Class: Embulk::Output::Bigquery::BigqueryClient

Inherits:
GoogleClient
  • Object
show all
Defined in:
lib/embulk/output/bigquery/bigquery_client.rb

Constant Summary collapse

BIGQUERY_TABLE_OPERATION_INTERVAL =

cloud.google.com/bigquery/quotas

2

Instance Method Summary collapse

Methods inherited from GoogleClient

#client, #with_network_retry

Constructor Details

#initialize(task, schema, fields = nil) ⇒ BigqueryClient

Returns a new instance of BigqueryClient.



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 13

def initialize(task, schema, fields = nil)
  scope = "https://www.googleapis.com/auth/bigquery"
  client_class = Google::Apis::BigqueryV2::BigqueryService
  super(task, scope, client_class)

  @schema = schema
  reset_fields(fields) if fields
  @project = @task['project']
  @destination_project = @task['destination_project']
  @dataset = @task['dataset']
  @location = @task['location']
  @location_for_log = @location.nil? ? 'us/eu' : @location

  @task['source_format'] ||= 'CSV'
  @task['max_bad_records'] ||= 0
  @task['field_delimiter'] ||= ','
  @task['source_format'] == 'CSV' ? @task['field_delimiter'] : nil
  @task['encoding'] ||= 'UTF-8'
  @task['ignore_unknown_values'] = false if @task['ignore_unknown_values'].nil?
  @task['allow_quoted_newlines'] = false if @task['allow_quoted_newlines'].nil?
end

Instance Method Details

#copy(source_table, destination_table, destination_dataset = nil, write_disposition: 'WRITE_TRUNCATE') ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 241

def copy(source_table, destination_table, destination_dataset = nil, write_disposition: 'WRITE_TRUNCATE')
  with_job_retry do
    begin
      destination_dataset ||= @dataset
      job_id = "embulk_copy_job_#{SecureRandom.uuid}"

      Embulk.logger.info {
        "embulk-output-bigquery: Copy job starting... job_id:[#{job_id}] " \
        "#{@destination_project}:#{@dataset}.#{source_table} => #{@destination_project}:#{destination_dataset}.#{destination_table}"
      }

      body = {
        job_reference: {
          project_id: @project,
          job_id: job_id,
        },
        configuration: {
          copy: {
            create_deposition: 'CREATE_IF_NEEDED',
            write_disposition: write_disposition,
            source_table: {
              project_id: @destination_project,
              dataset_id: @dataset,
              table_id: source_table,
            },
            destination_table: {
              project_id: @destination_project,
              dataset_id: destination_dataset,
              table_id: destination_table,
            },
          }
        }
      }

      if @location
        body[:job_reference][:location] = @location
      end

      opts = {}
      Embulk.logger.debug { "embulk-output-bigquery: insert_job(#{@project}, #{body}, #{opts})" }
      response = with_network_retry { client.insert_job(@project, body, opts) }
      wait_load('Copy', response)
    rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
      response = {status_code: e.status_code, message: e.message, error_class: e.class}
      Embulk.logger.error {
        "embulk-output-bigquery: insert_job(#{@project}, #{body}, #{opts}), response:#{response}"
      }
      raise Error, "failed to copy #{@destination_project}:#{@dataset}.#{source_table} " \
        "to #{@destination_project}:#{destination_dataset}.#{destination_table}, response:#{response}"
    end
  end
end

#create_dataset(dataset = nil, reference: nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 355

def create_dataset(dataset = nil, reference: nil)
  dataset ||= @dataset
  begin
    Embulk.logger.info { "embulk-output-bigquery: Create dataset... #{@destination_project}:#{dataset} in #{@location_for_log}" }
    hint = {}
    if reference
      response = get_dataset(reference)
      hint = { access: response.access }
    end
    body = {
      dataset_reference: {
        project_id: @project,
        dataset_id: dataset,
      },
    }.merge(hint)
    if @location
      body[:location] = @location
    end
    opts = {}
    Embulk.logger.debug { "embulk-output-bigquery: insert_dataset(#{@project}, #{dataset}, #{@location_for_log}, #{body}, #{opts})" }
    with_network_retry { client.insert_dataset(@project, body, opts) }
  rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
    if e.status_code == 409 && /Already Exists:/ =~ e.message
      # ignore 'Already Exists' error
      return
    end

    response = {status_code: e.status_code, message: e.message, error_class: e.class}
    Embulk.logger.error {
      "embulk-output-bigquery: insert_dataset(#{@project}, #{body}, #{opts}), response:#{response}"
    }
    raise Error, "failed to create dataset #{@destination_project}:#{dataset} in #{@location_for_log}, response:#{response}"
  end
end

