mirror of
https://github.com/ncarlier/webhookd.git
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152 lines
3.2 KiB
Markdown
152 lines
3.2 KiB
Markdown
# webhookd
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[](https://hub.docker.com/r/ncarlier/webhookd/)
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[](https://hub.docker.com/r/ncarlier/webhookd/)
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A very simple webhook server to launch shell scripts.
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## Installation
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Run the following command:
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```bash
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$ go get -v github.com/ncarlier/webhookd/webhookd
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```
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**Or** download the binary regarding your architecture:
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```bash
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$ sudo curl -s https://raw.githubusercontent.com/ncarlier/webhookd/master/install.sh | sh
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```
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**Or** use Docker:
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```bash
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$ docker run -d --name=webhookd \
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--env-file .env \
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-v ${PWD}/scripts:/var/opt/webhookd/scripts \
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-p 8080:8080 \
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ncarlier/webhookd webhookd
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```
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Check the provided environment file [.env](.env) for details.
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> Note that this image extends `docker:dind` Docker image. Therefore you are
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> able to interact with a Docker daemon with yours shell scripts.
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## Usage
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### Directory structure
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Webhooks are simple scripts dispatched into a directory structure.
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By default inside the `./scripts` directory.
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You can override the default using the `APP_SCRIPTS_DIR` environment variable.
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*Example:*
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```
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/scripts
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|--> /github
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|--> /build.sh
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|--> /deploy.sh
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|--> /ping.sh
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|--> ...
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```
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### Webhook URL
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The directory structure define the webhook URL.
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The Webhook can only be call with HTTP POST verb.
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If the script exists, the HTTP response will be a `text/event-stream` content
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type (Server-sent events).
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*Example:*
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The script: `./scripts/foo/bar.sh`
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```bash
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#!/bin/bash
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echo "foo foo foo"
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echo "bar bar bar"
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```
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```bash
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$ curl -XPOST http://localhost/foo/bar
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data: Hook work request "foo/bar" queued...
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data: Running foo/bar script...
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data: foo foo foo
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data: bar bar bar
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data: done
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```
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### Webhook parameters
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You can add query parameters to the webhook URL.
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Those parameters will be available as environment variables into the shell
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script.
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You can also send a payload (text/plain or application/json) as request body.
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This payload will be transmit to the shell script as first parameter.
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*Example:*
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The script:
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```bash
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#!/bin/bash
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echo "Environment parameters: foo=$foo"
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echo "Script parameters: $1"
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```
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```bash
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$ curl --data @test.json http://localhost/echo?foo=bar
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data: Hook work request "echo" queued...
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data: Running echo script...
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data: Environment parameters: foo=bar
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data: Script parameters: {"foo": "bar"}
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data: done
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```
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### Notifications
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The script's output is collected and stored into a log file (configured by the
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`APP_WORKING_DIR` environment variable).
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Once the script executed, you can send the result and this log file to a
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notification channel. Currently only two channels are supported: Email and HTTP.
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#### HTTP notification
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HTTP notification configuration:
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- **APP_NOTIFIER**=http
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- **APP_NOTIFIER_FROM**=webhookd <noreply@nunux.org>
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- **APP_NOTIFIER_TO**=hostmaster@nunux.org
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- **APP_HTTP_NOTIFIER_URL**=http://requestb.in/v9b229v9
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> Note that the HTTP notification is compatible with
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[Mailgun](https://mailgun.com) API.
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#### Email notification
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SMTP notification configuration:
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- **APP_NOTIFIER**=smtp
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- **APP_SMTP_NOTIFIER_HOST**=localhost:25
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The log file will be sent as an GZIP attachment.
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---
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