Add message response

packages/server/src/integrations/index.ts

@@ -122,7 +122,7 @@ export async function getIntegration(integration: SourceName) {
 }
 
 const VALIDATORS: Partial<
-  Record<SourceName, (config: any) => Promise<boolean>>
+  Record<SourceName, (config: any) => Promise<boolean | { error: string }>>
 > = {
   [SourceName.POSTGRES]: postgres.validateConnection,
 }

packages/server/src/integrations/postgres.ts

@@ -335,8 +335,8 @@ async function validateConnection(config: PostgresConfig) {
   try {
     await integration.openConnection()
     return true
-  } catch {
-    return false
+  } catch (e: any) {
+    return { error: e.message as string }
   } finally {
     await integration.closeConnection()
   }

packages/server/src/sdk/tests/datasources/validators.spec.ts

@@ -37,7 +37,6 @@ describe("datasource validators", () => {
     })
 
     it("test invalid connection string", async () => {
-      try {
       const result = await validator({
         host,
         port,
@@ -49,10 +48,9 @@ describe("datasource validators", () => {
         rejectUnauthorized: false,
         ca: false,
       })
-        expect(result).toBeFalsy()
-      } catch (e) {
-        console.error(e)
-      }
+      expect(result).toEqual({
+        error: 'password authentication failed for user "wrong"',
+      })
     })
   })
 })