diff --git a/.github/workflows/config.yml b/.github/workflows/config.yml
index 4e0c761..5da7373 100644
--- a/.github/workflows/config.yml
+++ b/.github/workflows/config.yml
@@ -163,8 +163,19 @@ jobs:
echo "pgpool failed to start"
exit 1
- - name: Run integration tests
- run: ./test/run.sh
+ - name: Run smoke test
+ run: ./test/run_smoke.sh
+ env:
+ DB_HOST: localhost
+ DB_PORT: 5432
+ DB_USER: pgtest
+ DB_PASSWORD: test123
+ DB_NAME: postgres
+ TARGET_HOST: localhost
+ TARGET_PORT: 5433
+
+ - name: Run concurrent test
+ run: ./test/run_concurrent.sh
env:
DB_HOST: localhost
DB_PORT: 5432
diff --git a/.gitignore b/.gitignore
index ce1c307..a173dd3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,6 @@
.vscode
pgpool
vendor
-test/vendor
\ No newline at end of file
+test/vendor
+test/*.out
+benchmark/results
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
index be3f7b2..ff76454 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,661 +1,21 @@
- GNU AFFERO GENERAL PUBLIC LICENSE
- Version 3, 19 November 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc.
- Everyone is permitted to copy and distribute verbatim copies
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-
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-
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-PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-
- 16. Limitation of Liability.
-
- IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGES.
-
- 17. Interpretation of Sections 15 and 16.
-
- If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
- END OF TERMS AND CONDITIONS
-
- How to Apply These Terms to Your New Programs
-
- If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
- To do so, attach the following notices to the program. It is safest
-to attach them to the start of each source file to most effectively
-state the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-
- Copyright (C)
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Affero General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see .
-
-Also add information on how to contact you by electronic and paper mail.
-
- If your software can interact with users remotely through a computer
-network, you should also make sure that it provides a way for users to
-get its source. For example, if your program is a web application, its
-interface could display a "Source" link that leads users to an archive
-of the code. There are many ways you could offer source, and different
-solutions will be better for different programs; see section 13 for the
-specific requirements.
-
- You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU AGPL, see
-.
+MIT License
+
+Copyright (c) 2025 pgpool contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index 9b697ad..b6efb73 100644
--- a/README.md
+++ b/README.md
@@ -15,16 +15,15 @@ A PostgreSQL connection pooler written in Go that acts as a proxy between client
- Trust (no password)
- **PostgreSQL Wire Protocol**: Full implementation supporting 40+ message types
- **Extended Query Support**: Parse, Bind, Execute, and Sync operations
-- **Prepared Statement Caching**: SHA256-based deduplication across connections
+- **Prepared Statement Caching**: Triggers prepare implicitly if server connection misses preprared on new pairing
- **Copy Command Support**: COPY FROM/COPY TO operations
-- **Concurrent Connection Handling**: Thread-safe with async client-server pairing
## Quick Start
### Prerequisites
-- Go 1.22.6 or later
-- PostgreSQL server (tested with PostgreSQL 15)
+- Go 1.25 or later
+- PostgreSQL server (tested with PostgreSQL 16)
### Installation
@@ -59,16 +58,27 @@ max_clients = 100
### Running
```bash
-# Run with default config (pgpool.conf)
+# Run with default config (config.ini)
./pgpool
# Run with custom config
-./pgpool -conf /path/to/config.conf
-
-# Run with debug logging
-./pgpool -debug
+./pgpool --config /path/to/config.ini
+# or shorthand
+./pgpool -c /path/to/config.ini
```
+### Command-Line Flags
+
+| Flag | Shorthand | Default | Description |
+|------|-----------|---------|-------------|
+| `--config` | `-c` | `./config.ini` | Path to configuration file |
+| `--log-level` | `-l` | `info` | Set log level: debug, info, warn, error |
+| `--verbose` | `-v` | `false` | Enable debug logging (equivalent to --log-level debug) |
+| `--quiet` | `-q` | `false` | Show errors only (equivalent to --log-level error) |
+
+**Environment Variables:**
+- `PGPOOL_LOG_LEVEL`: Set default log level (overridden by command-line flags)
+
## Configuration Reference
### Application Section
@@ -115,11 +125,6 @@ pgpool supports multiple authentication methods for securing client connections.
- Client → pgpool (validates client connections)
- pgpool → PostgreSQL server (authenticates with the database)
-**Security benefits:**
-- Passwords are never sent in plain text over the network
-- Resistant to replay attacks
-- More secure than MD5 or clear password authentication
-- Default authentication method in PostgreSQL 14+
### Trust
@@ -169,51 +174,20 @@ go build -race -v -o pgpool .
GOOS=linux GOARCH=amd64 go build -v -o pgpool-linux .
```
-## Architecture
-
-### Connection Flow
-
-1. **Client connects** to pgpool on configured address
-2. **Authentication** happens between client and pgpool
-3. **Pool assigns** a free server connection or creates a new one
-4. **Queries are proxied** between client and server
-5. **Connection returns** to pool when client disconnects
-
-### Thread Safety
+### Benchmark
-- `sync.RWMutex` for concurrent access to shared data structures
-- `sync.Map` for pool storage
-- Thread-safe `Deque` and `DList` implementations for connection queues
+Check [benchmark](benchmark/README.md)
-## Performance Considerations
+## TODO
-- **Connection Reuse**: Minimizes overhead of establishing PostgreSQL connections
-- **Prepared Statement Caching**: Reduces parse overhead using SHA256-based deduplication
-- **Async Connection Pairing**: Non-blocking queue-based matching of clients to servers
-- **Buffer Management**: Shared 4KB buffers with rewindable offsets for efficient reading
-
-## CI/CD
-
-GitHub Actions workflow runs on every push:
-
-1. Build check with Go 1.25.3
-2. Linting with golangci-lint
-3. Unit tests with coverage reporting
-4. Integration tests with PostgreSQL 15
-5. Coverage upload to Codecov
+* SSL support
+* Performance improvement:
+ granular locking on client/server list
+ active wait list processing
## License
-This project is licensed under the **GNU Affero General Public License v3.0** (AGPL-3.0).
-
-### What does this mean?
-
-- **Free and Open Source**: You can freely use, modify, and distribute this software
-- **Copyleft**: If you modify and distribute this software, you must release your modifications under the same license
-- **Network Use**: If you run a modified version of this software on a server and let others interact with it over a network, you must make your modified source code available to those users
-- **Strong Protection**: Ensures that all users, including those who interact with the software over a network, have access to the source code
-
-This license is particularly important for network services like pgpool, as it ensures that improvements and modifications made to the software remain available to the community, even when deployed as a service.
+This project is licensed under the **MIT License**.
See the [LICENSE](LICENSE) file for full details.
diff --git a/benchmark/README.md b/benchmark/README.md
new file mode 100644
index 0000000..9f85838
--- /dev/null
+++ b/benchmark/README.md
@@ -0,0 +1,209 @@
+# PostgreSQL Connection Pool Benchmark Suite
+
+Comprehensive benchmarking suite for comparing **pgpool** vs **pgbouncer** vs **direct PostgreSQL** connections using the industry-standard `pgbench` tool.
+
+## Overview
+
+This benchmark suite tests:
+- **Throughput** (transactions per second)
+- **Connection overhead** (initial connection time)
+- **Protocol performance** (simple, extended, prepared statements)
+- **Workload patterns** (read-only, read-write, complex queries)
+
+## Directory Structure
+
+```
+benchmark/
+├── config/ # Configuration files
+│ ├── pgpool.ini # pgpool configuration
+│ ├── pgbouncer.ini # pgbouncer configuration
+│ └── userlist.txt # pgbouncer auth file
+├── scripts/ # Benchmark scripts
+│ ├── setup.sh # Environment setup
+│ ├── run_benchmark.sh # Main benchmark runner
+│ ├── generate_report.sh # Report generator
+│ └── cleanup.sh # Cleanup script
+├── results/ # Benchmark results (auto-generated)
+│ └── YYYYMMDD_HHMMSS/ # Timestamped results
+└── README.md # This file
+└── report.md # sample report
+```
+
+## Prerequisites
+
+1. **PostgreSQL** (tested with PostgreSQL 15+)
+2. **pgbench** (included with PostgreSQL client tools)
+3. **pgpool** (built from this repository)
+4. **pgbouncer** (optional, for comparison)
+5. **Go 1.22+** (to build pgpool)
+
+### Installation
+
+#### macOS
+```bash
+brew install postgresql pgbouncer
+```
+
+#### Ubuntu/Debian
+```bash
+sudo apt-get install postgresql-client pgbouncer
+```
+
+## Quick Start
+
+### 1. Setup Environment
+
+```bash
+cd benchmark
+./scripts/setup.sh
+```
+
+This will:
+- Check PostgreSQL connectivity
+- Verify pgbench installation
+- Build pgpool binary if needed
+- Check pgbouncer availability
+
+### 2. Configure Poolers
+
+#### pgpool Configuration
+
+Edit `config/pgpool.ini`:
+```ini
+[app]
+addr = localhost:5433
+
+[db]
+id = 1
+name = postgres
+host = localhost:5432
+
+[user]
+dbid = 1
+name = pgtest
+auth_type = scram
+password = test123
+max_conn = 20
+max_clients = 200
+```
+
+#### pgbouncer Configuration
+
+Edit `config/pgbouncer.ini` and `config/userlist.txt` with your credentials.
+
+### 3. Start Poolers
+
+#### Start pgpool
+```bash
+# In terminal 1
+cd /path/to/pgpool
+./pgpool -conf benchmark/config/pgpool.ini -debug
+```
+
+#### Start pgbouncer (optional)
+```bash
+# In terminal 2
+cd benchmark/config
+pgbouncer -d pgbouncer.ini
+```
+
+### 4. Run Benchmarks
+
+```bash
+./scripts/run_benchmark.sh
+```
+
+### 5. Generate Report
+
+```bash
+./scripts/generate_report.sh results/YYYYMMDD_HHMMSS
+```
+
+This creates:
+- `report.md` - Markdown report with comparison tables
+- `results.csv` - Raw CSV data for further analysis
+
+## Configuration Options
+
+### Environment Variables
+
+The benchmark runner supports these environment variables:
+
+```bash
+# Database configuration
+export DB_HOST=localhost
+export DB_PORT=5432
+export DB_USER=pgtest
+export DB_PASSWORD=test123
+export DB_NAME=postgres
+
+# Pool ports
+export PGPOOL_PORT=5433
+export PGBOUNCER_PORT=6432
+
+# Benchmark configuration
+export DURATION=60 # seconds per test
+export SCALE_FACTOR=10 # pgbench scale factor
+export CONNECTION_COUNTS="10 50 100 200" # connection counts to test
+```
+
+
+## Workload Description
+
+The benchmark uses **pgbench's default TPC-B-like workload**, which is the industry-standard benchmark for PostgreSQL performance testing. This workload:
+
+- Simulates a banking/teller application with account updates and balance checks
+- Includes multiple tables: `pgbench_accounts`, `pgbench_branches`, `pgbench_tellers`, `pgbench_history`
+- Performs a mix of SELECT, UPDATE, and INSERT operations in each transaction
+- Provides consistent, reproducible results for comparing different connection pooling solutions
+
+The TPC-B workload is automatically initialized by pgbench with the specified scale factor, eliminating the need for custom migration scripts.
