add: stand configs

PROD_STAND/POSTGRES/testnode/src/datasources/README.md

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+# Datasources
+
+This directory contains config for datasources used by this app.

PROD_STAND/POSTGRES/testnode/src/datasources/githubds.datasource.ts

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+import {inject, lifeCycleObserver, LifeCycleObserver} from '@loopback/core';
+import {juggler} from '@loopback/repository';
+
+const config = {
+  name: 'githubds',
+  connector: 'rest',
+  baseURL: 'https://api.github.ibm.com',
+  crud: false,
+  options: {
+    headers: {
+      accept: 'application/json',
+      Authorization: process.env.TOKEN,
+      'User-Agent': 'loopback4-example-github',
+      'X-RateLimit-Limit': 5000,
+      'content-type': 'application/json'
+    }
+  },
+  operations: [
+    {
+      template: {
+        method: 'GET',
+        fullResponse: true,
+        url: 'https://api.github.com/search/issues?q=repo:{repo}+label:"{label}"'
+      },
+      functions: {
+        getIssuesByLabel: ['repo','label']
+      }
+    }, {
+      template: {
+        method: 'GET',
+        fullResponse: true,
+        url: '{url}'
+      },
+      functions: {
+        getIssuesByURL: ['url']
+      }
+    }, {
+      template: {
+        method: 'GET',
+        fullResponse: true,
+        url: 'https://api.github.com/search/issues?q=repo:{repo}+{querystring}'
+      },
+      functions: {
+        getIssuesWithQueryString: ['repo','querystring']
+      }
+    }
+  ]
+};
+
+// Observe application's life cycle to disconnect the datasource when
+// application is stopped. This allows the application to be shut down
+// gracefully. The `stop()` method is inherited from `juggler.DataSource`.
+// Learn more at https://loopback.io/doc/en/lb4/Life-cycle.html
+@lifeCycleObserver('datasource')
+export class GithubdsDataSource extends juggler.DataSource
+  implements LifeCycleObserver {
+  static dataSourceName = 'githubds';
+  static readonly defaultConfig = config;
+
+  constructor(
+    @inject('datasources.config.githubds', {optional: true})
+    dsConfig: object = config,
+  ) {
+    super(dsConfig);
+  }
+}

PROD_STAND/POSTGRES/testnode/src/datasources/index.ts

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+export * from './githubds.datasource';