feat: Support Private CA for server certificates.

test: Integration test for Customer Private CA CAS instance.

Author: hessjcg

.github/workflows/tests.yml

@@ -161,6 +161,8 @@ jobs:
             POSTGRES_DB:${{ vars.GOOGLE_CLOUD_PROJECT }}/POSTGRES_DB
             POSTGRES_CAS_CONNECTION_NAME:${{ vars.GOOGLE_CLOUD_PROJECT }}/POSTGRES_CAS_CONNECTION_NAME
             POSTGRES_CAS_PASS:${{ vars.GOOGLE_CLOUD_PROJECT }}/POSTGRES_CAS_PASS
+            POSTGRES_CUSTOMER_CAS_CONNECTION_NAME:${{ vars.GOOGLE_CLOUD_PROJECT }}/POSTGRES_CUSTOMER_CAS_CONNECTION_NAME
+            POSTGRES_CUSTOMER_CAS_PASS:${{ vars.GOOGLE_CLOUD_PROJECT }}/POSTGRES_CUSTOMER_CAS_PASS
             SQLSERVER_CONNECTION_NAME:${{ vars.GOOGLE_CLOUD_PROJECT }}/SQLSERVER_CONNECTION_NAME
             SQLSERVER_USER:${{ vars.GOOGLE_CLOUD_PROJECT }}/SQLSERVER_USER
             SQLSERVER_PASS:${{ vars.GOOGLE_CLOUD_PROJECT }}/SQLSERVER_PASS
@@ -188,6 +190,8 @@ jobs:
           POSTGRES_DB: "${{ steps.secrets.outputs.POSTGRES_DB }}"
           POSTGRES_CAS_CONNECTION_NAME: "${{ steps.secrets.outputs.POSTGRES_CAS_CONNECTION_NAME }}"
           POSTGRES_CAS_PASS: "${{ steps.secrets.outputs.POSTGRES_CAS_PASS }}"
+          POSTGRES_CUSTOMER_CAS_CONNECTION_NAME: "${{ steps.secrets.outputs.POSTGRES_CUSTOMER_CAS_CONNECTION_NAME }}"
+          POSTGRES_CUSTOMER_CAS_PASS: "${{ steps.secrets.outputs.POSTGRES_CUSTOMER_CAS_PASS }}"
           SQLSERVER_CONNECTION_NAME: "${{ steps.secrets.outputs.SQLSERVER_CONNECTION_NAME }}"
           SQLSERVER_USER: "${{ steps.secrets.outputs.SQLSERVER_USER }}"
           SQLSERVER_PASS: "${{ steps.secrets.outputs.SQLSERVER_PASS }}"

src/socket.ts

@@ -36,7 +36,10 @@ export function validateCertificate(
   dnsName: string
 ) {
   return (hostname: string, cert: tls.PeerCertificate): Error | undefined => {
-    if (serverCaMode === 'GOOGLE_MANAGED_CAS_CA') {
+    if (
+      serverCaMode === 'GOOGLE_MANAGED_CAS_CA' ||
+      serverCaMode === 'CUSTOMER_MANAGED_CAS_CA'
+    ) {
       return tls.checkServerIdentity(dnsName, cert);
     }
     if (!cert || !cert.subject) {

system-test/pg-connect.ts

@@ -93,3 +93,30 @@ t.test(
     connector.close();
   }
 );
+
+
+t.test(
+  'open connection to Customer Private CAS-based CA instance and retrieves standard pg tables',
+  async t => {
+    const connector = new Connector();
+    const clientOpts = await connector.getOptions({
+      instanceConnectionName: String(process.env.POSTGRES_CUSTOMER_CAS_CONNECTION_NAME),
+    });
+    const client = new Client({
+      ...clientOpts,
+      user: String(process.env.POSTGRES_USER),
+      password: String(process.env.POSTGRES_CUSTOMER_CAS_PASS),
+      database: String(process.env.POSTGRES_DB),
+    });
+    client.connect();
+
+    const {
+      rows: [result],
+    } = await client.query('SELECT NOW();');
+    const returnedDate = result['now'];
+    t.ok(returnedDate.getTime(), 'should have valid returned date object');
+
+    await client.end();
+    connector.close();
+  }
+);