https://github.com/openpitrix/watcher

A simple service to trigger a handler when WATCHER_WATCHED_FILE is updated.
https://github.com/openpitrix/watcher

Last synced: 5 months ago
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A simple service to trigger a handler when WATCHER_WATCHED_FILE is updated.

• Host: GitHub
• URL: https://github.com/openpitrix/watcher
• Owner: openpitrix
• Created: 2019-04-12T03:11:13.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2019-04-17T11:07:42.000Z (about 7 years ago)
• Last Synced: 2024-06-20T13:36:20.982Z (almost 2 years ago)
• Language: Go
• Size: 202 KB
• Stars: 0
• Watchers: 13
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          

# Watcher

[![Build Status](https://travis-ci.org/openpitrix/watcher.svg)](https://travis-ci.org/openpitrix/watcher)

[![Docker Build Status](https://img.shields.io/docker/build/openpitrix/watcher.svg)](https://hub.docker.com/r/openpitrix/watcher/)

[![License](http://img.shields.io/badge/license-apache%20v2-blue.svg)](https://github.com/openpitrix/openpitrix/blob/master/LICENSE)

----

**watcher** is a simple service to trigger a handler when **WATCHER_WATCHED_FILE** is updated.

In openpitrix, the global config is load into ConfigMap when depolied by helm or kubernetes; watcher watches mounted volume dirs from ConfigMap and notifies the target process(UpdateOpenPitrixEtcd) that the config map has been changed.

It currently only supports handler UpdateOpenPitrixEtcd.

----

## Usage

#### Local

```$xslt

$ govendor sync

$ export WATCHER_HANDLER=UpdateOpenPitrixEtcd \

  WATCHER_WATCHED_FILE=./test/global_config.yaml \

  WATCHER_DURATION=10 \

  WATCHER_LOG_LEVEL=debug \

  WATCHER_ETCD_PREFIX=openpitrix \

  WATCHER_ETCD_ENDPOINTS=127.0.0.1:2379 \

  IGNORE_KEYS='{"runtime": true, "cluster": {"registry_mirror": true}}'

$ cd watcher

$ go run cmd/watch/main.go

```

#### Docker

```$xslt

docker run -it -d \

       -v ${CONFIG_DIR}:/opt/config.yaml \

       -e WATCHER_HANDLER=UpdateOpenPitrixEtcd \

       -e WATCHER_WATCHED_FILE=/opt/config.yaml \

       -e WATCHER_DURATION=10 \

       -e WATCHER_LOG_LEVEL=debug \

       -e WATCHER_ETCD_PREFIX=openpitrix \

       -e WATCHER_ETCD_ENDPOINTS=127.0.0.1:2379 \

       -e IGNORE_KEYS='{"runtime": true, "cluster": {"registry_mirror": true}}' \

       --name watcher openpitrix.io/watcher

```

#### Helm

refrence: https://github.com/openpitrix/helm-chart