+
+## Understanding Results
+
+### Key Metrics
+
+1. **TPS (Transactions Per Second)** - Higher is better
+ - Measures throughput
+ - Shows maximum capacity
+
+2. **Average Latency** - Lower is better
+ - Mean response time
+ - Overall user experience
+
+3. **P95/P99 Latency** - Lower is better
+ - Tail latency
+ - Worst-case performance
+ - Critical for user experience
+
+4. **Connection Time** - Lower is better
+ - Overhead of establishing connections
+ - Important for connection churn scenarios
+
+### Sample Report Output
+
+see [report](report.md)
+
+## Cleanup
+
+```bash
+# Stop poolers and clean pgbench tables
+./scripts/cleanup.sh
+```
+
+## Advanced Usage
+
+### Testing Specific Scenarios
+
+#### Connection Churn
+Test how poolers handle frequent connect/disconnect:
+```bash
+# Use shorter duration with more connection counts
+DURATION=30 CONNECTION_COUNTS="5 10 20 50" ./scripts/run_benchmark.sh
+```
+
+#### High Concurrency
+Test behavior under extreme load:
+```bash
+CONNECTION_COUNTS="100 200 500 1000" DURATION=120 ./scripts/run_benchmark.sh
+```
diff --git a/benchmark/config/pgbouncer.ini b/benchmark/config/pgbouncer.ini
new file mode 100644
index 0000000..f7773d3
--- /dev/null
+++ b/benchmark/config/pgbouncer.ini
@@ -0,0 +1,27 @@
+[databases]
+postgres = host=127.0.0.1 port=5432 dbname=postgres
+
+[pgbouncer]
+listen_addr = 127.0.0.1
+listen_port = 6432
+auth_type = scram-sha-256
+auth_file = userlist.txt
+
+; Connection pooling
+pool_mode = transaction
+max_client_conn = 200
+default_pool_size = 20
+
+; Logging
+admin_users = pgtest
+stats_users = pgtest
+
+; Limits
+server_lifetime = 3600
+server_idle_timeout = 600
+query_timeout = 0
+
+; Logging
+log_connections = 0
+log_disconnections = 0
+log_pooler_errors = 1
diff --git a/benchmark/config/pgpool.ini b/benchmark/config/pgpool.ini
new file mode 100644
index 0000000..40b967e
--- /dev/null
+++ b/benchmark/config/pgpool.ini
@@ -0,0 +1,15 @@
+[app]
+addr = localhost:5433
+
+[db]
+id = 1
+name = postgres
+host = localhost:5432
+
+[user]
+dbid = 1
+name = pgtest
+auth_type = scram
+password = test123
+max_conn = 20
+max_clients = 200
\ No newline at end of file
diff --git a/benchmark/config/userlist.txt b/benchmark/config/userlist.txt
new file mode 100644
index 0000000..d28317f
--- /dev/null
+++ b/benchmark/config/userlist.txt
@@ -0,0 +1 @@
+"pgtest" "test123"
diff --git a/benchmark/report.md b/benchmark/report.md
new file mode 100644
index 0000000..957db1c
--- /dev/null
+++ b/benchmark/report.md
@@ -0,0 +1,106 @@
+# PostgreSQL Connection Pool Benchmark Report
+
+## System Info
+```
+Operating System
+ - Distribution: Ubuntu 24.04.2 LTS (Noble Numbat)
+ - Kernel: Linux 6.14.0-33-generic
+ - Architecture: x86_64 (64-bit)
+
+CPU
+ - Model: Intel(R) Core(TM) i7-3615QM @ 2.30GHz
+ - Cores: 4 physical cores, 8 threads (hyperthreading enabled)
+ - Cache: L1d: 128 KiB, L1i: 128 KiB, L2: 1 MiB, L3: 6 MiB
+ - Virtualization: VT-x supported
+
+Memory
+ - Total RAM: 7.7 GiB
+ - Used: 3.6 GiB
+ - Free: 212 MiB
+ - Buffer/Cache: 4.4 GiB
+ - Available: 4.1 GiB
+```
+
+## Configuration
+```
+Benchmark Configuration
+=======================
+Timestamp: 20251119_123527
+Duration: 30s
+Scale Factor: 1
+Connection Counts: 10 30 50
+Workload: TPC-B-like (pgbench default)
+
+Database Configuration
+======================
+DB Host: localhost
+DB Port: 5432
+DB Name: postgres
+DB User: pgtest
+
+Pool Configuration
+==========
+pgpool: localhost 5433
+pgbouncer: localhost 6432
+```
+
+## Workload: tpcb
+
+### Protocol: extended
+
+#### Throughput (TPS - Higher is Better)
+
+| Connections | direct | pgpool | pgbouncer |
+|-------------|-----------|-----------|-----------|
+| 10 | 585.238364 | 586.118595 | 604.660117 |
+| 30 | 582.777928 | 532.676985 | 714.917133 |
+| 50 | 589.293650 | 398.812499 | 783.499747 |
+
+#### Average Latency (ms - Lower is Better)
+
+| Connections | direct | pgpool | pgbouncer |
+|-------------|-----------|-----------|-----------|
+| 10 | 17.087 | 17.061 | 16.538 |
+| 30 | 51.478 | 56.319 | 41.963 |
+| 50 | 84.847 | 125.372 | 63.816 |
+
+
+### Protocol: prepared
+
+#### Throughput (TPS - Higher is Better)
+
+| Connections | direct | pgpool | pgbouncer |
+|-------------|-----------|-----------|-----------|
+| 10 | 657.164027 | 693.167688 | 700.220246 |
+| 30 | 638.176354 | 616.605597 | 818.683994 |
+| 50 | 648.179381 | 590.052991 | 841.249706 |
+
+#### Average Latency (ms - Lower is Better)
+
+| Connections | direct | pgpool | pgbouncer |
+|-------------|-----------|-----------|-----------|
+| 10 | 15.217 | 14.427 | 14.281 |
+| 30 | 47.009 | 48.653 | 36.644 |
+| 50 | 77.139 | 84.738 | 59.435 |
+
+---
+
+### Protocol: simple
+
+#### Throughput (TPS - Higher is Better)
+
+| Connections | direct | pgpool | pgbouncer |
+|-------------|-----------|-----------|-----------|
+| 10 | 619.224861 | 753.693232 | 663.680040 |
+| 30 | 608.975762 | 828.391829 | 746.985918 |
+| 50 | 613.787577 | 802.184268 | 749.947154 |
+
+#### Average Latency (ms - Lower is Better)
+
+| Connections | direct | pgpool | pgbouncer |
+|-------------|-----------|-----------|-----------|
+| 10 | 16.149 | 13.268 | 15.068 |
+| 30 | 49.263 | 36.215 | 40.161 |
+| 50 | 81.461 | 62.330 | 66.671 |
+
+---
diff --git a/benchmark/scripts/cleanup.sh b/benchmark/scripts/cleanup.sh
new file mode 100755
index 0000000..06bb2b0
--- /dev/null
+++ b/benchmark/scripts/cleanup.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+
+# Cleanup script for benchmark environment
+# Removes test data and stops poolers
+
+set -e
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+# Get script directory
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+BENCHMARK_DIR="$(dirname "$SCRIPT_DIR")"
+PROJECT_ROOT="$(dirname "$BENCHMARK_DIR")"
+
+echo -e "${BLUE}=== Benchmark Cleanup ===${NC}\n"
+
+# Database configuration
+DB_HOST="${DB_HOST:-localhost}"
+DB_PORT="${DB_PORT:-5432}"
+DB_USER="${DB_USER:-pgtest}"
+DB_PASSWORD="${DB_PASSWORD:-test123}"
+DB_NAME="${DB_NAME:-postgres}"
+
+# Stop pgpool if running
+echo -e "${YELLOW}Stopping pgpool...${NC}"
+pkill -f "pgpool.*${BENCHMARK_DIR}" || echo -e "${YELLOW}pgpool not running${NC}"
+
+# Stop pgbouncer if running
+echo -e "${YELLOW}Stopping pgbouncer...${NC}"
+pkill -f "pgbouncer.*${BENCHMARK_DIR}" || echo -e "${YELLOW}pgbouncer not running${NC}"
+
+# Clean up pgbench tables
+echo -e "\n${YELLOW}Cleaning up pgbench tables...${NC}"
+if PGPASSWORD="${DB_PASSWORD}" psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${DB_USER}" -d "${DB_NAME}" \
+ -c "DROP TABLE IF EXISTS pgbench_accounts, pgbench_branches, pgbench_history, pgbench_tellers CASCADE;" > /dev/null 2>&1; then
+ echo -e "${GREEN}✓ pgbench tables dropped${NC}"
+else
+ echo -e "${YELLOW}⚠ Could not drop pgbench tables${NC}"
+fi
+
+echo -e "\n${GREEN}=== Cleanup Complete ===${NC}"
diff --git a/benchmark/scripts/generate_report.sh b/benchmark/scripts/generate_report.sh
new file mode 100755
index 0000000..87db921
--- /dev/null
+++ b/benchmark/scripts/generate_report.sh
@@ -0,0 +1,222 @@
+#!/bin/bash
+
+# Report generator for benchmark results
+# Parses pgbench output and creates comparison tables
+
+set -e
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+if [ $# -lt 1 ]; then
+ echo "Usage: $0 "
+ exit 1
+fi
+
+RESULTS_DIR="$1"
+
+if [ ! -d "${RESULTS_DIR}" ]; then
+ echo -e "${RED}Results directory not found: ${RESULTS_DIR}${NC}"
+ exit 1
+fi
+
+REPORT_FILE="${RESULTS_DIR}/report.md"
+CSV_FILE="${RESULTS_DIR}/results.csv"
+
+echo -e "${BLUE}=== Generating Benchmark Report ===${NC}\n"
+echo -e "Results directory: ${RESULTS_DIR}"
+echo -e "Report file: ${REPORT_FILE}\n"
+
+# Function to parse pgbench output file
+parse_pgbench_output() {
