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ci: initial setup (#1)

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23
.chglog/CHANGELOG.tpl.md Executable file
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# Changelog
{{ range .Versions -}}
## {{ if .Tag.Previous }}[{{ .Tag.Name }}]({{ $.Info.RepositoryURL }}/compare/{{ .Tag.Previous.Name }}...{{ .Tag.Name }}){{ else }}{{ .Tag.Name }}{{ end }} ({{ datetime "2006-01-02" .Tag.Date }})
{{ range .CommitGroups -}}
### {{ .Title }}
{{ range .Commits -}}
- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
{{ end }}
{{ end -}}
{{- if .NoteGroups -}}
{{ range .NoteGroups -}}
### {{ .Title }}
{{ range .Notes }}
{{ .Body }}
{{ end }}
{{ end -}}
{{ end -}}
{{ end -}}

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.chglog/config.yml Executable file
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style: github
template: CHANGELOG.tpl.md
info:
title: CHANGELOG
repository_url: https://github.com/owncloud-ci/retry
options:
commit_groups:
title_maps:
feat: Features
fix: Bug Fixes
perf: Performance Improvements
refactor: Code Refactoring
chore: Others
test: Testing
ci: CI Pipeline
docs: Documentation
header:
pattern: "^(\\w*)(?:\\(([\\w\\$\\.\\-\\*\\s]*)\\))?\\:\\s(.*)$"
pattern_maps:
- Type
- Scope
- Subject
notes:
keywords:
- BREAKING CHANGE

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.drone.star Normal file
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def main(ctx):
before = testing(ctx)
stages = []
after = release(ctx) + notification(ctx)
for b in before:
for s in stages:
s["depends_on"].append(b["name"])
for s in stages:
for a in after:
a["depends_on"].append(s["name"])
return before + stages + after
def testing(ctx):
return [{
"kind": "pipeline",
"type": "docker",
"name": "testing",
"platform": {
"os": "linux",
"arch": "amd64",
},
"steps": [
{
"name": "lint",
"image": "koalaman/shellcheck-alpine:stable",
"commands": [
"shellcheck ./retry",
],
},
],
"trigger": {
"ref": [
"refs/heads/master",
"refs/tags/**",
"refs/pull/**",
],
},
}]
def release(ctx):
return [{
"kind": "pipeline",
"type": "docker",
"name": "release",
"steps": [
{
"name": "changelog",
"image": "thegeeklab/git-chglog",
"commands": [
"git fetch -tq",
"git-chglog --no-color --no-emoji %s" % (ctx.build.ref.replace("refs/tags/", "") if ctx.build.event == "tag" else "--next-tag unreleased unreleased"),
"git-chglog --no-color --no-emoji -o CHANGELOG.md %s" % (ctx.build.ref.replace("refs/tags/", "") if ctx.build.event == "tag" else "--next-tag unreleased unreleased"),
]
},
{
"name": "release",
"image": "plugins/github-release",
"settings": {
"api_key": {
"from_secret": "github_token",
},
"note": "CHANGELOG.md",
"overwrite": True,
"title": ctx.build.ref.replace("refs/tags/", ""),
"files": [
"retry"
],
},
"when": {
"ref": [
"refs/tags/**",
],
},
}
],
"depends_on": [
"testing",
],
"trigger": {
"ref": [
"refs/heads/master",
"refs/tags/**",
"refs/pull/**",
],
},
}]
def notification(ctx):
return [{
"kind": "pipeline",
"type": "docker",
"name": "notify",
"clone": {
"disable": True,
},
"steps": [
{
"name": "notify",
"image": "plugins/slack",
"settings": {
"webhook": {
"from_secret": "private_rocketchat",
},
"channel": "builds",
},
}
],
"depends_on": [
"release",
],
"trigger": {
"ref": [
"refs/heads/master",
"refs/tags/**",
],
"status": [
"success",
"failure",
],
},
}]

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.github/settings.yml vendored Normal file
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---
repository:
name: retry
description: Retry any shell command
homepage: https://hub.docker.com/r/owncloudci/retry
topics: tools
private: false
has_issues: true
has_projects: false
has_wiki: false
has_downloads: false
default_branch: master
allow_squash_merge: true
allow_merge_commit: true
allow_rebase_merge: true
labels:
- name: bug
color: d73a4a
description: Something isn't working
- name: documentation
color: 0075ca
description: Improvements or additions to documentation
- name: duplicate
color: cfd3d7
description: This issue or pull request already exists
- name: enhancement
color: a2eeef
description: New feature or request
- name: good first issue
color: 7057ff
description: Good for newcomers
- name: help wanted
color: 008672
description: Extra attention is needed
- name: invalid
color: e4e669
description: This doesn't seem right
- name: question
color: d876e3
description: Further information is requested
- name: wontfix
color: ffffff
description: This will not be worked on
branches:
- name: master
protection:
required_pull_request_reviews: null
required_status_checks:
strict: true
contexts:
- continuous-integration/drone/pr
enforce_admins: null
restrictions: null

