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Intro to Gotify Plugins

Plugins are currently only supported on Linux and MacOS due to a current limitation of golang.

Description

This documentation is generally designed for plugin developers. If you just wanted to use an existing plugin, you would need to refer to the documentation from the plugin maintainer.

Gotify provides built-in plugin functionality built on top of the go plugin system. It is built for extending Gotify functionality.

Features

• One plugin instance per user
• Registering custom http handlers
• Sending messages as an application
• YAML-based configuration system on the WebUI
• Persistent storage per plugin user instance
• Displaying dynamically generated instructions to users

Applications

• Receiving webhooks from GitHub, Travis CI, etc.
• Polling new feeds through RSS, Atom, or other sources.
• Extending the WebUI functionality.
• Delivering alarm notifications.

Get Started

First let's see a minimal example of gotify plugin, you can copy this boilerplate code to bootstrap your own plugin:

package main

import (
    "github.com/gotify/plugin-api"
)

// GetGotifyPluginInfo returns gotify plugin info
func GetGotifyPluginInfo() plugin.Info {
    return plugin.Info{
        Name:       "minimal plugin",
        ModulePath: "github.com/gotify/server/example/minimal",
    }
}

// Plugin is plugin instance
type Plugin struct{}

// Enable implements plugin.Plugin
func (c *Plugin) Enable() error {
    return nil
}

// Disable implements plugin.Plugin
func (c *Plugin) Disable() error {
    return nil
}

// NewGotifyPluginInstance creates a plugin instance for a user context.
func NewGotifyPluginInstance(ctx plugin.UserContext) plugin.Plugin {
    return &Plugin{}
}

func main() {
    panic("this should be built as go plugin")
}

This program exports two functions: GetGotifyPluginInfo and NewGotifyPluginInstance, gotify will use these to obtain the plugin metadata and create plugin instances for each user.

The GetGotifyPluginInfo must return a plugin.Info containing descriptive info of the current plugin, all fields are optional except ModulePath(the module path of this plugin), which is used to distinguish different plugins.

The NewGotifyPluginInstance is called with a plugin.UserContext for each user at startup and every time a new user is added, the plugin must return a plugin instance that satisfies plugin.Plugin interface. More functionalities can be implemented by implementing more interfaces in the plugin-api package.