+ local file=$1
+
+ if [ ! -f "${file}" ]; then
+ echo "NA,NA,NA,NA,NA"
+ return
+ fi
+
+ # Extract metrics
+ local tps=$(grep "^tps = " "${file}" | awk '{print $3}' | sed 's/[^0-9.]//g')
+ local latency_avg=$(grep "^latency average = " "${file}" | awk '{print $4}' | sed 's/[^0-9.]//g')
+ local latency_stddev=$(grep "^latency stddev = " "${file}" | awk '{print $4}' | sed 's/[^0-9.]//g')
+ local initial_conn=$(grep "^initial connection time = " "${file}" | awk '{print $5}' | sed 's/[^0-9.]//g')
+
+ # Try to get percentiles
+ local p50=$(grep "50.000" "${file}" | tail -1 | awk '{print $NF}' | sed 's/[^0-9.]//g')
+ local p95=$(grep "95.000" "${file}" | tail -1 | awk '{print $NF}' | sed 's/[^0-9.]//g')
+ local p99=$(grep "99.000" "${file}" | tail -1 | awk '{print $NF}' | sed 's/[^0-9.]//g')
+
+ # Default values if not found
+ tps=${tps:-NA}
+ latency_avg=${latency_avg:-NA}
+ latency_stddev=${latency_stddev:-NA}
+ p50=${p50:-NA}
+ p95=${p95:-NA}
+ p99=${p99:-NA}
+ initial_conn=${initial_conn:-NA}
+
+ echo "${tps},${latency_avg},${latency_stddev},${p50},${p95},${p99},${initial_conn}"
+}
+
+# Start markdown report
+cat > "${REPORT_FILE}" << 'EOF'
+# PostgreSQL Connection Pool Benchmark Report
+
+EOF
+
+# Add configuration info
+if [ -f "${RESULTS_DIR}/config.txt" ]; then
+ echo '## Configuration' >> "${REPORT_FILE}"
+ echo '```' >> "${REPORT_FILE}"
+ cat "${RESULTS_DIR}/config.txt" >> "${REPORT_FILE}"
+ echo '```' >> "${REPORT_FILE}"
+ echo '' >> "${REPORT_FILE}"
+fi
+
+# Start CSV file
+echo "Target,Workload,Connections,Protocol,TPS,Latency_Avg_ms,Latency_Stddev_ms,P50_ms,P95_ms,P99_ms,Initial_Conn_ms" > "${CSV_FILE}"
+
+# Detect available targets
+TARGETS=""
+[ -d "${RESULTS_DIR}/direct" ] && TARGETS="${TARGETS} direct"
+[ -d "${RESULTS_DIR}/pgpool" ] && TARGETS="${TARGETS} pgpool"
+[ -d "${RESULTS_DIR}/pgbouncer" ] && TARGETS="${TARGETS} pgbouncer"
+
+# Detect workloads and connection counts from files
+WORKLOADS=$(find "${RESULTS_DIR}" -name "*.log" -exec basename {} \; | cut -d_ -f1 | sort -u)
+CONNECTIONS=$(find "${RESULTS_DIR}" -name "*.log" -exec basename {} \; | sed 's/.*_c\([0-9]*\)_.*/\1/' | sort -nu)
+PROTOCOLS=$(find "${RESULTS_DIR}" -name "*.log" -exec basename {} \; | sed 's/.*_\([^_]*\)\.log/\1/' | sort -u)
+
+echo -e "${YELLOW}Found targets: ${TARGETS}${NC}"
+echo -e "${YELLOW}Found workloads: ${WORKLOADS}${NC}"
+echo -e "${YELLOW}Found connection counts: ${CONNECTIONS}${NC}"
+echo -e "${YELLOW}Found protocols: ${PROTOCOLS}${NC}"
+echo ""
+
+# Generate report for each workload
+for workload in ${WORKLOADS}; do
+ echo "## Workload: ${workload}" >> "${REPORT_FILE}"
+ echo "" >> "${REPORT_FILE}"
+
+ for protocol in ${PROTOCOLS}; do
+ echo "### Protocol: ${protocol}" >> "${REPORT_FILE}"
+ echo "" >> "${REPORT_FILE}"
+
+ # TPS comparison table
+ echo "#### Throughput (TPS - Higher is Better)" >> "${REPORT_FILE}"
+ echo "" >> "${REPORT_FILE}"
+ echo "| Connections | $(echo ${TARGETS} | sed 's/ / | /g') |" >> "${REPORT_FILE}"
+ echo "|-------------|$(echo ${TARGETS} | sed 's/[^ ]*/-----------/g' | sed 's/ /|/g')|" >> "${REPORT_FILE}"
+
+ for conn in ${CONNECTIONS}; do
+ row="| ${conn} "
+ for target in ${TARGETS}; do
+ file="${RESULTS_DIR}/${target}/${workload}_c${conn}_${protocol}.log"
+ metrics=$(parse_pgbench_output "${file}")
+ tps=$(echo ${metrics} | cut -d, -f1)
+
+ # Add to CSV
+ echo "${target},${workload},${conn},${protocol},${metrics}" >> "${CSV_FILE}"
+
+ row="${row}| ${tps} "
+ done
+ echo "${row}|" >> "${REPORT_FILE}"
+ done
+ echo "" >> "${REPORT_FILE}"
+
+ # Latency comparison table
+ echo "#### Average Latency (ms - Lower is Better)" >> "${REPORT_FILE}"
+ echo "" >> "${REPORT_FILE}"
+ echo "| Connections | $(echo ${TARGETS} | sed 's/ / | /g') |" >> "${REPORT_FILE}"
+ echo "|-------------|$(echo ${TARGETS} | sed 's/[^ ]*/-----------/g' | sed 's/ /|/g')|" >> "${REPORT_FILE}"
+
+ for conn in ${CONNECTIONS}; do
+ row="| ${conn} "
+ for target in ${TARGETS}; do
+ file="${RESULTS_DIR}/${target}/${workload}_c${conn}_${protocol}.log"
+ metrics=$(parse_pgbench_output "${file}")
+ latency=$(echo ${metrics} | cut -d, -f2)
+ row="${row}| ${latency} "
+ done
+ echo "${row}|" >> "${REPORT_FILE}"
+ done
+ echo "" >> "${REPORT_FILE}"
+
+ # P95 latency comparison table
+ echo "#### P95 Latency (ms - Lower is Better)" >> "${REPORT_FILE}"
+ echo "" >> "${REPORT_FILE}"
+ echo "| Connections | $(echo ${TARGETS} | sed 's/ / | /g') |" >> "${REPORT_FILE}"
+ echo "|-------------|$(echo ${TARGETS} | sed 's/[^ ]*/-----------/g' | sed 's/ /|/g')|" >> "${REPORT_FILE}"
+
+ for conn in ${CONNECTIONS}; do
+ row="| ${conn} "
+ for target in ${TARGETS}; do
+ file="${RESULTS_DIR}/${target}/${workload}_c${conn}_${protocol}.log"
+ metrics=$(parse_pgbench_output "${file}")
+ p95=$(echo ${metrics} | cut -d, -f5)
+ row="${row}| ${p95} "
+ done
+ echo "${row}|" >> "${REPORT_FILE}"
+ done
+ echo "" >> "${REPORT_FILE}"
+ echo "---" >> "${REPORT_FILE}"
+ echo "" >> "${REPORT_FILE}"
+ done
+done
+
+# Add summary section
+echo "## Summary" >> "${REPORT_FILE}"
+echo "" >> "${REPORT_FILE}"
+echo "### Winner by Category" >> "${REPORT_FILE}"
+echo "" >> "${REPORT_FILE}"
+
+# Analyze CSV to find winners
+echo "Analyzing results to find best performers..." >> "${REPORT_FILE}"
+echo "" >> "${REPORT_FILE}"
+
+# Best overall TPS
+best_tps=$(tail -n +2 "${CSV_FILE}" | sort -t, -k5 -rn | head -1)
+if [ -n "${best_tps}" ]; then
+ target=$(echo ${best_tps} | cut -d, -f1)
+ workload=$(echo ${best_tps} | cut -d, -f2)
+ conns=$(echo ${best_tps} | cut -d, -f3)
+ tps=$(echo ${best_tps} | cut -d, -f5)
+ echo "- **Highest TPS**: ${target} (${tps} TPS with ${workload} workload, ${conns} connections)" >> "${REPORT_FILE}"
+fi
+
+# Best average latency
+best_latency=$(tail -n +2 "${CSV_FILE}" | awk -F, '$6 != "NA" {print $0}' | sort -t, -k6 -n | head -1)
+if [ -n "${best_latency}" ]; then
+ target=$(echo ${best_latency} | cut -d, -f1)
+ workload=$(echo ${best_latency} | cut -d, -f2)
+ conns=$(echo ${best_latency} | cut -d, -f3)
+ latency=$(echo ${best_latency} | cut -d, -f6)
+ echo "- **Lowest Average Latency**: ${target} (${latency} ms with ${workload} workload, ${conns} connections)" >> "${REPORT_FILE}"
+fi
+
+# Best P95 latency
+best_p95=$(tail -n +2 "${CSV_FILE}" | awk -F, '$9 != "NA" {print $0}' | sort -t, -k9 -n | head -1)
+if [ -n "${best_p95}" ]; then
+ target=$(echo ${best_p95} | cut -d, -f1)
+ workload=$(echo ${best_p95} | cut -d, -f2)
+ conns=$(echo ${best_p95} | cut -d, -f3)
+ p95=$(echo ${best_p95} | cut -d, -f9)
+ echo "- **Lowest P95 Latency**: ${target} (${p95} ms with ${workload} workload, ${conns} connections)" >> "${REPORT_FILE}"
+fi
+
+echo "" >> "${REPORT_FILE}"
+echo "### Raw Data" >> "${REPORT_FILE}"
+echo "" >> "${REPORT_FILE}"
+echo "Complete results available in: \`results.csv\`" >> "${REPORT_FILE}"
+
+echo -e "${GREEN}=== Report Generated ===${NC}\n"
+echo -e "Markdown report: ${REPORT_FILE}"
+echo -e "CSV data: ${CSV_FILE}"
+echo -e "\nView report with:"
+echo -e " cat ${REPORT_FILE}"
+echo -e " open ${REPORT_FILE} # macOS"
diff --git a/benchmark/scripts/run_benchmark.sh b/benchmark/scripts/run_benchmark.sh
new file mode 100755
index 0000000..efee8e7
--- /dev/null
+++ b/benchmark/scripts/run_benchmark.sh
@@ -0,0 +1,205 @@
+#!/bin/bash
+
+# PostgreSQL Connection Pool Benchmark Runner
+# Compares pgpool vs pgbouncer vs direct connection using pgbench
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+# Get script directory
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+BENCHMARK_DIR="$(dirname "$SCRIPT_DIR")"
+PROJECT_ROOT="$(dirname "$BENCHMARK_DIR")"
+
+# Default configuration
+DB_HOST="${DB_HOST:-localhost}"
+DB_PORT="${DB_PORT:-5432}"