2
.gitignore vendored Normal file
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.drone.yml
CHANGELOG.md

4
.renovaterc.json Normal file
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{
"$schema": "https://docs.renovatebot.com/renovate-schema.json",
"extends": ["github>owncloud-ci/renovate-presets:docker"]
}

190
LICENSE Normal file
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http://www.apache.org/licenses/
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unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
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Copyright 2021 ownCloud GmbH
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

165
README.md
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@ -1,115 +1,132 @@
retry - The command line retry tool
------------------------------------------
# retry
[![Build Status](https://drone.owncloud.com/api/badges/owncloud-ci/retry/status.svg)](https://drone.owncloud.com/owncloud-ci/retry/)
[![Source: GitHub](https://img.shields.io/badge/source-github-blue.svg?logo=github&logoColor=white)](https://github.com/owncloud-ci/retry)
[![License: Apache-2.0](https://img.shields.io/github/license/owncloud-ci/retry)](https://github.com/owncloud-ci/retry/blob/main/LICENSE)
Retry any shell command with exponential backoff or constant delay.
### Instructions
## Instructions
Install:
retry is a shell script, so drop it somewhere and make sure it's added to your $PATH. Or you can use the following one-liner:
```sh
sudo sh -c "curl https://raw.githubusercontent.com/owncloud-ops/retry/master/retry -o /usr/local/bin/retry && chmod +x /usr/local/bin/retry"
```Shell
curl -SsL -o /usr/local/bin/retry https://raw.githubusercontent.com/owncloud-ops/retry/master/retry && chmod +x /usr/local/bin/retry"
```
### Usage
## Usage
Help:
`retry -?`
```Shell
retry -?
Usage: retry [options] -- execute command
-h, -?, --help
-v, --verbose Verbose output
-t, --tries=# Set max retries: Default 10
-s, --sleep=secs Constant sleep amount (seconds)
-m, --min=secs Exponential Backoff: minimum sleep amount (seconds): Default 0.3
-x, --max=secs Exponential Backoff: maximum sleep amount (seconds): Default 60
-f, --fail="script +cmds" Fail Script: run in case of final failure
Usage: retry [options] -- execute command
-h, -?, --help
-v, --verbose Verbose output
-t, --tries=# Set max retries: Default 10
-s, --sleep=secs Constant sleep amount (seconds)
-m, --min=secs Exponential Backoff: minimum sleep amount (seconds): Default 0.3
-x, --max=secs Exponential Backoff: maximum sleep amount (seconds): Default 60
-f, --fail="script +cmds" Fail Script: run in case of final failure
```
### Examples
## Examples
No problem:
`retry echo u work good`
```Shell
retry echo u work good
u work good
u work good
```
Test functionality:
`retry 'echo "y u no work"; false'`
```Shell
retry 'echo "y u no work"; false'
y u no work
Before retry #1: sleeping 0.3 seconds
y u no work
Before retry #2: sleeping 0.6 seconds
y u no work
Before retry #3: sleeping 1.2 seconds
y u no work
Before retry #4: sleeping 2.4 seconds
y u no work
Before retry #5: sleeping 4.8 seconds
y u no work
Before retry #6: sleeping 9.6 seconds
y u no work
Before retry #7: sleeping 19.2 seconds
y u no work
Before retry #8: sleeping 38.4 seconds
y u no work
Before retry #9: sleeping 60.0 seconds
y u no work
Before retry #10: sleeping 60.0 seconds
y u no work
etc..
y u no work
Before retry #1: sleeping 0.3 seconds
y u no work
Before retry #2: sleeping 0.6 seconds
y u no work
Before retry #3: sleeping 1.2 seconds
y u no work
Before retry #4: sleeping 2.4 seconds
y u no work
Before retry #5: sleeping 4.8 seconds
y u no work
Before retry #6: sleeping 9.6 seconds
y u no work
Before retry #7: sleeping 19.2 seconds
