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docs: Add contributing guide and docs about performance tests (#235)
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MaxymVlasov authored Oct 1, 2021
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2 changes: 1 addition & 1 deletion .editorconfig
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Expand Up @@ -7,7 +7,7 @@ charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

[{*.{sh,py,md},Dockerfile}]
[{*.{py,md},Dockerfile}]
indent_size = 4

[*.md]
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81 changes: 81 additions & 0 deletions .github/CONTRIBUTING.md
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# Notes for contributors

1. Python hooks are supported now too. All you have to do is:
1. add a line to the `console_scripts` array in `entry_points` in `setup.py`
2. Put your python script in the `pre_commit_hooks` folder

Enjoy the clean, valid, and documented code!

* [Run and debug hooks locally](#run-and-debug-hooks-locally)
* [Run hook performance test](#run-hook-performance-test)
* [Run via BASH](#run-via-bash)
* [Run via Docker](#run-via-docker)
* [Check results](#check-results)
* [Cleanup](#cleanup)

## Run and debug hooks locally

```bash
pre-commit try-repo {-a} /path/to/local/pre-commit-terraform/repo {hook_name}
```

I.e.

```bash
pre-commit try-repo /mnt/c/Users/tf/pre-commit-terraform terraform_fmt # Run only `terraform_fmt` check
pre-commit try-repo -a ~/pre-commit-terraform # run all existing checks from repo
```

Running `pre-commit` with `try-repo` ignores all arguments specified in `.pre-commit-config.yaml`.

## Run hook performance test

To check is your improvement not violate performance, we have dummy execution time tests.

Script accept next options:

| # | Name | Example value | Description |
| --- | ---------------------------------- | ------------------------------------------------------------------------ | ---------------------------------------------------- |
| 1 | `TEST_NUM` | `200` | How many times need repeat test |
| 2 | `TEST_COMMAND` | `'pre-commit try-repo -a /tmp/159/pre-commit-terraform terraform_tfsec'` | Valid pre-commit command |
| 3 | `TEST_DIR` | `'/tmp/infrastructure'` | Dir on what you run tests. |
| 4 | `TEST_DESCRIPTION` | ```'`terraform_tfsec` PR #123:'``` | Text that you'd like to see in result |
| 5 | `RAW_TEST_`<br>`RESULTS_FILE_NAME` | `terraform_tfsec_pr123` | (Temporary) File where all test data will be stored. |

### Run via BASH

```bash
# Install deps
sudo apt install -y datamash
# Run tests
./hooks_performance_test.sh 200 'pre-commit try-repo -a /tmp/159/pre-commit-terraform terraform_tfsec' '/tmp/infrastructure' '`terraform_tfsec` v1.51.0:' 'terraform_tfsec_pr159'
```

### Run via Docker

```bash
# Build `pre-commit` image
docker build -t pre-commit --build-arg INSTALL_ALL=true .
# Build test image
docker build -t pre-commit-tests tests/
# Run
TEST_NUM=1
TEST_DIR='/tmp/infrastructure'
PRE_COMMIT_DIR="$(pwd)"
TEST_COMMAND='pre-commit try-repo -a /pct terraform_tfsec'
TEST_DESCRIPTION='`terraform_tfsec` v1.51.0:'
RAW_TEST_RESULTS_FILE_NAME='terraform_tfsec_pr159'

docker run -v "$PRE_COMMIT_DIR:/pct:rw" -v "$TEST_DIR:/lint:ro" pre-commit-tests \
$TEST_NUM "$TEST_COMMAND" '/lint' "$RAW_TEST_RESULTS_FILE_NAME" "$RAW_TEST_RESULTS_FILE_NAME"
```

### Check results

Results will be located at `./test/results` dir.