+DB_USER="${DB_USER:-pgtest}"
+DB_PASSWORD="${DB_PASSWORD:-test123}"
+DB_NAME="${DB_NAME:-postgres}"
+
+PGPOOL_HOST="${PGPOOL_HOST:-localhost}"
+PGPOOL_PORT="${PGPOOL_PORT:-5433}"
+PGBOUNCER_HOST="${PGBOUNCER_HOST:-localhost}"
+PGBOUNCER_PORT="${PGBOUNCER_PORT:-6432}"
+
+# Benchmark configuration
+DURATION="${DURATION:-30}"
+SCALE_FACTOR="${SCALE_FACTOR:-1}"
+CONNECTION_COUNTS="${CONNECTION_COUNTS:-10 50 100}"
+PROTOCOLS=("simple" "extended" "prepared")
+
+# Results directory
+RESULTS_DIR="${BENCHMARK_DIR}/results"
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+RUN_DIR="${RESULTS_DIR}/${TIMESTAMP}"
+
+echo -e "${BLUE}=== PostgreSQL Connection Pool Benchmark ===${NC}\n"
+
+# Create results directories
+mkdir -p "${RUN_DIR}/pgpool"
+mkdir -p "${RUN_DIR}/pgbouncer"
+mkdir -p "${RUN_DIR}/direct"
+mkdir -p "${RUN_DIR}/logs"
+
+# Save configuration
+cat > "${RUN_DIR}/config.txt" << EOF
+Benchmark Configuration
+=======================
+Timestamp: ${TIMESTAMP}
+Duration: ${DURATION}s
+Scale Factor: ${SCALE_FACTOR}
+Connection Counts: ${CONNECTION_COUNTS}
+Workload: TPC-B-like (pgbench default)
+
+Database Configuration
+======================
+DB Host: ${DB_HOST}
+DB Port: ${DB_PORT}
+DB Name: ${DB_NAME}
+DB User: ${DB_USER}
+
+Pool Configuration
+==========
+pgpool: ${PGPOOL_HOST} ${PGPOOL_PORT}
+pgbouncer: ${PGBOUNCER_HOST} ${PGBOUNCER_PORT}
+EOF
+
+echo -e "${GREEN}Results directory: ${RUN_DIR}${NC}\n"
+
+# Function to run pgbench test
+run_pgbench() {
+ local target=$1
+ local host=$2
+ local port=$3
+ local connections=$4
+ local protocol=$5 # simple, extended, or prepared
+
+ local output_file="${RUN_DIR}/${target}/tpcb_c${connections}_${protocol}.log"
+ local test_name="${target} - TPC-B - c${connections} - ${protocol}"
+
+ echo -e "${YELLOW}Running: ${test_name}${NC}"
+
+ # Build pgbench command
+ local pgbench_cmd="PGPASSWORD=${DB_PASSWORD} pgbench"
+ pgbench_cmd+=" -h ${host}"
+ pgbench_cmd+=" -p ${port}"
+ pgbench_cmd+=" -U ${DB_USER}"
+ pgbench_cmd+=" -c ${connections}"
+ # have to ensure thread match connection, otherwise prepared query will stuck with pooling
+ pgbench_cmd+=" -j ${connections}"
+ pgbench_cmd+=" -T ${DURATION}"
+ pgbench_cmd+=" -M ${protocol}"
+ # pgbench_cmd+=" -d" # debug
+
+ # Set workload (default: TPC-B-like)
+ pgbench_cmd+=" -b tpcb-like"
+
+ pgbench_cmd+=" ${DB_NAME}"
+
+ # Run pgbench
+ eval "${pgbench_cmd}" > "${output_file}" 2>&1
+
+ if [ $? -eq 0 ]; then
+ # Extract key metrics
+ local tps=$(grep "^tps = " "${output_file}" | awk '{print $3}')
+ local latency_avg=$(grep "^latency average = " "${output_file}" | awk '{print $4}')
+ echo -e "${GREEN}✓ Complete - TPS: ${tps}, Avg Latency: ${latency_avg}ms${NC}"
+ return 0
+ else
+ echo -e "${RED}✗ Failed - check ${output_file}${NC}"
+ return 1
+ fi
+}
+
+# Function to check if a service is accessible
+check_service() {
+ local name=$1
+ local host=$2
+ local port=$3
+
+ echo -e "${YELLOW}Checking ${name} connection...${NC}"
+ if PGPASSWORD="${DB_PASSWORD}" psql -h "${host}" -p "${port}" -U "${DB_USER}" -d "${DB_NAME}" -c "SELECT 1" > /dev/null 2>&1; then
+ echo -e "${GREEN}✓ ${name} is accessible on ${host}:${port}${NC}"
+ return 0
+ else
+ echo -e "${RED}✗ ${name} is not accessible on ${host}:${port}${NC}"
+ return 1
+ fi
+}
+
+# Check all services
+echo -e "${BLUE}=== Checking Services ===${NC}\n"
+check_service "PostgreSQL (direct)" "${DB_HOST}" "${DB_PORT}"
+DIRECT_AVAILABLE=$?
+
+check_service "pgpool" "${PGPOOL_HOST}" "${PGPOOL_PORT}"
+PGPOOL_AVAILABLE=$?
+
+check_service "pgbouncer" "${PGBOUNCER_HOST}" "${PGBOUNCER_PORT}"
+PGBOUNCER_AVAILABLE=$?
+
+echo ""
+
+if [ $DIRECT_AVAILABLE -ne 0 ]; then
+ echo -e "${RED}PostgreSQL is not accessible. Cannot proceed.${NC}"
+ exit 1
+fi
+
+# Determine which targets to test
+TARGETS=()
+[ $DIRECT_AVAILABLE -eq 0 ] && TARGETS+=("direct:${DB_HOST}:${DB_PORT}")
+[ $PGPOOL_AVAILABLE -eq 0 ] && TARGETS+=("pgpool:${PGPOOL_HOST}:${PGPOOL_PORT}")
+[ $PGBOUNCER_AVAILABLE -eq 0 ] && TARGETS+=("pgbouncer:${PGBOUNCER_HOST}:${PGBOUNCER_PORT}")
+
+echo -e "${BLUE}=== Initializing pgbench tables ===${NC}\n"
+PGPASSWORD="${DB_PASSWORD}" pgbench -h "${DB_HOST}" -p "${DB_PORT}" -U "${DB_USER}" -i -s "${SCALE_FACTOR}" "${DB_NAME}"
+echo ""
+
+# Run benchmarks
+echo -e "${BLUE}=== Running Benchmarks ===${NC}\n"
+
+TOTAL_TESTS=0
+COMPLETED_TESTS=0
+
+# Count total tests
+for target_info in "${TARGETS[@]}"; do
+ for connections in ${CONNECTION_COUNTS}; do
+ for protocol in "${PROTOCOLS[@]}"; do
+ TOTAL_TESTS=$((TOTAL_TESTS + 1))
+ done
+ done
+done
+
+echo -e "Total tests to run: ${TOTAL_TESTS}\n"
+
+# Run all test combinations
+for target_info in "${TARGETS[@]}"; do
+ target=$(echo ${target_info} | cut -d: -f1)
+ host=$(echo ${target_info} | cut -d: -f2)
+ port=$(echo ${target_info} | cut -d: -f3)
+
+ echo -e "${BLUE}=== Testing: ${target} ===${NC}\n"
+
+ for connections in ${CONNECTION_COUNTS}; do
+ for protocol in "${PROTOCOLS[@]}"; do
+ COMPLETED_TESTS=$((COMPLETED_TESTS + 1))
+ echo -e "${BLUE}[${COMPLETED_TESTS}/${TOTAL_TESTS}]${NC}"
+
+ run_pgbench "${target}" "${host}" "${port}" "${connections}" "${protocol}"
+
+ # Brief pause between tests
+ sleep 2
+ echo ""
+ done
+ done
+done
+
+echo -e "${GREEN}=== Benchmark Complete ===${NC}\n"
+echo -e "Results saved to: ${RUN_DIR}"
+echo -e "\nTo generate comparison report, run:"
+echo -e " ${SCRIPT_DIR}/generate_report.sh ${RUN_DIR}"
diff --git a/benchmark/scripts/setup.sh b/benchmark/scripts/setup.sh
new file mode 100755
index 0000000..dc1aae9
--- /dev/null
+++ b/benchmark/scripts/setup.sh
@@ -0,0 +1,100 @@
+#!/bin/bash
+
+# Setup script for benchmark environment
+# This script helps set up pgpool and pgbouncer for benchmarking
+
+set -e
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+# Get script directory
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+BENCHMARK_DIR="$(dirname "$SCRIPT_DIR")"
+PROJECT_ROOT="$(dirname "$BENCHMARK_DIR")"
+
+echo -e "${BLUE}=== Benchmark Environment Setup ===${NC}\n"
+
+# Check PostgreSQL connection
+echo -e "${YELLOW}1. Checking PostgreSQL connection...${NC}"
+DB_HOST="${DB_HOST:-localhost}"
+DB_PORT="${DB_PORT:-5432}"
+DB_USER="${DB_USER:-pgtest}"
+DB_PASSWORD="${DB_PASSWORD:-test123}"
+DB_NAME="${DB_NAME:-postgres}"
+
+if PGPASSWORD="${DB_PASSWORD}" psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${DB_USER}" -d "${DB_NAME}" -c "SELECT version();" > /dev/null 2>&1; then
+ PG_VERSION=$(PGPASSWORD="${DB_PASSWORD}" psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${DB_USER}" -d "${DB_NAME}" -t -c "SELECT version();" | head -1)
+ echo -e "${GREEN}✓ PostgreSQL is accessible${NC}"
+ echo -e " ${PG_VERSION}"
+else
+ echo -e "${RED}✗ Cannot connect to PostgreSQL${NC}"
+ echo -e " Please ensure PostgreSQL is running and credentials are correct:"
+ echo -e " Host: ${DB_HOST}:${DB_PORT}"
+ echo -e " User: ${DB_USER}"
+ echo -e " Database: ${DB_NAME}"
+ exit 1
+fi
+
+# Check if pgbench is installed
+echo -e "\n${YELLOW}2. Checking pgbench installation...${NC}"
+if command -v pgbench &> /dev/null; then
+ PGBENCH_VERSION=$(pgbench --version)
+ echo -e "${GREEN}✓ pgbench is installed${NC}"
+ echo -e " ${PGBENCH_VERSION}"
+else
+ echo -e "${RED}✗ pgbench is not installed${NC}"
+ echo -e " Install it with: brew install postgresql (macOS) or apt-get install postgresql-client (Linux)"
+ exit 1
+fi
+
+# Check if pgpool binary exists
+echo -e "\n${YELLOW}3. Checking pgpool...${NC}"
+PGPOOL_BIN="${PROJECT_ROOT}/pgpool"
+if [ -f "${PGPOOL_BIN}" ]; then
+ echo -e "${GREEN}✓ pgpool binary found${NC}"
+else
+ echo -e "${YELLOW}⚠ pgpool binary not found${NC}"
+ echo -e " Building pgpool..."
+ cd "${PROJECT_ROOT}"
+ go build -o pgpool .
