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// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
package plugin
import (
"github.com/hashicorp/go-plugin"
)
// Starts the serving of a Mattermost plugin over net/rpc. gRPC is not yet supported.
//
// Call this when your plugin is ready to start.
func ClientMain(pluginImplementation interface{}) {
if impl, ok := pluginImplementation.(interface {
SetAPI(api API)
SetSelfRef(ref interface{})
}); !ok {
panic("Plugin implementation given must embed plugin.MattermostPlugin")
} else {
impl.SetAPI(nil)
impl.SetSelfRef(pluginImplementation)
}
pluginMap := map[string]plugin.Plugin{
"hooks": &hooksPlugin{hooks: pluginImplementation},
}
plugin.Serve(&plugin.ServeConfig{
HandshakeConfig: handshake,
Plugins: pluginMap,
})
}
type MattermostPlugin struct {
// API exposes the plugin api, and becomes available just prior to the OnActive hook.
API API
selfRef interface{} // This is so we can unmarshal into our parent
}
// SetAPI persists the given API interface to the plugin. It is invoked just prior to the
// OnActivate hook, exposing the API for use by the plugin.
func (p *MattermostPlugin) SetAPI(api API) {
p.API = api
}
// SetSelfRef is called by ClientMain to maintain a pointer to the plugin interface originally
// registered. This allows for the default implementation of OnConfigurationChange.
func (p *MattermostPlugin) SetSelfRef(ref interface{}) {
p.selfRef = ref
}
// OnConfigurationChange provides a default implementation of this hook event that unmarshals the
// plugin configuration directly onto the plugin struct.
//
// Feel free to implement your own version of OnConfigurationChange if you need more advanced
// configuration handling.
func (p *MattermostPlugin) OnConfigurationChange() error {
if p.selfRef != nil {
return p.API.LoadPluginConfiguration(p.selfRef)
}
return nil
}
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