y u no work
Before retry #8: sleeping 38.4 seconds
y u no work
Before retry #9: sleeping 60.0 seconds
y u no work
Before retry #10: sleeping 60.0 seconds
y u no work
etc..
```
Limit retries:
`retry -t 4 'echo "y u no work"; false'`
```Shell
retry -t 4 'echo "y u no work"; false'
y u no work
Before retry #1: sleeping 0.3 seconds
y u no work
Before retry #2: sleeping 0.6 seconds
y u no work
Before retry #3: sleeping 1.2 seconds
y u no work
Before retry #4: sleeping 2.4 seconds
y u no work
Retries exhausted
y u no work
Before retry #1: sleeping 0.3 seconds
y u no work
Before retry #2: sleeping 0.6 seconds
y u no work
Before retry #3: sleeping 1.2 seconds
y u no work
Before retry #4: sleeping 2.4 seconds
y u no work
Retries exhausted
```
Bad command:
`retry poop`
```Shell
retry poop
bash: poop: command not found
bash: poop: command not found
```
Fail command:
`retry -t 3 -f 'echo "oh poopsickles"' 'echo "y u no work"; false'`
```Shell
retry -t 3 -f 'echo "oh poopsickles"' 'echo "y u no work"; false'
y u no work
Before retry #1: sleeping 0.3 seconds
y u no work
Before retry #2: sleeping 0.6 seconds
y u no work
Before retry #3: sleeping 1.2 seconds
y u no work
Retries exhausted, running fail script
oh poopsickles
y u no work
Before retry #1: sleeping 0.3 seconds
y u no work
Before retry #2: sleeping 0.6 seconds
y u no work
Before retry #3: sleeping 1.2 seconds
y u no work
Retries exhausted, running fail script
oh poopsickles
```
Last attempt passed:
`retry -t 3 -- 'if [ $RETRY_ATTEMPT -eq 3 ]; then echo Passed at attempt $RETRY_ATTEMPT; true; else echo Failed at attempt $RETRY_ATTEMPT; false; fi;'`
```Shell
retry -t 3 -- 'if [ $RETRY_ATTEMPT -eq 3 ]; then echo Passed at attempt $RETRY_ATTEMPT; true; else echo Failed at attempt $RETRY_ATTEMPT; false; fi;'
Failed at attempt 0
Before retry #1: sleeping 0.3 seconds
Failed at attempt 1
Before retry #2: sleeping 0.6 seconds
Failed at attempt 2
Before retry #3: sleeping 1.2 seconds
Passed at attempt 3
Failed at attempt 0
Before retry #1: sleeping 0.3 seconds
Failed at attempt 1
Before retry #2: sleeping 0.6 seconds
Failed at attempt 2
Before retry #3: sleeping 1.2 seconds
Passed at attempt 3
```
### License
## License
Apache 2.0 - go nuts
This project is licensed under the Apache 2.0 License - see the [LICENSE](https://github.com/owncloud-ci/retry/blob/master/LICENSE) file for details.

156
retry
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@ -1,4 +1,5 @@
#!/usr/bin/env sh
GETOPT_BIN=$IN_GETOPT_BIN
GETOPT_BIN=${GETOPT_BIN:-getopt}
@ -8,7 +9,7 @@ __sleep_amount() {
else
#TODO: check for awk
#TODO: check if user would rather use one of the other possible dependencies: python, ruby, bc, dc
sleep_time=$(awk "BEGIN {t = $min_sleep * $(( (1<<(attempts -1)) )); print (t > $max_sleep ? $max_sleep : t)}")
sleep_time=$(awk "BEGIN {t = $min_sleep * $(((1 << (_retry_attempts - 1)))); print (t > $max_sleep ? $max_sleep : t)}")
fi
}
@ -17,65 +18,66 @@ __log_out() {
}
# Parameters: max_tries min_sleep max_sleep constant_sleep fail_script EXECUTION_COMMAND
retry()
{
local max_tries="$1"; shift
local min_sleep="$1"; shift
local max_sleep="$1"; shift
local constant_sleep="$1"; shift
local fail_script="$1"; shift
retry() {
_retry_max_tries="$1"
shift
_retry_min_sleep="$1"
shift
_retry_max_sleep="$1"
shift
_retry_constant_sleep="$1"
shift
_retry_fail_script="$1"
shift
if [ -n "$VERBOSE" ]; then
__log_out "Retry Parameters: max_tries=$max_tries min_sleep=$min_sleep max_sleep=$max_sleep constant_sleep=$constant_sleep"
if [ -n "$fail_script" ]; then __log_out "Fail script: $fail_script"; fi
__log_out "Retry Parameters: max_tries=$_retry_max_tries min_sleep=$_retry_min_sleep max_sleep=$_retry_max_sleep constant_sleep=$_retry_constant_sleep"
if [ -n "$_retry_fail_script" ]; then __log_out "Fail script: $_retry_fail_script"; fi
