Plugin hooks (#1452)

* Refactor session and plugin code
* Add context to job tasks
* Show hooks in plugins page
* Refactor session management

pkg/plugin/config.go

@@ -54,6 +54,9 @@ type Config struct {
 
 	// The task configurations for tasks provided by this plugin.
 	Tasks []*OperationConfig `yaml:"tasks"`
+
+	// The hooks configurations for hooks registered by this plugin.
+	Hooks []*HookConfig `yaml:"hooks"`
 }
 
 func (c Config) getPluginTasks(includePlugin bool) []*models.PluginTask {
@@ -74,6 +77,34 @@ func (c Config) getPluginTasks(includePlugin bool) []*models.PluginTask {
 	return ret
 }
 
+func (c Config) getPluginHooks(includePlugin bool) []*models.PluginHook {
+	var ret []*models.PluginHook
+
+	for _, o := range c.Hooks {
+		hook := &models.PluginHook{
+			Name:        o.Name,
+			Description: &o.Description,
+			Hooks:       convertHooks(o.TriggeredBy),
+		}
+
+		if includePlugin {
+			hook.Plugin = c.toPlugin()
+		}
+		ret = append(ret, hook)
+	}
+
+	return ret
+}
+
+func convertHooks(hooks []HookTriggerEnum) []string {
+	var ret []string
+	for _, h := range hooks {
+		ret = append(ret, h.String())
+	}
+
+	return ret
+}
+
 func (c Config) getName() string {
 	if c.Name != "" {
 		return c.Name
@@ -90,6 +121,7 @@ func (c Config) toPlugin() *models.Plugin {
 		URL:         c.URL,
 		Version:     c.Version,
 		Tasks:       c.getPluginTasks(false),
+		Hooks:       c.getPluginHooks(false),
 	}
 }
 
@@ -103,6 +135,19 @@ func (c Config) getTask(name string) *OperationConfig {
 	return nil
 }
 
+func (c Config) getHooks(hookType HookTriggerEnum) []*HookConfig {
+	var ret []*HookConfig
+	for _, h := range c.Hooks {
+		for _, t := range h.TriggeredBy {
+			if hookType == t {
+				ret = append(ret, h)
+			}
+		}
+	}
+
+	return ret
+}
+
 func (c Config) getConfigPath() string {
 	return filepath.Dir(c.path)
 }
@@ -194,6 +239,13 @@ type OperationConfig struct {
 	DefaultArgs map[string]string `yaml:"defaultArgs"`
 }
 
+type HookConfig struct {
+	OperationConfig `yaml:",inline"`
+
+	// A list of stash operations that will be used to trigger this hook operation.
+	TriggeredBy []HookTriggerEnum `yaml:"triggeredBy"`
+}
+
 func loadPluginFromYAML(reader io.Reader) (*Config, error) {
 	ret := &Config{}