### Cleanup

```bash
sudo rm -rf tests/results
```
1 change: 1 addition & 0 deletions .gitignore
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tests/results/*
26 changes: 2 additions & 24 deletions README.md
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[![Github tag](https://img.shields.io/github/tag/antonbabenko/pre-commit-terraform.svg)](https://github.com/antonbabenko/pre-commit-terraform/releases) ![maintenance status](https://img.shields.io/maintenance/yes/2021.svg) [![Help Contribute to Open Source](https://www.codetriage.com/antonbabenko/pre-commit-terraform/badges/users.svg)](https://www.codetriage.com/antonbabenko/pre-commit-terraform)

Want to Contribute? Check [open issues](https://github.com/antonbabenko/pre-commit-terraform/issues?q=label%3A%22good+first+issue%22+is%3Aopen+sort%3Aupdated-desc) and [contributing notes](/.github/CONTRIBUTING.md).

* [How to install](#how-to-install)
* [1. Install dependencies](#1-install-dependencies)
* [2. Install the pre-commit hook globally](#2-install-the-pre-commit-hook-globally)
Expand All @@ -15,8 +17,6 @@
* [terraform_tflint](#terraform_tflint)
* [terraform_tfsec](#terraform_tfsec)
* [terraform_validate](#terraform_validate)
* [Notes for contributors](#notes-for-contributors)
* [Run and debug hooks locally](#run-and-debug-hooks-locally)
* [Authors](#authors)
* [License](#license)

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**Warning:** If you use Terraform workspaces, DO NOT use this workaround ([details](https://github.com/antonbabenko/pre-commit-terraform/issues/203#issuecomment-918791847)). Wait to [`force-init`](https://github.com/antonbabenko/pre-commit-terraform/issues/224) option implementation
## Notes for contributors
1. Python hooks are supported now too. All you have to do is:
1. add a line to the `console_scripts` array in `entry_points` in `setup.py`
2. Put your python script in the `pre_commit_hooks` folder
Enjoy the clean, valid, and documented code!
### Run and debug hooks locally
```bash
pre-commit try-repo {-a} /path/to/local/pre-commit-terraform/repo {hook_name}
```
I.e.
```bash
pre-commit try-repo /mnt/c/Users/tf/pre-commit-terraform terraform_fmt # Run only `terraform_fmt` check
pre-commit try-repo -a ~/pre-commit-terraform # run all existing checks from repo
```
Running `pre-commit` with `try-repo` ignores all arguments specified in `.pre-commit-config.yaml`.
## Authors
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11 changes: 11 additions & 0 deletions tests/Dockerfile
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FROM pre-commit

RUN apt update && \
apt install -y \
datamash \
time && \
# Cleanup
rm -rf /var/lib/apt/lists/*

WORKDIR /pct
ENTRYPOINT [ "/pct/tests/hooks_performance_test.sh" ]
126 changes: 126 additions & 0 deletions tests/hooks_performance_test.sh
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#!/usr/bin/env bash

TEST_NUM=$1 # 1000
TEST_COMMAND=$2 # 'pre-commit try-repo -a /tmp/159/pre-commit-terraform terraform_tfsec'
TEST_DIR=$3 # '/tmp/infrastructure'
TEST_DESCRIPTION="$TEST_NUM runs '$4'" # '`terraform_tfsec` PR #123:'
RAW_TEST_RESULTS_FILE_NAME=$5 # terraform_tfsec_pr123

function run_tests {
local TEST_NUM=$1
local TEST_DIR=$2
local TEST_COMMAND
IFS=" " read -r -a TEST_COMMAND <<< "$3"
local FILE_NAME_TO_SAVE_TEST_RESULTS=$4

local RESULTS_DIR
RESULTS_DIR="$(pwd)/tests/results"

cd "$TEST_DIR" || { echo "Specified TEST_DIR does not exist" && exit 1; }

for ((i = 1; i <= TEST_NUM; i++)); do
{
echo -e "\n\nTest run $i times\n\n"
/usr/bin/time --quiet -f '%U user %S system %P cpu %e total' \
"${TEST_COMMAND[@]}"
} 2>> "$RESULTS_DIR/$FILE_NAME_TO_SAVE_TEST_RESULTS"
done
# shellcheck disable=2164 # Always exist
cd - > /dev/null
}

