feat: [Config] add support for enabling automigration from deprecated Terraform versions (#8855)

* feat: add support for enabling automigration from deprecated Terraform versions
feat: added error code when failing import values from an external source

PiperOrigin-RevId: 854277617

Source-Link: googleapis/googleapis@6145b5f

Source-Link: googleapis/googleapis-gen@25bb3c0
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Author: gcf-owl-bot[bot]

Config/metadata/V1/Config.php

@@ -0,0 +1,73 @@
+<?php
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed 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
+ *
+ *     https://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 CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * GENERATED CODE WARNING
+ * This file was automatically generated - do not edit!
+ */
+
+require_once __DIR__ . '/../../../vendor/autoload.php';
+
+// [START config_v1_generated_Config_GetAutoMigrationConfig_sync]
+use Google\ApiCore\ApiException;
+use Google\Cloud\Config\V1\AutoMigrationConfig;
+use Google\Cloud\Config\V1\Client\ConfigClient;
+use Google\Cloud\Config\V1\GetAutoMigrationConfigRequest;
+
+/**
+ * Get the AutoMigrationConfig for a given project and location.
+ *
+ * @param string $formattedName The name of the AutoMigrationConfig.
+ *                              Format:
+ *                              'projects/{project_id}/locations/{location}/AutoMigrationConfig'. Please see
+ *                              {@see ConfigClient::autoMigrationConfigName()} for help formatting this field.
+ */
+function get_auto_migration_config_sample(string $formattedName): void
+{
+    // Create a client.
+    $configClient = new ConfigClient();
+
+    // Prepare the request message.
+    $request = (new GetAutoMigrationConfigRequest())
+        ->setName($formattedName);
+
+    // Call the API and handle any network failures.
+    try {
+        /** @var AutoMigrationConfig $response */
+        $response = $configClient->getAutoMigrationConfig($request);
+        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
+    } catch (ApiException $ex) {
+        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
+    }
+}
+
+/**
+ * Helper to execute the sample.
+ *
+ * This sample has been automatically generated and should be regarded as a code
+ * template only. It will require modifications to work:
+ *  - It may require correct/in-range values for request initialization.
+ *  - It may require specifying regional endpoints when creating the service client,
+ *    please see the apiEndpoint client configuration option for more details.
+ */
+function callSample(): void
+{
+    $formattedName = ConfigClient::autoMigrationConfigName('[PROJECT]', '[LOCATION]');
+
+    get_auto_migration_config_sample($formattedName);
+}
+// [END config_v1_generated_Config_GetAutoMigrationConfig_sync]

Config/samples/V1/ConfigClient/get_auto_migration_config.php

@@ -0,0 +1,71 @@
+<?php
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed 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
+ *
+ *     https://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 CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * GENERATED CODE WARNING
+ * This file was automatically generated - do not edit!
+ */
+
+require_once __DIR__ . '/../../../vendor/autoload.php';
+
+// [START config_v1_generated_Config_UpdateAutoMigrationConfig_sync]
+use Google\ApiCore\ApiException;
+use Google\ApiCore\OperationResponse;
+use Google\Cloud\Config\V1\AutoMigrationConfig;
+use Google\Cloud\Config\V1\Client\ConfigClient;
+use Google\Cloud\Config\V1\UpdateAutoMigrationConfigRequest;
+use Google\Rpc\Status;
+
+/**
+ * Updates the AutoMigrationConfig for a given project and location.
+ *
+ * This sample has been automatically generated and should be regarded as a code
+ * template only. It will require modifications to work:
+ *  - It may require correct/in-range values for request initialization.
+ *  - It may require specifying regional endpoints when creating the service client,
+ *    please see the apiEndpoint client configuration option for more details.
+ */
+function update_auto_migration_config_sample(): void
+{
+    // Create a client.
+    $configClient = new ConfigClient();
+
+    // Prepare the request message.
+    $autoMigrationConfig = new AutoMigrationConfig();
+    $request = (new UpdateAutoMigrationConfigRequest())
+        ->setAutoMigrationConfig($autoMigrationConfig);
+
+    // Call the API and handle any network failures.
+    try {
+        /** @var OperationResponse $response */
+        $response = $configClient->updateAutoMigrationConfig($request);
+        $response->pollUntilComplete();
+
+        if ($response->operationSucceeded()) {
+            /** @var AutoMigrationConfig $result */
+            $result = $response->getResult();
+            printf('Operation successful with response data: %s' . PHP_EOL, $result->serializeToJsonString());
+        } else {
+            /** @var Status $error */
+            $error = $response->getError();
+            printf('Operation failed with error data: %s' . PHP_EOL, $error->serializeToJsonString());
+        }
+    } catch (ApiException $ex) {
+        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
+    }
+}
+// [END config_v1_generated_Config_UpdateAutoMigrationConfig_sync]