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<?php

/**

* Copyright 2018 Google Inc.

*

* 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

*

* 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 CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

namespace Google\Cloud\Samples\Iot;

# [START iot_patch_es]

use Google\Cloud\Iot\V1\DeviceManagerClient;

use Google\Cloud\Iot\V1\Device;

use Google\Cloud\Iot\V1\DeviceCredential;

use Google\Cloud\Iot\V1\PublicKeyCredential;

use Google\Cloud\Iot\V1\PublicKeyFormat;

use Google\Protobuf\FieldMask;

/**

* Patch the device to add an ES256 public key to the device.

*

* @param string $registryId IOT Device Registry ID

* @param string $deviceId IOT Device ID

* @param string $publicKeyFile Path to public ES256 key file.

* @param string $projectId Google Cloud project ID

* @param string $location (Optional) Google Cloud region

*/

function patch_es(

$registryId,

$deviceId,

$publicKeyFile,

$projectId,

$location = 'us-central1'

) {

print('Patch device with ES256 certificate' . PHP_EOL);

// Instantiate a client.

$deviceManager = new DeviceManagerClient();

$deviceName = $deviceManager->deviceName($projectId, $location, $registryId, $deviceId);

$publicKey = (new PublicKeyCredential())

->setFormat(PublicKeyFormat::ES256_PEM)

->setKey(file_get_contents($publicKeyFile));

$credential = (new DeviceCredential())

->setPublicKey($publicKey);

$device = (new Device())

->setName($deviceName)

->setCredentials([$credential]);

$updateMask = (new FieldMask())

->setPaths(['credentials']);

$device = $deviceManager->updateDevice($device, $updateMask);

printf('Updated device %s' . PHP_EOL, $device->getName());

}

# [END iot_patch_es]