import { IHookFunctions, IWebhookFunctions, } from 'n8n-core'; import { IDataObject, INodeType, INodeTypeDescription, IWebhookResponseData, NodeApiError, NodeOperationError, } from 'n8n-workflow'; import { gitlabApiRequest, } from './GenericFunctions'; const GITLAB_EVENTS = [ { name: 'Comment', value: 'note', description: 'Triggered when a new comment is made on commits, merge requests, issues, and code snippets', }, { name: 'Confidential Issues', value: 'confidential_issues', description: 'Triggered on confidential issues\' events', }, { name: 'Confidential Comments', value: 'confidential_note', description: 'Triggered when a confidential comment is made', }, { name: 'Deployments', value: 'deployment', description: 'Triggered when a deployment starts/succeeds/fails/is cancelled', }, { name: 'Issue', value: 'issues', description: 'Triggered when a new issue is created or an existing issue was updated/closed/reopened', }, { name: 'Job', value: 'job', description: 'Triggered on status change of a job', }, { name: 'Merge Request', value: 'merge_requests', description: 'Triggered when a new merge request is created, an existing merge request was updated/merged/closed or a commit is added in the source branch', }, { name: 'Pipeline', value: 'pipeline', description: 'Triggered on status change of Pipeline', }, { name: 'Push', value: 'push', description: 'Triggered when you push to the repository except when pushing tags', }, { name: 'Release', value: 'releases', description: 'Release events are triggered when a release is created or updated', }, { name: 'Tag', value: 'tag_push', description: 'Triggered when you create (or delete) tags to the repository', }, { name: 'Wiki Page', value: 'wiki_page', description: 'Triggered when a wiki page is created, updated or deleted', }, ]; export class GitlabTrigger implements INodeType { description: INodeTypeDescription = { displayName: 'GitLab Trigger', name: 'gitlabTrigger', icon: 'file:gitlab.svg', group: ['trigger'], version: 1, subtitle: '={{$parameter["owner"] + "/" + $parameter["repository"] + ": " + $parameter["events"].join(", ")}}', description: 'Starts the workflow when GitLab events occur', defaults: { name: 'Gitlab Trigger', }, inputs: [], outputs: ['main'], credentials: [ { name: 'gitlabApi', required: true, displayOptions: { show: { authentication: [ 'accessToken', ], }, }, }, { name: 'gitlabOAuth2Api', required: true, displayOptions: { show: { authentication: [ 'oAuth2', ], }, }, }, ], webhooks: [ { name: 'default', httpMethod: 'POST', responseMode: 'onReceived', path: 'webhook', }, ], properties: [ { displayName: 'Authentication', name: 'authentication', type: 'options', options: [ { name: 'Access Token', value: 'accessToken', }, { name: 'OAuth2', value: 'oAuth2', }, ], default: 'accessToken', }, { displayName: 'Repository Owner', name: 'owner', type: 'string', default: '', required: true, placeholder: 'n8n-io', description: 'Owner of the repsitory', }, { displayName: 'Repository Name', name: 'repository', type: 'string', default: '', required: true, placeholder: 'n8n', description: 'The name of the repsitory', }, { displayName: 'Events', name: 'events', type: 'multiOptions', options: [ ...GITLAB_EVENTS, { name: '*', value: '*', description: 'Any time any event is triggered (Wildcard Event)', }, ], required: true, default: [], description: 'The events to listen to', }, ], }; // @ts-ignore (because of request) webhookMethods = { default: { async checkExists(this: IHookFunctions): Promise { const webhookData = this.getWorkflowStaticData('node'); if (webhookData.webhookId === undefined) { // No webhook id is set so no webhook can exist return false; } // Webhook got created before so check if it still exists const owner = this.getNodeParameter('owner') as string; const repository = this.getNodeParameter('repository') as string; const path = (`${owner}/${repository}`).replace(/\//g, '%2F'); const endpoint = `/projects/${path}/hooks/${webhookData.webhookId}`; try { await gitlabApiRequest.call(this, 'GET', endpoint, {}); } catch (error) { if (error.httpCode === '404') { // Webhook does not exist delete webhookData.webhookId; delete webhookData.webhookEvents; return false; } // Some error occured throw error; } // If it did not error then the webhook exists return true; }, /** * Gitlab API - Add project hook: * https://docs.gitlab.com/ee/api/projects.html#add-project-hook */ async create(this: IHookFunctions): Promise { const webhookUrl = this.getNodeWebhookUrl('default'); const owner = this.getNodeParameter('owner') as string; const repository = this.getNodeParameter('repository') as string; let eventsArray = this.getNodeParameter('events', []) as string[]; if (eventsArray.includes('*')) { eventsArray = GITLAB_EVENTS.map(e => e.value); } const events: { [key: string]: boolean } = {}; for (const e of eventsArray) { events[`${e}_events`] = true; } // gitlab set the push_events to true when the field it's not sent. // set it to false when it's not picked by the user. if (events['push_events'] === undefined) { events['push_events'] = false; } const path = (`${owner}/${repository}`).replace(/\//g, '%2F'); const endpoint = `/projects/${path}/hooks`; const body = { url: webhookUrl, ...events, enable_ssl_verification: false, }; let responseData; try { responseData = await gitlabApiRequest.call(this, 'POST', endpoint, body); } catch (error) { throw new NodeApiError(this.getNode(), error); } if (responseData.id === undefined) { // Required data is missing so was not successful throw new NodeApiError(this.getNode(), responseData, { message: 'GitLab webhook creation response did not contain the expected data.' }); } const webhookData = this.getWorkflowStaticData('node'); webhookData.webhookId = responseData.id as string; webhookData.webhookEvents = eventsArray as string[]; return true; }, async delete(this: IHookFunctions): Promise { const webhookData = this.getWorkflowStaticData('node'); if (webhookData.webhookId !== undefined) { const owner = this.getNodeParameter('owner') as string; const repository = this.getNodeParameter('repository') as string; const path = (`${owner}/${repository}`).replace(/\//g, '%2F'); const endpoint = `/projects/${path}/hooks/${webhookData.webhookId}`; const body = {}; try { await gitlabApiRequest.call(this, 'DELETE', endpoint, body); } catch (error) { return false; } // Remove from the static workflow data so that it is clear // that no webhooks are registred anymore delete webhookData.webhookId; delete webhookData.webhookEvents; } return true; }, }, }; async webhook(this: IWebhookFunctions): Promise { const bodyData = this.getBodyData(); const returnData: IDataObject[] = []; returnData.push( { body: bodyData, headers: this.getHeaderData(), query: this.getQueryData(), }, ); return { workflowData: [ this.helpers.returnJsonArray(returnData), ], }; } }