#create_table_if_not_exists(table, dataset: nil, options: nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 408

def create_table_if_not_exists(table, dataset: nil, options: nil)
  begin
    dataset ||= @dataset
    options ||= {}
    options['time_partitioning'] ||= @task['time_partitioning']
    if Helper.has_partition_decorator?(table)
      options['time_partitioning'] ||= {'type' => 'DAY'}
      table = Helper.chomp_partition_decorator(table)
    end

    Embulk.logger.info { "embulk-output-bigquery: Create table... #{@destination_project}:#{dataset}.#{table}" }
    body = {
      table_reference: {
        table_id: table,
      },
      schema: {
        fields: fields,
      }
    }

    if options['time_partitioning']
      body[:time_partitioning] = {
        type: options['time_partitioning']['type'],
        expiration_ms: options['time_partitioning']['expiration_ms'],
        field: options['time_partitioning']['field'],
      }
    end

    options['clustering'] ||= @task['clustering']
    if options['clustering']
      body[:clustering] = {
        fields: options['clustering']['fields'],
      }
    end

    if options['expiration_time']
      # expiration_time is expressed in milliseconds
      body[:expiration_time] = (Time.now.to_i + options['expiration_time']) * 1000
    end

    opts = {}
    Embulk.logger.debug { "embulk-output-bigquery: insert_table(#{@project}, #{dataset}, #{@location_for_log}, #{body}, #{opts})" }
    with_network_retry { client.insert_table(@project, dataset, body, opts) }
  rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
    if e.status_code == 409 && /Already Exists:/ =~ e.message
      # ignore 'Already Exists' error
      return
    end

    response = {status_code: e.status_code, message: e.message, error_class: e.class}
    Embulk.logger.error {
      "embulk-output-bigquery: insert_table(#{@project}, #{dataset}, #{@location_for_log}, #{body}, #{opts}), response:#{response}"
    }
    raise Error, "failed to create table #{@destination_project}:#{dataset}.#{table} in #{@location_for_log}, response:#{response}"
  end
end

#delete_partition(table, dataset: nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 470

def delete_partition(table, dataset: nil)
  delete_table_or_partition(table, dataset: dataset)
end

#delete_table(table, dataset: nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 465

def delete_table(table, dataset: nil)
  table = Helper.chomp_partition_decorator(table)
  delete_table_or_partition(table, dataset: dataset)
end

#delete_table_or_partition(table, dataset: nil) ⇒ Object

if ‘table` with a partition decorator is given, a partition is deleted.



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 475

def delete_table_or_partition(table, dataset: nil)
  begin
    dataset ||= @dataset
    Embulk.logger.info { "embulk-output-bigquery: Delete table... #{@destination_project}:#{dataset}.#{table}" }
    with_network_retry { client.delete_table(@destination_project, dataset, table) }
  rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
    if e.status_code == 404 && /Not found:/ =~ e.message
      # ignore 'Not Found' error
      return
    end

    response = {status_code: e.status_code, message: e.message, error_class: e.class}
    Embulk.logger.error {
      "embulk-output-bigquery: delete_table(#{@destination_project}, #{dataset}, #{table}), response:#{response}"
    }
    raise Error, "failed to delete table #{@destination_project}:#{dataset}.#{table}, response:#{response}"
  end
end

#fields ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 35

def fields
  return @fields if @fields
  if @task['schema_file']
    @fields = Helper.deep_symbolize_keys(JSON.parse(File.read(@task['schema_file'])))
  elsif @task['template_table']
    @fields = fields_from_table(@task['template_table'])
  else
    @fields = Helper.fields_from_embulk_schema(@task, @schema)
  end
end

#fields_from_table(table) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 46

def fields_from_table(table)
  response = get_table(table)
  response.schema.fields.map {|field| field.to_h }
end

