Bigquery could not get default credentials - php

Question

I'm trying to setup Google Bigquery with Firebase and am having some issues. I have gcloud installed on my machine (MacOS Sierra) and have google cloud installed via composer on my project.
The following code on my project:
# Includes the autoloader for libraries installed with composer
require __DIR__ . '/vendor/autoload.php';
# Imports the Google Cloud client library
use Google\Cloud\BigQuery\BigQueryClient;
# Your Google Cloud Platform project ID
$projectId = 'hidden here only';
# Instantiates a client
$bigquery = new BigQueryClient([
'projectId' => $projectId
]);
# The name for the new dataset
$datasetName = 'test_dataset';
# Creates the new dataset
$dataset = $bigquery->createDataset($datasetName);
echo 'Dataset ' . $dataset->id() . ' created.';
All I'm trying to do is just create a dataset within bigquery via the library but I'm not able to due to the following error:
Fatal error: Uncaught Google\Cloud\Exception\ServiceException: Could not load the default credentials. Browse to https://developers.google.com/accounts/docs/application-default-credentials for more information in /Applications/MAMP/htdocs/projects/work/bigquery-tests/vendor/google/cloud/src/RequestWrapper.php on line 219
I've tried running gcloud beta auth applications-default login as the example code says to do but after logging in on the browser, the error is still present. Any help would be great, thanks!

Answer 1

You were very close, just you need to setup the service account default credentials see lines with putenv and useApplicationDefaultCredentials(). This is a working code I have using the library https://github.com/google/google-api-php-client You need to obtain your service account key file from the console: https://console.cloud.google.com/iam-admin/serviceaccounts/
composer.json
{
"require": {
"google/cloud": "^0.13.0",
"google/apiclient": "^2.0"
}
}
php file
# Imports the Google Cloud client library
use Google\Cloud\BigQuery\BigQueryClient;
use Google\Cloud\ServiceBuilder;
$query="SELECT repository_url,
repository_has_downloads
FROM [publicdata:samples.github_timeline]
LIMIT 10";
$client = new Google_Client();
putenv('GOOGLE_APPLICATION_CREDENTIALS='.dirname(__FILE__) . '/.ssh/dummyname-7f0004z148e1.json');//this can be created with other ENV mode server side
$client->useApplicationDefaultCredentials();
$builder = new ServiceBuilder([
'projectId' => 'edited',
]);
$bigQuery = $builder->bigQuery();
$job = $bigQuery->runQueryAsJob($query);
$info=$job->info();
// print_r($info);
// exit;
$queryResults = $job->queryResults();
/*$queryResults = $bigQuery->runQuery(
$query,
['useLegacySql' => true]);*/
if ($queryResults->isComplete())
{
$i = 0;
$rows = $queryResults->rows();
foreach ($rows as $row)
{
$i++;
$result[$i] = $row;
}
}
else
{
throw new Exception('The query failed to complete');
}
print_r($result);