+ if [ -f "${PGPOOL_BIN}" ]; then
+ echo -e "${GREEN}✓ pgpool built successfully${NC}"
+ else
+ echo -e "${RED}✗ Failed to build pgpool${NC}"
+ exit 1
+ fi
+fi
+
+# Check if pgbouncer is installed
+echo -e "\n${YELLOW}4. Checking pgbouncer...${NC}"
+if command -v pgbouncer &> /dev/null; then
+ PGBOUNCER_VERSION=$(pgbouncer --version 2>&1 | head -1)
+ echo -e "${GREEN}✓ pgbouncer is installed${NC}"
+ echo -e " ${PGBOUNCER_VERSION}"
+
+ # Setup pgbouncer auth file with proper SCRAM hash
+ echo -e "\n${YELLOW}5. Setting up pgbouncer authentication...${NC}"
+ echo -e "${YELLOW}Note: You need to manually update the userlist.txt file with the correct SCRAM hash${NC}"
+ echo -e "To generate SCRAM hash, connect to PostgreSQL and run:"
+ echo -e " SELECT rolpassword FROM pg_authid WHERE rolname = '${DB_USER}';"
+ echo -e "Then update: ${BENCHMARK_DIR}/config/userlist.txt"
+else
+ echo -e "${YELLOW}⚠ pgbouncer is not installed${NC}"
+ echo -e " Install it with: brew install pgbouncer (macOS) or apt-get install pgbouncer (Linux)"
+ echo -e " pgbouncer is optional but recommended for comparison"
+fi
+
+echo -e "\n${GREEN}=== Setup Complete ===${NC}\n"
+echo -e "Configuration files:"
+echo -e " pgpool: ${BENCHMARK_DIR}/config/pgpool.ini"
+echo -e " pgbouncer: ${BENCHMARK_DIR}/config/pgbouncer.ini"
+echo -e "\nTo start the poolers:"
+echo -e " pgpool: ${PGPOOL_BIN} -conf ${BENCHMARK_DIR}/config/pgpool.ini"
+echo -e " pgbouncer: pgbouncer -d ${BENCHMARK_DIR}/config/pgbouncer.ini"
+echo -e "\nTo run benchmarks:"
+echo -e " ${SCRIPT_DIR}/run_benchmark.sh"
diff --git a/pgpool.conf b/config.ini
similarity index 100%
rename from pgpool.conf
rename to config.ini
diff --git a/main.go b/main.go
index 5030806..116ef48 100644
--- a/main.go
+++ b/main.go
@@ -2,24 +2,69 @@ package main
import (
"flag"
+ "fmt"
"log/slog"
"net"
"os"
"os/signal"
+ "strings"
"syscall"
"github.com/everdance/pgpool/pool"
)
+func parseLogLevel(level string) (slog.Level, error) {
+ switch strings.ToLower(level) {
+ case "debug":
+ return slog.LevelDebug, nil
+ case "info":
+ return slog.LevelInfo, nil
+ case "warn", "warning":
+ return slog.LevelWarn, nil
+ case "error":
+ return slog.LevelError, nil
+ default:
+ return slog.LevelInfo, fmt.Errorf("unknown log level: %s (valid: debug, info, warn, error)", level)
+ }
+}
+
func main() {
- debug := flag.Bool("debug", false, "enable debug level logging")
+ var logLevel string
var cfgSrc string
- flag.StringVar(&cfgSrc, "conf", "./pgpool.conf", "config file")
+ var verbose bool
+ var quiet bool
+
+ // Get default log level from environment variable
+ defaultLogLevel := os.Getenv("PGPOOL_LOG_LEVEL")
+ if defaultLogLevel == "" {
+ defaultLogLevel = "info"
+ }
+
+ // Define flags with both long and short forms
+ flag.StringVar(&logLevel, "log-level", defaultLogLevel, "set log level (debug, info, warn, error)")
+ flag.StringVar(&logLevel, "l", defaultLogLevel, "set log level (shorthand for --log-level)")
+ flag.BoolVar(&verbose, "verbose", false, "enable debug logging")
+ flag.BoolVar(&verbose, "v", false, "enable debug logging (shorthand)")
+ flag.BoolVar(&quiet, "quiet", false, "show errors only")
+ flag.BoolVar(&quiet, "q", false, "show errors only (shorthand)")
+ flag.StringVar(&cfgSrc, "config", "./config.ini", "config file path")
+ flag.StringVar(&cfgSrc, "c", "./config.ini", "config file path (shorthand for --config)")
flag.Parse()
- if *debug {
- slog.SetLogLoggerLevel(slog.LevelDebug)
+ // Override log level if verbose or quiet flags are set
+ if verbose {
+ logLevel = "debug"
+ } else if quiet {
+ logLevel = "error"
+ }
+
+ // Set log level
+ level, err := parseLogLevel(logLevel)
+ if err != nil {
+ fmt.Fprintf(os.Stderr, "Invalid log level: %v\n", err)
+ os.Exit(1)
}
+ slog.SetLogLoggerLevel(level)
args := flag.Args()
if len(args) > 0 {
@@ -62,5 +107,4 @@ func main() {
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
<-c
- // pools.Close()
}
diff --git a/pool/client.go b/pool/client.go
index 63c9029..9478144 100644
--- a/pool/client.go
+++ b/pool/client.go
@@ -30,6 +30,7 @@ const (
ServerConnection WaitType = iota
ServerParse
ServerSyncReady
+ ServerSyncInTx
ServerCopyResp
)
@@ -39,12 +40,17 @@ func hashStmt(sql string) string {
}
type Stmt struct {
+ Unnamed bool
Hash string
Sql string
ParamOIDs []uint32
}
func (s Stmt) Name() string {
+ if s.Unnamed {
+ return ""
+ }
+
return "stmt_" + s.Hash
}
@@ -82,7 +88,7 @@ func (client *ClientConn) ID() string {
}
func (client *ClientConn) Write(msg proto.Message) error {
- slog.Debug("send message", "client", client.ID(), "msg", fmt.Sprintf("%#v", msg))
+ slog.Debug("send message", "client", client.ID(), "msg", msg.Type().String())
if _, err := client.Conn.Write(msg.Encode()); err != nil {
slog.Error("client write", "error", err)
@@ -117,7 +123,7 @@ func (pls *Pools) NewClient(conn *net.TCPConn) {
break
}
- slog.Debug("client:", "addr", client.ID(), "message", fmt.Sprintf("%#v", msg))
+ slog.Debug("client:", "addr", client.ID(), "message", msg.Type().String)
switch msg.Type() {
case proto.StartupMsg:
@@ -236,7 +242,7 @@ func (p *Pool) authPassword(client *ClientConn) error {
}
}
- slog.Debug("client auth:", "addr", client.ID(), "message", fmt.Sprintf("%#v", msg))
+ slog.Debug("client auth:", "addr", client.ID(), "message", msg.Type().String())
switch msg.Type() {
case proto.PasswordMsg:
@@ -377,8 +383,9 @@ func (p *Pool) handleClient(client *ClientConn) {
if client.Server == nil {
p.wait(client)
}
+ m := msg.(*proto.ParseMsg)
client.Server.State = ServerInUse
- client.doParse(msg.(*proto.ParseMsg))
+ client.doParse(m)
continue
// BIND can be sent as first message for new extended query
@@ -389,10 +396,10 @@ func (p *Pool) handleClient(client *ClientConn) {
client.Server.State = ServerInUse
client.doBind(msg.(*proto.BindMsg))
continue
-
- // last client message to sync with server ready for query
case proto.Sync, proto.CopyFail, proto.CopyDone:
- client.State = ClientSyncWait
+ if p.WaitLst.Len() > 0 {
+ client.State = ClientSyncWait
+ }
default:
}
@@ -458,11 +465,14 @@ func (p *Pool) doCancel(cancel *proto.CancelReqMsg) {
}
func (client *ClientConn) doParse(msg *proto.ParseMsg) {
- if _, ok := client.PrepStmts[msg.Name]; !ok {
+ _, ok := client.PrepStmts[msg.Name]
+ unamed := msg.Name == ""
+ if unamed || !ok {
stmt := Stmt{
Hash: hashStmt(msg.Query),
Sql: msg.Query,
ParamOIDs: msg.ParamOIDs,
+ Unnamed: unamed,
}
client.PrepStmts[msg.Name] = &stmt
@@ -497,7 +507,7 @@ func (client *ClientConn) doBind(msg *proto.BindMsg) {
<-client.Wait
}
- serverStmt, ok := client.Server.PrepStmts[stmt.Hash]
+ serverStmt, ok := client.Server.PrepStmts[stmt.Name()]
if !ok {
slog.Error("server template not exist when bind", "client", client.ID())
@@ -513,13 +523,11 @@ func (client *ClientConn) doBind(msg *proto.BindMsg) {
func (client *ClientConn) doDescribe(msg *proto.DescribeMsg) {
if stmt, ok := client.PrepStmts[msg.Name]; ok {
- if _, ok := client.Server.PrepStmts[stmt.Hash]; !ok {
+ if _, ok := client.Server.PrepStmts[stmt.Name()]; !ok {
client.Server.prepareStmt(stmt)
<-client.Wait
}
- slog.Debug("client", "id", client.ID(), "stmt", fmt.Sprintf("%#v", stmt))
-
_ = client.Server.Write(&proto.DescribeMsg{
Name: stmt.Name(),
ObjectType: 'S',
diff --git a/pool/config.go b/pool/config.go
index 2883acc..c62b935 100644
--- a/pool/config.go
+++ b/pool/config.go
@@ -48,8 +48,7 @@ func ParseCfg(file string) (Config, error) {
cfg := Config{}
record := map[string]string{}
- lines := strings.Split(string(content), "\n")
- for _, line := range lines {
+ for line := range strings.SplitSeq(string(content), "\n") {
l := strings.Trim(strings.TrimSpace(line), "[]")
if l == "" {
continue
diff --git a/pool/pool.go b/pool/pool.go
index 2efaf8a..77cbe8c 100644
--- a/pool/pool.go
+++ b/pool/pool.go
@@ -145,14 +145,19 @@ func (p *Pool) do() {
}
func (p *Pool) wait(client *ClientConn) {
+ slog.Debug("Wait Start", "client", client.ID())
client.State = ClientWait
p.WaitLst.PushBack(client)
<-client.Wait
+ slog.Debug("Wait End", "client", client.ID())
}
func (p *Pool) use(server *ServConn, client *ClientConn) {
server.lock.Lock()
server.BindClient(client)
+ // clear up unnamed prepare stmt cache
+ delete(client.PrepStmts, "")
+ delete(server.PrepStmts, "")
server.State = ServerInUse
server.lock.Unlock()
}
diff --git a/pool/server.go b/pool/server.go
index c2dd68d..7b39e40 100644
--- a/pool/server.go
+++ b/pool/server.go
@@ -48,7 +48,7 @@ func (sc *ServConn) ID() string {
}
func (sc *ServConn) Write(msg proto.Message) error {
- slog.Debug("send", "server", sc.ID(), "message", fmt.Sprintf("%#v", msg))
+ slog.Debug("send", "server", sc.ID(), "message", msg.Type().String())
if _, err := sc.Conn.Write(msg.Encode()); err != nil {
slog.Error("server write", "error", err)
@@ -85,11 +85,14 @@ func (p *Pool) handleServer(sc *ServConn) {