__log_out ""
__log_out "Execution Command: $*"
__log_out ""
fi
local attempts=0
local return_code=1
_retry_attempts=0
_retry_return_code=1
while [ "$return_code" -ne 0 ] && [ "$attempts" -le "$max_tries" ]; do
if [ $attempts -gt 0 ]; then
while [ "$_retry_return_code" -ne 0 ] && [ "$_retry_attempts" -le "$_retry_max_tries" ]; do
if [ $_retry_attempts -gt 0 ]; then
__sleep_amount
__log_out "Before retry #$attempts: sleeping $sleep_time seconds"
__log_out "Before retry #$_retry_attempts: sleeping $sleep_time seconds"
sleep "$sleep_time"
fi
P="$1"
#for param in "${@:2}"; do P="$P '$param'"; done
#TODO: replace single quotes in each arg with '"'"' ?
export RETRY_ATTEMPT=$attempts
export RETRY_ATTEMPT=$_retry_attempts
sh -c "$P"
return_code=$?
#__log_out "Process returned $return_code on attempt $attempts"
if [ $return_code -eq 127 ]; then
_retry_return_code=$?
#__log_out "Process returned $_retry_return_code on attempt $_retry_attempts"
if [ $_retry_return_code -eq 127 ]; then
# command not found
exit $return_code
elif [ $return_code -ne 0 ]; then
attempts=$((attempts +1))
exit $_retry_return_code
elif [ $_retry_return_code -ne 0 ]; then
_retry_attempts=$((_retry_attempts + 1))
fi
done
if [ "$attempts" -gt "$max_tries" ]; then
if [ -n "$fail_script" ]; then
if [ "$_retry_attempts" -gt "$_retry_max_tries" ]; then
if [ -n "$_retry_fail_script" ]; then
__log_out "Retries exhausted, running fail script"
eval "$fail_script"
eval "$_retry_fail_script"
else
__log_out "Retries exhausted"
fi
fi
exit $return_code
exit $_retry_return_code
}
help()
{
local retry=$(basename "$0")
cat <<EOF
Usage: $retry [options] -- execute command
help() {
_help_retry=$(basename "$0")
cat <<EOF
Usage: $_help_retry [options] -- execute command
-h, -?, --help
-v, --verbose Verbose output
-t, --tries=# Set max retries: Default 10
@ -87,26 +89,26 @@ EOF
}
# show help for no arguments if stdin is a terminal
if { [ -z "$1" ] && [ -t 0 ] ; } || [ "$1" = '-h' ] || [ "$1" = '-?' ] || [ "$1" = '--help' ]
then
help
exit 0
if { [ -z "$1" ] && [ -t 0 ]; } || [ "$1" = '-h' ] || [ "$1" = '-?' ] || [ "$1" = '--help' ]; then
help
exit 0
fi
$GETOPT_BIN --test > /dev/null
$GETOPT_BIN --test >/dev/null
if [ $? -ne 4 ]; then
echo "I’m sorry, 'getopt --test' failed in this environment. Please load GNU getopt."
exit 1
echo "I’m sorry, 'getopt --test' failed in this environment. Please load GNU getopt."
exit 1
fi
OPTIONS=vt:s:m:x:f:
LONGOPTIONS=verbose,tries:,sleep:,min:,max:,fail:
PARSED=$($GETOPT_BIN --options="$OPTIONS" --longoptions="$LONGOPTIONS" --name "$0" -- "$@")
# shellcheck disable=SC2181
if [ $? -ne 0 ]; then
# e.g. $? == 1
# then getopt has complained about wrong arguments to stdout
exit 2
# e.g. $? == 1
# then getopt has complained about wrong arguments to stdout
exit 2
fi
# read getopt’s output this way to handle the quoting right:
eval set -- "$PARSED"
@ -119,40 +121,40 @@ fail_script=
# now enjoy the options in order and nicely split until we see --
while true; do
case "$1" in
-v|--verbose)
VERBOSE=true
shift
;;
-t|--tries)
max_tries="$2"
shift 2
;;
-s|--sleep)
constant_sleep="$2"
shift 2
;;
-m|--min)
min_sleep="$2"
shift 2
;;
-x|--max)
max_sleep="$2"
shift 2
;;
-f|--fail)
fail_script="$2"
shift 2
;;
--)
shift
break
;;
*)
echo "Programming error"
exit 3
;;
esac
case "$1" in
-v | --verbose)
VERBOSE=true
shift
;;
-t | --tries)
max_tries="$2"
shift 2
;;
-s | --sleep)
constant_sleep="$2"
shift 2
;;
-m | --min)
min_sleep="$2"
shift 2
;;
-x | --max)
max_sleep="$2"
shift 2
;;
-f | --fail)
fail_script="$2"
shift 2
;;
--)
shift
break
;;
*)
echo "Programming error"
exit 3
;;
esac
done
retry "$max_tries" "$min_sleep" "$max_sleep" "$constant_sleep" "$fail_script" "$@"