https://github.com/remorses/compose-watcher

Watch volumes and restart services in docker compose
https://github.com/remorses/compose-watcher

devtools docker docker-compose nodejs python typescript watch watcher

Last synced: 27 days ago
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Watch volumes and restart services in docker compose

• Host: GitHub
• URL: https://github.com/remorses/compose-watcher
• Owner: remorses
• Created: 2020-03-14T10:16:11.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2020-03-19T14:51:52.000Z (over 4 years ago)
• Last Synced: 2024-05-02T02:10:14.577Z (7 months ago)
• Topics: devtools, docker, docker-compose, nodejs, python, typescript, watch, watcher
• Language: Python
• Homepage:
• Size: 211 KB
• Stars: 25
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# compose-watcher



    



Cli that restarts you docker compose services when a file inside one of its volumes changes.

Useful for faster developement with containers that expose behaviour based on mounted files.

Example usage

-   graphql api restart when schema file changes

-   graphql api mocks based on schema file ([like this one](https://github.com/remorses/graphql-easy-mocks))

-   Every container that generates code and exposes a server based on a config file

-   Nodejs container restarts when the src folder changes, recompiling with tsc

-   [Mongoke](https://github.com/remorses/mongoke) restarts when config schema changes

## Install

```sh

pip3 install compose-watcher

# then you can watch for changes

compose-watcher -f docker-compose.yml

```

## Usage

Use the directories you want to track as service volumes.

Also consider using `init: true` in the compose service definition for faster killing of processes.

To not stop the `docker-compose` commands on other terminals there should be always a running container (this is a strange fact about docker-compose).

```

version: '3'

services:

  api:

    build: .

    command: sh -c 'tsc --incremental && node index.js'

    volumes:

      - ./src:/src

```

Then execute `compose-watcher` to watch changes.

```sh

compose-watcher -f docker-compose.yml --timeout 5

```

TODO add extension filter

## How it works

After running the `compose-watcher` command all the volumes mounted on every service are tracked for change, when a change happens the service where the volume is mounted is restarted toghether with the services in the `depends_on` filed. Then the other services that have the restarted service as a dependency in `depends_on` are restarted too.