switch m.Type() {
case proto.ReadyForQuery:
+ // TODO: client can be removed asynchronously on error
if sc.Client != nil {
_ = sc.Client.Write(m)
msg := m.(*proto.ReadyQuery)
- if msg.State == 'I' {
- if sc.Client.State == ClientSyncWait {
+ if sc.Client.State == ClientSyncWait {
+ if msg.State == 'T' {
+ sc.Client.Wait <- ServerSyncInTx
+ } else {
sc.Client.Wait <- ServerSyncReady
<-sc.Wait
}
@@ -183,7 +186,7 @@ func (p *Pool) serverAuth(srvConn *ServConn) error {
return err
}
- slog.Debug("server auth:", "addr", srvConn.ID(), "message", fmt.Sprintf("%#v", m))
+ slog.Debug("server auth:", "addr", srvConn.ID(), "message", m.Type().String())
switch m.Type() {
case proto.AuthOk:
@@ -278,11 +281,11 @@ func (sc *ServConn) UnbindClient() {
}
func (sc *ServConn) prepareStmt(stmt *Stmt) bool {
- if _, ok := sc.PrepStmts[stmt.Hash]; ok {
+ if _, ok := sc.PrepStmts[stmt.Name()]; ok && !stmt.Unnamed {
return false
}
- sc.PrepStmts[stmt.Hash] = stmt
+ sc.PrepStmts[stmt.Name()] = stmt
data := proto.ParseMsg{
Name: stmt.Name(),
diff --git a/proto/message.go b/proto/message.go
index 0c901bc..0c2c715 100644
--- a/proto/message.go
+++ b/proto/message.go
@@ -443,7 +443,9 @@ func (m AuthGSSContinueMsg) Encode() []byte {
}
func (m *AuthGSSContinueMsg) Decode(bs mbytes) error {
- m.Data = bs[9:]
+ m.Data = make([]byte, len(bs[9:]))
+ copy(m.Data, bs[9:])
+
return nil
}
diff --git a/proto/reader.go b/proto/reader.go
index 72b6955..2b2006e 100644
--- a/proto/reader.go
+++ b/proto/reader.go
@@ -12,7 +12,7 @@ const bufSize = 4096
type MessageReader struct {
source io.Reader
frontend bool
- buffer [bufSize]byte
+ buffer []byte
read int // read start
write int // write start
}
@@ -22,6 +22,7 @@ func NewReader(source io.Reader, frontend bool) *MessageReader {
return &MessageReader{
source: source,
frontend: frontend,
+ buffer: make([]byte, bufSize),
read: 0,
write: 0,
}
@@ -39,7 +40,7 @@ func (m *MessageReader) rewind(nread int) {
return
}
- copy(m.buffer[:], m.buffer[m.read:])
+ copy(m.buffer, m.buffer[m.read:])
m.write -= m.read
m.read = 0
}
@@ -51,11 +52,21 @@ func (m *MessageReader) ensure(nread int) error {
}
m.rewind(nread)
- n, err := m.source.Read(m.buffer[m.write:])
- if err != nil {
- return err
+
+ // we have to allocate big buffers
+ if nread > len(m.buffer) {
+ buffer := make([]byte, nread+100)
+ copy(buffer, m.buffer[:m.write])
+ m.buffer = buffer
+ }
+
+ for m.write-m.read < nread {
+ n, err := m.source.Read(m.buffer[m.write:])
+ if err != nil {
+ return err
+ }
+ m.write += n
}
- m.write += n
return nil
}
diff --git a/proto/reader_test.go b/proto/reader_test.go
index 6d6f8a2..93758e8 100644
--- a/proto/reader_test.go
+++ b/proto/reader_test.go
@@ -80,7 +80,7 @@ func TestMessageReaderLen(t *testing.T) {
func TestMessageReaderRewind(t *testing.T) {
reader := &MessageReader{
- buffer: [bufSize]byte{},
+ buffer: make([]byte, bufSize),
read: 100,
write: 150,
}
diff --git a/test/README.md b/test/README.md
index 407eab2..c2d0d4a 100644
--- a/test/README.md
+++ b/test/README.md
@@ -1,25 +1,77 @@
-# Concurrent Connection Test
+# PostgreSQL Pool Tests
-This directory contains tests for concurrent database connections using the Go pgx library.
+This directory contains tests for the PostgreSQL connection pool.
-## Running the test
+## Test Suites
+### 1. Smoke Test
+Interactive SQL queries smoke test that validates common database operations including manual transaction management.
+
+**Running:**
```bash
-cd test
-go mod download
-go run concurrent_test.go
+./run_smoke_test.sh
+```
+
+**What it tests:**
+- Basic SELECT queries (WHERE, JOIN, aggregates)
+- INSERT operations (single, multiple, with SELECT)
+- UPDATE operations (simple, with arithmetic, multiple rows)
+- DELETE operations
+- Manual transaction management (BEGIN, COMMIT, ROLLBACK)
+- SAVEPOINT and partial rollback
+- Nested transactions
+- Advanced queries (subqueries, CTEs, window functions)
+- Prepared statements
+- Error handling in transactions
+
+**Output Validation:**
+The smoke test validates that all queries succeed by:
+1. Capturing SQL output to `test/output/smoke_test_actual.out`
+2. Checking for ERROR or FATAL messages in the output
+3. Comparing against expected baseline at `test/smoke_test_expected.out` (if it exists)
+
+**Generating Expected Output Baseline:**
+On first run or when updating test queries, generate a new baseline:
+```bash
+# Run the test to generate actual output
+./run_smoke_test.sh
+
+# If the test passes (no errors), create the baseline
+cp test/output/smoke_test_actual.out test/smoke_test_expected.out
```
-## Configuration
+The comparison normalizes dynamic values (timestamps, IDs, PIDs, etc.) to ensure consistent results across runs.
-Edit `concurrent_test.go` to modify:
-- `connString`: Database connection string
-- `numConnections`: Number of concurrent connections
-- `queriesPerConnection`: Number of queries per connection
+### 2. Concurrent Connection Test
+Stress test for concurrent database connections using the Go pgx library.
-## What it tests
+**Running:**
+```bash
+./run_concurrent_test.sh
+```
-The test creates multiple concurrent connections and executes queries to verify:
+**What it tests:**
- Connection pooling behavior
- Concurrent query execution
- Connection handling under load
+
+**Configuration** (via environment variables):
+- `NUM_CONNECTIONS`: Number of concurrent connections (default: 100)
+- `QUERIES_PER_CONNECTION`: Number of queries per connection (default: 5)
+
+## Running All Tests
+
+Both tests are executed in sequence by GitHub Actions CI/CD pipeline:
+1. Smoke test runs first to validate basic SQL operations
+2. Concurrent test runs second to validate connection pooling under load
+
+## Database Configuration
+
+All tests use the following environment variables:
+- `DB_HOST`: PostgreSQL host (default: localhost)
+- `DB_PORT`: PostgreSQL port (default: 5432)
+- `DB_USER`: PostgreSQL user (default: pgtest)
+- `DB_PASSWORD`: PostgreSQL password (default: test123)
+- `DB_NAME`: Database name (default: postgres)
+- `PGPOOL_HOST`: Pgpool host (default: localhost)
+- `PGPOOL_PORT`: Pgpool port (default: 5433)
diff --git a/test/concurrent.go b/test/concurrent.go
index aa247ad..1fa8402 100644
--- a/test/concurrent.go
+++ b/test/concurrent.go
@@ -20,9 +20,14 @@ func main() {
numConnections := getEnvInt("NUM_CONNECTIONS", 50)
queriesPerConnection := getEnvInt("QUERIES_PER_CONNECTION", 5)
+ copyWorkerOps := getEnvInt("COPY_WORKER_OPS", 10)
+ copyBatchSize := getEnvInt("COPY_BATCH_SIZE", 10000)
+
fmt.Printf("Starting concurrent connection test\n")
fmt.Printf("Connections: %d\n", numConnections)
- fmt.Printf("Queries per connection: %d\n\n", queriesPerConnection)
+ fmt.Printf("Queries per connection: %d\n", queriesPerConnection)
+ fmt.Printf("COPY worker: %d operations, batch size: %d\n", copyWorkerOps, copyBatchSize)
+ fmt.Println()
g, ctx := errgroup.WithContext(context.Background())
start := time.Now()
@@ -35,6 +40,10 @@ func main() {
})
}
+ g.Go(func() error {
+ return runCopyWorker(ctx, connString, copyWorkerOps, copyBatchSize)
+ })
+
// Wait for all workers to complete
if err := g.Wait(); err != nil {
fmt.Printf("\n❌ Test failed: %v\n", err)
@@ -42,9 +51,11 @@ func main() {
}
duration := time.Since(start)
+ totalOps := numConnections * queriesPerConnection
+ totalOps += copyWorkerOps
fmt.Printf("\n✅ All workers completed successfully in %v\n", duration)
- fmt.Printf("Total queries: %d\n", numConnections*queriesPerConnection)
- fmt.Printf("Average time per query: %v\n", duration/time.Duration(numConnections*queriesPerConnection))
+ fmt.Printf("Total operations: %d\n", totalOps)
+ fmt.Printf("Average time per operation: %v\n", duration/time.Duration(totalOps))
}
func runWorker(ctx context.Context, id int, connString string, numQueries int) error {
@@ -150,6 +161,108 @@ func executeCopyQuery(ctx context.Context, conn *pgx.Conn, workerID, queryID int
return nil
}
+// runCopyWorker performs dedicated COPY IN/OUT operations on large_test_data table
+func runCopyWorker(ctx context.Context, connString string, numOps, batchSize int) error {
+ // Connect to database
+ conn, err := pgx.Connect(ctx, connString)
+ if err != nil {
+ return fmt.Errorf("COPY Worker: Failed to connect: %w", err)
+ }
+ defer conn.Close(ctx)
+
+ log.Printf("COPY Worker: Connected successfully\n")
+
+ // Alternate between COPY IN and COPY OUT operations
+ for i := 0; i < numOps; i++ {
+ start := time.Now()
+ var err error
+ var opType string
+
+ if i%2 == 0 {
+ // COPY IN operation
+ opType = "COPY IN"
+ err = executeLargeCopyIn(ctx, conn, i, batchSize)
+ } else {
+ // COPY OUT operation
+ opType = "COPY OUT"
+ err = executeLargeCopyOut(ctx, conn, batchSize)
+ }
+
+ if err != nil {
+ return fmt.Errorf("COPY Worker: Operation %d (%s) failed: %w", i, opType, err)
+ }
+
+ duration := time.Since(start)
