Add installation webhook events

Add support for the new webhooks event for installations.
See: https://developer.github.com/early-access/integrations/webhooks/

Closes #434.

Change-Id: I74d3d50cb6b350322fc4515ad70097f0f70ae478

github/activity_events.go

@@ -45,6 +45,10 @@ func (e *Event) Payload() (payload interface{}) {
 		payload = &ForkEvent{}
 	case "GollumEvent":
 		payload = &GollumEvent{}
+	case "IntegrationInstallationEvent":
+		payload = &IntegrationInstallationEvent{}
+	case "IntegrationInstallationRepositoriesEvent":
+		payload = &IntegrationInstallationRepositoriesEvent{}
 	case "IssueActivityEvent":
 		payload = &IssueActivityEvent{}
 	case "IssueCommentEvent":

github/event_types.go

@@ -146,6 +146,40 @@ type EditChange struct {
 	} `json:"body,omitempty"`
 }
 
+// IntegrationInstallationEvent is triggered when an integration is created or deleted.
+// The Webhook event name is "integration_installation".
+//
+// GitHub docs: https://developer.github.com/early-access/integrations/webhooks/#integrationinstallationevent
+type IntegrationInstallationEvent struct {
+	// The action that was performed. Possible values for an "integration_installation"
+	// event are: "created", "deleted".
+	Action       *string       `json:"action,omitempty"`
+	Installation *Installation `json:"installation,omitempty"`
+	Sender       *User         `json:"sender,omitempty"`
+}
+
+// IntegrationInstallationRepositoriesEvent is triggered when an integration repository
+// is added or removed. The Webhook event name is "integration_installation_repositories".
+//
+// GitHub docs: https://developer.github.com/early-access/integrations/webhooks/#integrationinstallationrepositoriesevent
+type IntegrationInstallationRepositoriesEvent struct {
+	// The action that was performed. Possible values for an "integration_installation_repositories"
+	// event are: "added", "removed".
+	Action              *string       `json:"action,omitempty"`
+	Installation        *Installation `json:"installation,omitempty"`
+	RepositoriesAdded   []*Repository `json:"repositories_added,omitempty"`
+	RepositoriesRemoved []*Repository `json:"repositories_removed,omitempty"`
+	Sender              *User         `json:"sender,omitempty"`
+}
+
+// Installation represents a GitHub integration installation.
+type Installation struct {
+	ID              *int    `json:"id,omitempty"`
+	Account         *User   `json:"account,omitempty"`
+	AccessTokensURL *string `json:"access_tokens_url,omitempty"`
+	RepositoriesURL *string `json:"repositories_url,omitempty"`
+}
+
 // IssueCommentEvent is triggered when an issue comment is created on an issue
 // or pull request.
 // The Webhook event name is "issue_comment".

github/messages.go

@@ -38,27 +38,29 @@ const (
 var (
 	// eventTypeMapping maps webhooks types to their corresponding go-github struct types.
 	eventTypeMapping = map[string]string{
-		"commit_comment":              "CommitCommentEvent",
-		"create":                      "CreateEvent",
-		"delete":                      "DeleteEvent",
-		"deployment":                  "DeploymentEvent",
-		"deployment_status":           "DeploymentStatusEvent",
-		"fork":                        "ForkEvent",
-		"gollum":                      "GollumEvent",
-		"issue_comment":               "IssueCommentEvent",
-		"issues":                      "IssuesEvent",
-		"member":                      "MemberEvent",
-		"membership":                  "MembershipEvent",
-		"page_build":                  "PageBuildEvent",
-		"public":                      "PublicEvent",
-		"pull_request_review_comment": "PullRequestReviewCommentEvent",
-		"pull_request":                "PullRequestEvent",
-		"push":                        "PushEvent",
-		"repository":                  "RepositoryEvent",
-		"release":                     "ReleaseEvent",
-		"status":                      "StatusEvent",
-		"team_add":                    "TeamAddEvent",
-		"watch":                       "WatchEvent",
+		"commit_comment":                        "CommitCommentEvent",
+		"create":                                "CreateEvent",
+		"delete":                                "DeleteEvent",
+		"deployment":                            "DeploymentEvent",
+		"deployment_status":                     "DeploymentStatusEvent",
+		"fork":                                  "ForkEvent",
+		"gollum":                                "GollumEvent",
+		"integration_installation":              "IntegrationInstallationEvent",
+		"integration_installation_repositories": "IntegrationInstallationRepositoriesEvent",
+		"issue_comment":                         "IssueCommentEvent",
+		"issues":                                "IssuesEvent",
+		"member":                                "MemberEvent",
+		"membership":                            "MembershipEvent",
+		"page_build":                            "PageBuildEvent",
+		"public":                                "PublicEvent",
+		"pull_request_review_comment":           "PullRequestReviewCommentEvent",
+		"pull_request":                          "PullRequestEvent",
+		"push":                                  "PushEvent",
+		"repository":                            "RepositoryEvent",
+		"release":                               "ReleaseEvent",
+		"status":                                "StatusEvent",
+		"team_add":                              "TeamAddEvent",
+		"watch":                                 "WatchEvent",
 	}
 )