#get_dataset(dataset = nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 390

def get_dataset(dataset = nil)
  dataset ||= @dataset
  begin
    Embulk.logger.info { "embulk-output-bigquery: Get dataset... #{@destination_project}:#{dataset}" }
    with_network_retry { client.get_dataset(@destination_project, dataset) }
  rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
    if e.status_code == 404
      raise NotFoundError, "Dataset #{@destination_project}:#{dataset} is not found"
    end

    response = {status_code: e.status_code, message: e.message, error_class: e.class}
    Embulk.logger.error {
      "embulk-output-bigquery: get_dataset(#{@destination_project}, #{dataset}), response:#{response}"
    }
    raise Error, "failed to get dataset #{@destination_project}:#{dataset}, response:#{response}"
  end
end

#get_partition(table, dataset: nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 499

def get_partition(table, dataset: nil)
  get_table_or_partition(table)
end

#get_table(table, dataset: nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 494

def get_table(table, dataset: nil)
  table = Helper.chomp_partition_decorator(table)
  get_table_or_partition(table)
end

#get_table_or_partition(table, dataset: nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 503

def get_table_or_partition(table, dataset: nil)
  begin
    dataset ||= @dataset
    Embulk.logger.info { "embulk-output-bigquery: Get table... #{@destination_project}:#{dataset}.#{table}" }
    with_network_retry { client.get_table(@destination_project, dataset, table) }
  rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
    if e.status_code == 404
      raise NotFoundError, "Table #{@destination_project}:#{dataset}.#{table} is not found"
    end

    response = {status_code: e.status_code, message: e.message, error_class: e.class}
    Embulk.logger.error {
      "embulk-output-bigquery: get_table(#{@destination_project}, #{dataset}, #{table}), response:#{response}"
    }
    raise Error, "failed to get table #{@destination_project}:#{dataset}.#{table}, response:#{response}"
  end
end

#load(path, table, write_disposition: 'WRITE_APPEND') ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 168

def load(path, table, write_disposition: 'WRITE_APPEND')
  with_job_retry do
    begin
      if File.exist?(path)
        # As https://cloud.google.com/bigquery/docs/managing_jobs_datasets_projects#managingjobs says,
        # we should generate job_id in client code, otherwise, retrying would cause duplication
        job_id = "embulk_load_job_#{SecureRandom.uuid}"
        Embulk.logger.info { "embulk-output-bigquery: Load job starting... job_id:[#{job_id}] #{path} => #{@destination_project}:#{@dataset}.#{table} in #{@location_for_log}" }
      else
        Embulk.logger.info { "embulk-output-bigquery: Load job starting... #{path} does not exist, skipped" }
        return
      end

      body = {
        job_reference: {
          project_id: @project,
          job_id: job_id,
        },
        configuration: {
          load: {
            destination_table: {
              project_id: @destination_project,
              dataset_id: @dataset,
              table_id: table,
            },
            schema: {
              fields: fields,
            },
            write_disposition:     write_disposition,
            source_format:         @task['source_format'],
            max_bad_records:       @task['max_bad_records'],
            field_delimiter:       @task['source_format'] == 'CSV' ? @task['field_delimiter'] : nil,
            encoding:              @task['encoding'],
            ignore_unknown_values: @task['ignore_unknown_values'],
            allow_quoted_newlines: @task['allow_quoted_newlines'],
          }
        }
      }

      if @location
        body[:job_reference][:location] = @location
      end

      if @task['schema_update_options']
        body[:configuration][:load][:schema_update_options] = @task['schema_update_options']
      end

      opts = {
        upload_source: path,
        content_type: "application/octet-stream",
        # options: {
        #   retries: @task['retries'],
        #   timeout_sec: @task['timeout_sec'],
        #   open_timeout_sec: @task['open_timeout_sec']
        # },
      }
      Embulk.logger.debug { "embulk-output-bigquery: insert_job(#{@project}, #{body}, #{opts})" }
      response = with_network_retry { client.insert_job(@project, body, opts) }
      if @task['is_skip_job_result_check']
        response
      else
        response = wait_load('Load', response)
      end
    rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
      response = {status_code: e.status_code, message: e.message, error_class: e.class}
      Embulk.logger.error {
        "embulk-output-bigquery: insert_job(#{@project}, #{body}, #{opts}), response:#{response}"
      }
      raise Error, "failed to load #{path} to #{@destination_project}:#{@dataset}.#{table} in #{@location_for_log}, response:#{response}"
    end
  end
end

#load_from_gcs(object_uris, table) ⇒ Array

Returns responses.