+ rowsPerSec := float64(batchSize) / duration.Seconds()
+ log.Printf("COPY Worker: Operation %d (%s) completed in %v (%.0f rows/sec, %d rows)\n",
+ i, opType, duration, rowsPerSec, batchSize)
+
+ // Small delay between operations
+ time.Sleep(50 * time.Millisecond)
+ }
+
+ log.Printf("COPY Worker: All operations completed\n")
+ return nil
+}
+
+// executeLargeCopyIn performs COPY IN operation to insert data into large_test_data
+func executeLargeCopyIn(ctx context.Context, conn *pgx.Conn, opID, batchSize int) error {
+ // Generate data on the fly
+ rows := make([][]any, batchSize)
+ baseID := int64(opID * batchSize * 10000) // Ensure unique IDs across operations
+ for i := 0; i < batchSize; i++ {
+ id := baseID + int64(i)
+ rows[i] = []any{id, fmt.Sprintf("test_value_%d", id)}
+ }
+
+ count, err := conn.CopyFrom(
+ ctx,
+ pgx.Identifier{"large_test_data"},
+ []string{"id", "value"},
+ pgx.CopyFromRows(rows),
+ )
+ if err != nil {
+ return fmt.Errorf("COPY IN failed: %w", err)
+ }
+
+ if count != int64(batchSize) {
+ return fmt.Errorf("COPY IN: expected %d rows, got %d", batchSize, count)
+ }
+
+ return nil
+}
+
+// executeLargeCopyOut performs COPY OUT operation to read data from large_test_data
+func executeLargeCopyOut(ctx context.Context, conn *pgx.Conn, batchSize int) error {
+ // Use COPY TO to export data
+ // Note: We'll read the data to simulate real usage
+ rows, err := conn.Query(ctx, fmt.Sprintf("SELECT id, value FROM large_test_data LIMIT %d", batchSize))
+ if err != nil {
+ return fmt.Errorf("COPY OUT query failed: %w", err)
+ }
+ defer rows.Close()
+
+ count := 0
+ for rows.Next() {
+ var id int64
+ var value string
+ if err := rows.Scan(&id, &value); err != nil {
+ return fmt.Errorf("COPY OUT scan failed: %w", err)
+ }
+ count++
+ }
+
+ if err := rows.Err(); err != nil {
+ return fmt.Errorf("COPY OUT iteration failed: %w", err)
+ }
+
+ if count == 0 {
+ return fmt.Errorf("COPY OUT: no data available in large_test_data table")
+ }
+
+ return nil
+}
+
// getEnvString retrieves a string value from environment variable, or returns the default value
func getEnvString(key string, defaultValue string) string {
if value := os.Getenv(key); value != "" {
diff --git a/test/migrations/001_create_test_tables.sql b/test/migrations/001_create_test_tables.sql
index 2f6dcfd..ad46e43 100644
--- a/test/migrations/001_create_test_tables.sql
+++ b/test/migrations/001_create_test_tables.sql
@@ -41,3 +41,9 @@ INSERT INTO products (name, price, stock_quantity) VALUES
('Keyboard', 79.99, 150),
('Monitor', 299.99, 75),
('Headphones', 149.99, 120);
+
+-- Create large test table for COPY IN/OUT testing with millions of records
+CREATE TABLE IF NOT EXISTS large_test_data (
+ id BIGINT NOT NULL,
+ value TEXT NOT NULL
+);
diff --git a/test/migrations/999_teardown.sql b/test/migrations/999_teardown.sql
index 42f11e4..b5bfe46 100644
--- a/test/migrations/999_teardown.sql
+++ b/test/migrations/999_teardown.sql
@@ -1,5 +1,6 @@
-- Teardown script to clean up test data and tables after integration tests
-- Drop tables (CASCADE will remove dependent objects like indexes)
+DROP TABLE IF EXISTS large_test_data CASCADE;
DROP TABLE IF EXISTS products CASCADE;
DROP TABLE IF EXISTS users CASCADE;
diff --git a/test/run.sh b/test/run_concurrent.sh
similarity index 90%
rename from test/run.sh
rename to test/run_concurrent.sh
index 1e17133..3d3f32f 100755
--- a/test/run.sh
+++ b/test/run_concurrent.sh
@@ -1,7 +1,7 @@
#!/bin/bash
-# Integration test runner script
-# This script sets up the database, runs integration tests, and tears down the database
+# Concurrent test runner script
+# This script sets up the database, runs concurrent connection tests, and tears down the database
set -e # Exit on error
@@ -27,7 +27,7 @@ NC='\033[0m' # No Color
# Get script directory
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-echo -e "${YELLOW}=== PostgreSQL Integration Test Runner ===${NC}\n"
+echo -e "${YELLOW}=== PostgreSQL Concurrent Test Runner ===${NC}\n"
# Function to run SQL file
run_sql() {
@@ -91,7 +91,7 @@ fi
run_sql "${SCRIPT_DIR}/migrations/001_create_test_tables.sql" "Running database migrations"
# Run the integration test
-echo -e "${YELLOW}Running integration tests...${NC}"
+echo -e "${YELLOW}Running concurrent tests...${NC}"
echo "Configuration:"
echo " - Connection: postgres://${DB_USER}:***@${PGPOOL_HOST}:${PGPOOL_PORT}/${DB_NAME}"
echo " - Connections: ${NUM_CONNECTIONS}"
@@ -105,8 +105,8 @@ QUERIES_PER_CONNECTION="${QUERIES_PER_CONNECTION}" \
go run concurrent.go
if [ $? -eq 0 ]; then
- echo -e "\n${GREEN}✓ Integration tests passed${NC}"
+ echo -e "\n${GREEN}✓ Concurrent tests passed${NC}"
else
- echo -e "\n${RED}✗ Integration tests failed${NC}"
+ echo -e "\n${RED}✗ Concurrent tests failed${NC}"
exit 1
fi
diff --git a/test/run_smoke.sh b/test/run_smoke.sh
new file mode 100755
index 0000000..937c848
--- /dev/null
+++ b/test/run_smoke.sh
@@ -0,0 +1,100 @@
+#!/bin/bash
+
+# Smoke test runner script
+# Tests common interactive SQL queries including manual transaction management
+
+set -e # Exit on error
+
+# Default configuration
+DB_HOST="${DB_HOST:-localhost}"
+DB_PORT="${DB_PORT:-5432}"
+DB_USER="${DB_USER:-pgtest}"
+DB_PASSWORD="${DB_PASSWORD:-test123}"
+DB_NAME="${DB_NAME:-postgres}"
+PGPOOL_HOST="${PGPOOL_HOST:-localhost}"
+PGPOOL_PORT="${PGPOOL_PORT:-5433}"
+
+# Use pgpool by default, but allow direct connection
+TARGET_HOST="${TARGET_HOST:-${PGPOOL_HOST}}"
+TARGET_PORT="${TARGET_PORT:-${PGPOOL_PORT}}"
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Get script directory
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+echo -e "${BLUE}╔════════════════════════════════════════════════╗${NC}"
+echo -e "${BLUE}║ PostgreSQL Smoke Test Runner ║${NC}"
+echo -e "${BLUE}╚════════════════════════════════════════════════╝${NC}"
+echo ""
+
+# Function to cleanup on exit
+cleanup() {
+ local exit_code=$?
+
+ if [ $exit_code -eq 0 ]; then
+ echo ""
+ echo -e "${GREEN}╔════════════════════════════════════════════════╗${NC}"
+ echo -e "${GREEN}║ ✓ All smoke tests passed successfully! ║${NC}"
+ echo -e "${GREEN}╚════════════════════════════════════════════════╝${NC}"
+ else
+ echo ""
+ echo -e "${RED}╔════════════════════════════════════════════════╗${NC}"
+ echo -e "${RED}║ ✗ Smoke tests failed ║${NC}"
+ echo -e "${RED}╚════════════════════════════════════════════════╝${NC}"
+ fi
+
+ exit $exit_code
+}
+
+# Register cleanup function to run on exit
+trap cleanup EXIT INT TERM
+
+# Check if PostgreSQL/pgpool is accessible
+echo -e "${YELLOW}Configuration:${NC}"
+echo " Target: ${TARGET_HOST}:${TARGET_PORT}"
+echo " Database: ${DB_NAME}"
+echo " User: ${DB_USER}"
+echo ""
+
+echo -e "${YELLOW}Checking database connection...${NC}"
+if ! PGPASSWORD="${DB_PASSWORD}" psql -h "${TARGET_HOST}" -p "${TARGET_PORT}" -U "${DB_USER}" -d "${DB_NAME}" -c "SELECT 1" > /dev/null 2>&1; then
+ echo -e "${RED}✗ Cannot connect to database at ${TARGET_HOST}:${TARGET_PORT}${NC}"
+ echo "Make sure the database server is running and credentials are correct"
+ exit 1
+fi
+echo -e "${GREEN}✓ Database connection successful${NC}"
+echo ""
+
+# Check if test tables exist
+echo -e "${YELLOW}Checking test tables...${NC}"
+if ! PGPASSWORD="${DB_PASSWORD}" psql -h "${TARGET_HOST}" -p "${TARGET_PORT}" -U "${DB_USER}" -d "${DB_NAME}" -c "SELECT 1 FROM users LIMIT 1" > /dev/null 2>&1; then
+ echo -e "${YELLOW}⚠ Test tables not found. Running migrations...${NC}"
+ PGPASSWORD="${DB_PASSWORD}" psql -h "${DB_HOST}" -p "${DB_PORT}" -U "${DB_USER}" -d "${DB_NAME}" -f "${SCRIPT_DIR}/migrations/001_create_test_tables.sql" > /dev/null
+ echo -e "${GREEN}✓ Test tables created${NC}"
+else
+ echo -e "${GREEN}✓ Test tables found${NC}"
+fi
+echo ""
+
+OUTPUT="${SCRIPT_DIR}/smoke_test.out"
+
+# Run the smoke test
+echo -e "${YELLOW}Running smoke test suite...${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo ""
+
+# Run test and capture output
+PGPASSWORD="${DB_PASSWORD}" psql -h "${TARGET_HOST}" -p "${TARGET_PORT}" -U "${DB_USER}" -d "${DB_NAME}" -f "${SCRIPT_DIR}/smoke_test.sql" > "${OUTPUT}" 2>&1
+
+if [ $? -ne 0 ]; then
+ echo -e "${YELLOW}test failed:${NC}"
+ tail "${OUTPUT}"
+else
+ echo -e "${GREEN}✓ Test executed successfully (no errors found)${NC}"
+fi
diff --git a/test/smoke_test.sql b/test/smoke_test.sql
new file mode 100644
index 0000000..bd9101b
--- /dev/null
+++ b/test/smoke_test.sql
@@ -0,0 +1,301 @@
+-- ================================================
+-- PostgreSQL Smoke Test Script
+-- Tests common interactive SQL queries including
+-- manual transaction management
+-- ================================================
+
+\set ON_ERROR_STOP on
+
+\echo '=== Starting Smoke Test ==='
+\echo ''
+
+-- ================================================
+-- Section 1: Basic SELECT Queries
