Module: PatriotGCP::Ext::BigQuery

Included in:
Command::LoadToBigQueryCommand
Defined in:
lib/patriot_gcp/ext/bigquery.rb

Defined Under Namespace

Classes: BigQueryException

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(cls) ⇒ Object 



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# File 'lib/patriot_gcp/ext/bigquery.rb', line 9

def self.included(cls)
  cls.send(:include, Patriot::Util::System)
end

Instance Method Details

#_bq_load(filename, project_id, dataset_id, table_id, auth_client, api_client, schema, options, polling_interval) ⇒ Object 



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# File 'lib/patriot_gcp/ext/bigquery.rb', line 92

def _bq_load(filename,
             project_id,
             dataset_id,
             table_id,
             auth_client,
             api_client,
             schema,
             options,
             polling_interval)

  bq_client = api_client.discovered_api('bigquery', 'v2')
  body = _make_body(project_id, dataset_id, table_id, schema, options)
  media = Google::APIClient::UploadIO.new(filename, "application/octet-stream")

  result = api_client.execute(
    :api_method => bq_client.jobs.insert,
    :parameters => {
      'projectId' => project_id,
      'uploadType' => 'multipart'
    },
    :body_object => body,
    :authorization => auth_client,
    :media => media
  )

  begin
    job_id = JSON.parse(result.response.body)['jobReference']['jobId']
  rescue
    raise BigQueryException, "failed to register job: #{result.response.body}"
  end

  return _poll(bq_client,
               api_client,
               auth_client,
               project_id,
               job_id,
               polling_interval)
end

#_get_api_client ⇒ Object 



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# File 'lib/patriot_gcp/ext/bigquery.rb', line 28

def _get_api_client()
  Google::APIClient.new(
      :application_name => VERSION::PROJECT_NAME,
      :application_version => VERSION::VERSION)
end

#_get_auth_client(p12_key, key_pass, email) ⇒ Object 



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# File 'lib/patriot_gcp/ext/bigquery.rb', line 15

def _get_auth_client(p12_key, key_pass, email)
  key = Google::APIClient::KeyUtils.load_from_pkcs12(p12_key, key_pass)
  auth_client = Signet::OAuth2::Client.new(
      :token_credential_uri => 'https://accounts.google.com/o/oauth2/token',
      :audience => 'https://accounts.google.com/o/oauth2/token',
      :scope => 'https://www.googleapis.com/auth/bigquery',
      :issuer => email,
      :signing_key => key)
  auth_client.fetch_access_token!
  return auth_client
end

#_make_body(project_id, dataset_id, table_id, schema, options) ⇒ Object 



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# File 'lib/patriot_gcp/ext/bigquery.rb', line 35

def _make_body(project_id, dataset_id, table_id, schema, options)
  body = {
    'configuration' => {
      'load' => {
        'schema' => schema,
        'destinationTable' => {
          'projectId' => project_id,
          'datasetId' => dataset_id,
          'tableId'   => table_id
        }
      }
    }
  }
  if options
    options.each{|key, value|
      body['configuration']['load'][key] = value
    }
  end

  return body
end

#_poll(bq_client, api_client, auth_client, project_id, job_id, polling_interval) ⇒ Object

Raises:



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# File 'lib/patriot_gcp/ext/bigquery.rb', line 58

def _poll(bq_client,
          api_client,
          auth_client,
          project_id,
          job_id,
          polling_interval)

  polling_interval.times{
    response = JSON.parse(api_client.execute(
                          :api_method => bq_client.jobs.get,
                          :parameters => {
                              'jobId' => job_id,
                              'projectId' => project_id
                          },
                          :headers => {'Content-Type' => 'application/json; charset=UTF-8'},
                          :authorization => auth_client
                      ).response.body)
    state = response["status"]["state"]

    if state == 'DONE'
      if response["status"]["errors"]
        raise BigQueryException, "upload failed: #{response['status']['errors']}"
      else
        return response["statistics"]
      end
    end

    sleep 60
  }

  raise BigQueryException,"registered job didn't finish within: #{polling_interval} mins. please check if it will finish later on. jobId: #{job_id}"
end

#bq_load(filename, p12_key, key_pass, email, project_id, dataset_id, table_id, schema, options = nil, polling_interval = nil) ⇒ Object 



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# File 'lib/patriot_gcp/ext/bigquery.rb', line 132

def bq_load(filename,
            p12_key,
            key_pass,
            email,
            project_id,
            dataset_id,
            table_id,
            schema,
            options=nil,
            polling_interval=nil)

  options ||= {}
  polling_interval ||= 60

  api_client  = _get_api_client()
  auth_client = _get_auth_client(p12_key, key_pass, email)

  return _bq_load(filename,
                  project_id,
                  dataset_id,
                  table_id,
                  auth_client,
                  api_client,
                  schema,
                  options,
                  polling_interval)
end