feat: init db wrapper

src/db-wrapper.js

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2023 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+import createDynamoDBService from './db.js';
+import serviceWrap from './service-wrap.js';
+
+function wrapper(func) {
+  return (params) => serviceWrap(
+    func,
+    params,
+    '__ow_dynamodb',
+    createDynamoDBService,
+  );
+}
+const dynamoDBWrapper = wrapper;
+export default { dynamoDBWrapper };

src/db.js

@@ -16,8 +16,8 @@ import { log } from './util.js';
 const TABLE_SITES = 'spacecat-site';
 const TABLE_AUDITS = 'spacecat-audit-index';
 
-function DB(config) {
-  const client = new DynamoDBClient({ region: config.region });
+function DB(params) {
+  const client = new DynamoDBClient({ region: params.region });
   const docClient = DynamoDBDocumentClient.from(client);
 
   /**
@@ -48,10 +48,10 @@ function DB(config) {
 
     const newAudit = {
       id: uuid,
-      siteId: site.id,
+      siteId: `${site.domain}/${site.path}`,
       audit_date: now,
       type: 'psi',
-      is_live: site.isLive,
+      is_live: false,
       content_publication_date: '',
       git_hashes: [],
       tag_manager: '',
@@ -100,11 +100,12 @@ function DB(config) {
   }
   /**
      * Fetches a site by its ID and gets its latest audit.
-     * @param {string} siteId - The ID of the site to fetch.
+     * @param {string} domain - The domain of the site to fetch.
+     * @param {string} path - The path of the site to fetch.
      * @returns {Promise<object>} Site document with its latest audit.
      */
   async function getSite(domain, path) {
-    const params = {
+    const commandParams = {
       TableName: TABLE_SITES, // Replace with your table name
       Key: {
         Domain: { S: domain }, // Partition key
@@ -113,7 +114,7 @@ function DB(config) {
     };
 
     try {
-      const command = new GetItemCommand(params);
+      const command = new GetItemCommand(commandParams);
       const response = await client.send(command);
       const item = response.Item;
       if (item) {
@@ -135,4 +136,8 @@ function DB(config) {
   };
 }
 
-export default DB;
+const createDynamoDBService = (params) => Object.freeze({
+  getInstance: () => DB(params),
+});
+
+export default { createDynamoDBService };

src/index.js

@@ -14,7 +14,7 @@ import wrap from '@adobe/helix-shared-wrap';
 import { logger } from '@adobe/helix-universal-logger';
 import { helixStatus } from '@adobe/helix-status';
 import SQSQueue from './sqs-queue.js';
-import DB from './db.js'; // Assuming the exported content of './db' is default exported
+import { dynamoDBWrapper } from './db-wrapper.js'; // Assuming the exported content of './db' is default exported
 import PSIClient from './psi-client.js'; // Assuming the exported content of './psi-client' is default exported
 
 /**
@@ -24,9 +24,9 @@ import PSIClient from './psi-client.js'; // Assuming the exported content of './
  * @returns {Response} a response
  */
 async function run(request, context) {
-  const db = DB({
-    region: process.env.REGION,
-  });
+  const {
+    __ow_dynamodb: db,
+  } = context;
   const sqsQueue = SQSQueue();
   const { message } = JSON.parse(context.invocation.event.Records[0].body);
 
@@ -36,11 +36,8 @@ async function run(request, context) {
   });
 
   const site = {
-    id: message.siteId,
-    githubURL: message.githubURL,
     domain: message.domain,
     path: message.path,
-    isLive: message.isLive,
   };
   const auditResult = await psiClient.runAudit(`https://${site.domain}/${site.path}`);
   const auditResultMin = await db.saveAuditIndex(site, auditResult);
@@ -50,6 +47,7 @@ async function run(request, context) {
 
 export const main = wrap(run)
   .with(helixStatus)
+  .with(dynamoDBWrapper)
   .with(logger.trace)
   .with(logger)
   .with(secrets);

src/service-wrap.js

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2023 Adobe. All rights reserved.
+ * This file is licensed to you under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
+ * OF ANY KIND, either express or implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+const serviceWrap = (
+  lambdaFn,
+  lambdaParams,
+  paramName,
+  factoryFn,
+) => {
+  if (!lambdaParams[paramName]) {
+    const service = factoryFn(lambdaParams);
+
+    // pass params by reference and not value so later modifications
+    // of the params are accessible to the wrap
+    // eslint-disable-next-line no-param-reassign
+    lambdaParams[paramName] = service.getInstance(lambdaParams);
+  }
+  return lambdaFn(lambdaParams);
+};
+
+module.exports = serviceWrap;