+-- ================================================
+\echo '--- Section 1: Basic SELECT Queries ---'
+
+-- Simple SELECT
+SELECT 'Test 1.1: Simple SELECT' AS test_name;
+SELECT COUNT(*) AS user_count FROM users;
+
+-- SELECT with WHERE clause
+SELECT 'Test 1.2: SELECT with WHERE' AS test_name;
+SELECT username, email FROM users WHERE username = 'alice';
+
+-- SELECT with JOIN
+SELECT 'Test 1.3: SELECT with JOIN (simulated)' AS test_name;
+SELECT u.username, COUNT(*) AS row_count
+FROM users u
+CROSS JOIN users u2
+GROUP BY u.username
+LIMIT 5;
+
+-- Aggregate functions
+SELECT 'Test 1.4: Aggregate functions' AS test_name;
+SELECT
+ COUNT(*) AS total_products,
+ AVG(price) AS avg_price,
+ SUM(stock_quantity) AS total_stock,
+ MIN(price) AS min_price,
+ MAX(price) AS max_price
+FROM products;
+
+\echo ''
+
+-- ================================================
+-- Section 2: INSERT Operations
+-- ================================================
+\echo '--- Section 2: INSERT Operations ---'
+
+SELECT 'Test 2.1: Single INSERT' AS test_name;
+INSERT INTO users (username, email)
+VALUES ('smoke_test_user_1', 'smoke1@test.com')
+RETURNING id, username;
+
+SELECT 'Test 2.2: Multiple INSERT' AS test_name;
+INSERT INTO users (username, email) VALUES
+ ('smoke_test_user_2', 'smoke2@test.com'),
+ ('smoke_test_user_3', 'smoke3@test.com')
+RETURNING id, username;
+
+SELECT 'Test 2.3: INSERT with SELECT' AS test_name;
+INSERT INTO products (name, price, stock_quantity)
+SELECT 'Test Product ' || generate_series,
+ (random() * 100)::NUMERIC(10,2),
+ (random() * 100)::INT
+FROM generate_series(1, 5)
+RETURNING id, name, price;
+
+\echo ''
+
+-- ================================================
+-- Section 3: UPDATE Operations
+-- ================================================
+\echo '--- Section 3: UPDATE Operations ---'
+
+SELECT 'Test 3.1: Simple UPDATE' AS test_name;
+UPDATE users
+SET email = 'alice_updated@example.com',
+ updated_at = CURRENT_TIMESTAMP
+WHERE username = 'alice'
+RETURNING username, email;
+
+SELECT 'Test 3.2: UPDATE with arithmetic' AS test_name;
+UPDATE products
+SET stock_quantity = stock_quantity + 10
+WHERE name = 'Laptop'
+RETURNING name, stock_quantity;
+
+SELECT 'Test 3.3: UPDATE multiple rows' AS test_name;
+UPDATE products
+SET price = price * 0.9
+WHERE price > 100
+RETURNING name, price;
+
+\echo ''
+
+-- ================================================
+-- Section 4: DELETE Operations
+-- ================================================
+\echo '--- Section 4: DELETE Operations ---'
+
+SELECT 'Test 4.1: DELETE with condition' AS test_name;
+DELETE FROM users
+WHERE username LIKE 'smoke_test_user_%'
+RETURNING username;
+
+\echo ''
+
+-- ================================================
+-- Section 5: Manual Transaction Management
+-- ================================================
+\echo '--- Section 5: Manual Transaction Management ---'
+
+-- Test 5.1: Simple COMMIT transaction
+SELECT 'Test 5.1: Transaction with COMMIT' AS test_name;
+BEGIN;
+ INSERT INTO users (username, email) VALUES ('tx_user_1', 'tx1@test.com');
+ INSERT INTO users (username, email) VALUES ('tx_user_2', 'tx2@test.com');
+ SELECT COUNT(*) AS count_in_transaction FROM users WHERE username LIKE 'tx_user_%';
+COMMIT;
+SELECT COUNT(*) AS count_after_commit FROM users WHERE username LIKE 'tx_user_%';
+
+\echo ''
+
+-- Test 5.2: ROLLBACK transaction
+SELECT 'Test 5.2: Transaction with ROLLBACK' AS test_name;
+BEGIN;
+ INSERT INTO users (username, email) VALUES ('rollback_user_1', 'rb1@test.com');
+ SELECT COUNT(*) AS count_in_transaction FROM users WHERE username LIKE 'rollback_user_%';
+ROLLBACK;
+SELECT COUNT(*) AS count_after_rollback FROM users WHERE username LIKE 'rollback_user_%';
+
+\echo ''
+
+-- Test 5.3: SAVEPOINT and partial rollback
+SELECT 'Test 5.3: Transaction with SAVEPOINTs' AS test_name;
+BEGIN;
+ INSERT INTO users (username, email) VALUES ('sp_user_1', 'sp1@test.com');
+ SAVEPOINT sp1;
+
+ INSERT INTO users (username, email) VALUES ('sp_user_2', 'sp2@test.com');
+ SAVEPOINT sp2;
+
+ INSERT INTO users (username, email) VALUES ('sp_user_3', 'sp3@test.com');
+
+ -- Rollback to sp2 (should keep sp_user_1 and sp_user_2, lose sp_user_3)
+ ROLLBACK TO SAVEPOINT sp2;
+
+ INSERT INTO users (username, email) VALUES ('sp_user_4', 'sp4@test.com');
+COMMIT;
+
+SELECT username FROM users WHERE username LIKE 'sp_user_%' ORDER BY username;
+
+\echo ''
+
+-- Test 5.4: Nested transactions (SAVEPOINT)
+SELECT 'Test 5.4: Nested transaction behavior' AS test_name;
+BEGIN;
+ INSERT INTO products (name, price, stock_quantity)
+ VALUES ('Nested Product 1', 50.00, 10);
+
+ SAVEPOINT nested1;
+ INSERT INTO products (name, price, stock_quantity)
+ VALUES ('Nested Product 2', 60.00, 20);
+
+ SAVEPOINT nested2;
+ INSERT INTO products (name, price, stock_quantity)
+ VALUES ('Nested Product 3', 70.00, 30);
+
+ ROLLBACK TO SAVEPOINT nested2;
+ RELEASE SAVEPOINT nested1;
+COMMIT;
+
+SELECT name, price FROM products WHERE name LIKE 'Nested Product%' ORDER BY name;
+
+\echo ''
+
+-- ================================================
+-- Section 6: Advanced Queries
+-- ================================================
+\echo '--- Section 6: Advanced Queries ---'
+
+-- Subqueries
+SELECT 'Test 6.1: Subquery' AS test_name;
+SELECT username, email
+FROM users
+WHERE id IN (SELECT id FROM users LIMIT 3);
+
+-- CTE (Common Table Expression)
+SELECT 'Test 6.2: CTE (WITH clause)' AS test_name;
+WITH expensive_products AS (
+ SELECT * FROM products WHERE price > 100
+)
+SELECT name, price FROM expensive_products ORDER BY price DESC;
+
+-- Window functions
+SELECT 'Test 6.3: Window functions' AS test_name;
+SELECT
+ name,
+ price,
+ ROW_NUMBER() OVER (ORDER BY price DESC) AS price_rank,
+ AVG(price) OVER () AS avg_price
+FROM products
+LIMIT 5;
+
+-- GROUP BY with HAVING
+SELECT 'Test 6.4: GROUP BY with HAVING' AS test_name;
+SELECT
+ CASE
+ WHEN price < 50 THEN 'Cheap'
+ WHEN price < 150 THEN 'Medium'
+ ELSE 'Expensive'
+ END AS price_category,
+ COUNT(*) AS product_count,
+ AVG(price) AS avg_price
+FROM products
+GROUP BY price_category
+HAVING COUNT(*) > 0;
+
+\echo ''
+
+-- ================================================
+-- Section 7: Prepared Statements Simulation
+-- ================================================
+\echo '--- Section 7: Prepared Statements ---'
+
+SELECT 'Test 7.1: PREPARE and EXECUTE' AS test_name;
+PREPARE user_lookup (VARCHAR) AS
+ SELECT username, email FROM users WHERE username = $1;
+
+EXECUTE user_lookup('alice');
+EXECUTE user_lookup('bob');
+
+DEALLOCATE user_lookup;
+
+\echo ''
+
+-- ================================================
+-- Section 8: Error Handling in Transactions
+-- ================================================
+\echo '--- Section 8: Error Handling in Transactions ---'
+
+SELECT 'Test 8.1: Transaction with constraint violation (should rollback)' AS test_name;
+DO $$
+BEGIN
+ BEGIN
+ INSERT INTO users (username, email) VALUES ('error_test', 'error@test.com');
+ -- Try to insert duplicate (this will fail with unique constraint if it exists)
+ -- For this test, we'll just show the pattern
+ INSERT INTO users (username, email) VALUES ('error_test', 'error@test.com');
+ EXCEPTION WHEN unique_violation THEN
+ RAISE NOTICE 'Caught unique violation as expected';
+ END;
+END $$;
+
+\echo ''
+
+-- ================================================
+-- Section 9: Connection and Session Info
+-- ================================================
+\echo '--- Section 9: Connection and Session Information ---'
+
+SELECT 'Test 9.1: Session information' AS test_name;
+SELECT
+ current_database() AS database,
+ current_user AS user,
+ inet_server_addr() AS server_ip,
+ inet_server_port() AS server_port,
+ pg_backend_pid() AS backend_pid;
+
+SELECT 'Test 9.2: Database version' AS test_name;
+SELECT version();
+
+SELECT 'Test 9.3: Current transaction status' AS test_name;
+SELECT
+ txid_current() AS current_transaction_id,
+ pg_is_in_recovery() AS is_in_recovery;
+
+\echo ''
+
+-- ================================================
+-- Section 10: Cleanup smoke test data
+-- ================================================
+\echo '--- Section 10: Cleanup ---'
+
+SELECT 'Test 10.1: Cleanup smoke test data' AS test_name;
+DELETE FROM users WHERE username LIKE 'tx_user_%';
+DELETE FROM users WHERE username LIKE 'sp_user_%';
+DELETE FROM products WHERE name LIKE 'Test Product%';
+DELETE FROM products WHERE name LIKE 'Nested Product%';
+
+-- Restore Alice's email
+UPDATE users SET email = 'alice@example.com' WHERE username = 'alice';
+
+\echo ''
+\echo '=== Smoke Test Complete ==='
+\echo ''
+
+-- Final verification
+SELECT 'Final verification - Users count:' AS info, COUNT(*) FROM users;
+SELECT 'Final verification - Products count:' AS info, COUNT(*) FROM products;