function generate_table {
local FILE_PATH="tests/results/$1"

local users_seconds system_seconds cpu total_time
users_seconds=$(awk '{ print $1; }' "$FILE_PATH")
system_seconds=$(awk '{ print $3; }' "$FILE_PATH")
cpu=$(awk '{ gsub("%","",$5); print $5; }' "$FILE_PATH")
total_time=$(awk '{ print $7; }' "$FILE_PATH")

echo "
| time command | max | min | mean | median |
| -------------- | ------ | ------ | -------- | ------ |
| users seconds | $(
printf %"s\n" $users_seconds | datamash max 1
) | $(
printf %"s\n" $users_seconds | datamash min 1
) | $(
printf %"s\n" $users_seconds | datamash mean 1
) | $(printf %"s\n" $users_seconds | datamash median 1) |
| system seconds | $(
printf %"s\n" $system_seconds | datamash max 1
) | $(
printf %"s\n" $system_seconds | datamash min 1
) | $(
printf %"s\n" $system_seconds | datamash mean 1
) | $(printf %"s\n" $system_seconds | datamash median 1) |
| CPU % | $(
printf %"s\n" $cpu | datamash max 1
) | $(
printf %"s\n" $cpu | datamash min 1
) | $(
printf %"s\n" $cpu | datamash mean 1
) | $(printf %"s\n" $cpu | datamash median 1) |
| Total time | $(
printf %"s\n" $total_time | datamash max 1
) | $(
printf %"s\n" $total_time | datamash min 1
) | $(
printf %"s\n" $total_time | datamash mean 1
) | $(printf %"s\n" $total_time | datamash median 1) |
"
}

function save_result {
local DESCRIPTION=$1
local TABLE=$2
local TEST_RUN_START_TIME=$3
local TEST_RUN_END_TIME=$4

local FILE_NAME=${5:-"tests_result.md"}

echo -e "\n$DESCRIPTION" >> "tests/results/$FILE_NAME"
echo -e "$TABLE" >> "tests/results/$FILE_NAME"
# shellcheck disable=SC2016,SC2128 # Irrelevant
echo -e '
<details><summary>Run details</summary>
* Test Start: '"$TEST_RUN_START_TIME"'
* Test End: '"$TEST_RUN_END_TIME"'
| Variable name | Value |
| ---------------------------- | --- |
| `TEST_NUM` | <code>'"$TEST_NUM"'</code> |
| `TEST_COMMAND` | <code>'"$TEST_COMMAND"'</code> |
| `TEST_DIR` | <code>'"$TEST_DIR"'</code> |
| `TEST_DESCRIPTION` | <code>'"$TEST_DESCRIPTION"'</code> |
| `RAW_TEST_RESULTS_FILE_NAME` | <code>'"$RAW_TEST_RESULTS_FILE_NAME"'</code> |
Memory info (`head -n 6 /proc/meminfo`):
```bash
'"$(head -n 6 /proc/meminfo)"'
```
CPU info:
```bash
Real procs: '"$(grep ^cpu\\scores /proc/cpuinfo | uniq | awk '{print $4}')"'
Virtual (hyper-threading) procs: '"$(grep -c ^processor /proc/cpuinfo)"'
'"$(tail -n 28 /proc/cpuinfo)"'
```
</details>
' >> "tests/results/$FILE_NAME"

}

mkdir -p tests/results
TEST_RUN_START_TIME=$(date -u)
# shellcheck disable=SC2128 # Irrelevant
run_tests "$TEST_NUM" "$TEST_DIR" "$TEST_COMMAND" "$RAW_TEST_RESULTS_FILE_NAME"
TEST_RUN_END_TIME=$(date -u)

TABLE=$(generate_table "$RAW_TEST_RESULTS_FILE_NAME")
save_result "$TEST_DESCRIPTION" "$TABLE" "$TEST_RUN_START_TIME" "$TEST_RUN_END_TIME"

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