Returns:

  • (Array) —

    responses



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 78

def load_from_gcs(object_uris, table)
  with_job_retry do
    begin
      # As https://cloud.google.com/bigquery/docs/managing_jobs_datasets_projects#managingjobs says,
      # we should generate job_id in client code, otherwise, retrying would cause duplication
      job_id = "embulk_load_job_#{SecureRandom.uuid}"
      Embulk.logger.info { "embulk-output-bigquery: Load job starting... job_id:[#{job_id}] #{object_uris} => #{@destination_project}:#{@dataset}.#{table} in #{@location_for_log}" }

      body = {
        job_reference: {
          project_id: @project,
          job_id: job_id,
        },
        configuration: {
          load: {
            destination_table: {
              project_id: @destination_project,
              dataset_id: @dataset,
              table_id: table,
            },
            schema: {
              fields: fields,
            },
            write_disposition: 'WRITE_APPEND',
            source_format:         @task['source_format'],
            max_bad_records:       @task['max_bad_records'],
            field_delimiter:       @task['source_format'] == 'CSV' ? @task['field_delimiter'] : nil,
            encoding:              @task['encoding'],
            ignore_unknown_values: @task['ignore_unknown_values'],
            allow_quoted_newlines: @task['allow_quoted_newlines'],
            source_uris: object_uris,
          }
        }
      }

      if @location
        body[:job_reference][:location] = @location
      end

      if @task['schema_update_options']
        body[:configuration][:load][:schema_update_options] = @task['schema_update_options']
      end

      opts = {}

      Embulk.logger.debug { "embulk-output-bigquery: insert_job(#{@project}, #{body}, #{opts})" }
      response = with_network_retry { client.insert_job(@project, body, opts) }
      unless @task['is_skip_job_result_check']
        response = wait_load('Load', response)
      end
      [response]
    rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
      response = {status_code: e.status_code, message: e.message, error_class: e.class}
      Embulk.logger.error {
        "embulk-output-bigquery: insert_job(#{@project}, #{body}, #{opts}), response:#{response}"
      }
      raise Error, "failed to load #{object_uris} to #{@destination_project}:#{@dataset}.#{table} in #{@location_for_log}, response:#{response}"
    end
  end
end

#load_in_parallel(paths, table) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 139

def load_in_parallel(paths, table)
  return [] if paths.empty?
  # You may think as, load job is a background job, so sending requests in parallel
  # does not improve performance. However, with actual experiments, this parallel
  # loadings drastically shortened waiting time. It looks one jobs.insert takes about 50 sec.
  # NOTICE: parallel uploadings of files consumes network traffic. With 24 concurrencies
  # with 100MB files consumed about 500Mbps in the experimented environment at a peak.
  #
  # We before had a `max_load_parallels` option, but this was not extensible for map reduce executor
  # So, we dropped it. See https://github.com/embulk/embulk-output-bigquery/pull/35
  responses = []
  threads = []
  Embulk.logger.debug { "embulk-output-bigquery: LOAD IN PARALLEL #{paths}" }
  paths.each_with_index do |path, idx|
    threads << Thread.new(path, idx) do |path, idx|
      # I am not sure whether google-api-ruby-client is thread-safe,
      # so let me create new instances for each thread for safe
      bigquery = self.class.new(@task, @schema, fields)
      response = bigquery.load(path, table)
      [idx, response]
    end
  end
  ThreadsWait.all_waits(*threads) do |th|
    idx, response = th.value # raise errors occurred in threads
    responses[idx] = response
  end
  responses
end

#reset_fields(fields = nil) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 51

def reset_fields(fields = nil)
  @fields = fields
  self.fields
end

#wait_load(kind, response) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 294

def wait_load(kind, response)
  started = Time.now

  wait_interval = @task['job_status_polling_interval']
  max_polling_time = @task['job_status_max_polling_time']
  _response = response

  while true
    job_id = _response.job_reference.job_id
    elapsed = Time.now - started
    status = _response.status.state
    if status == "DONE"
      Embulk.logger.info {
        "embulk-output-bigquery: #{kind} job completed... " \
        "job_id:[#{job_id}] elapsed_time:#{elapsed.to_f}sec status:[#{status}]"
      }
      break
    elsif elapsed.to_i > max_polling_time
      message = "embulk-output-bigquery: #{kind} job checking... " \
        "job_id:[#{job_id}] elapsed_time:#{elapsed.to_f}sec status:[TIMEOUT]"
      Embulk.logger.info { message }
      raise JobTimeoutError.new(message)
    else
      Embulk.logger.info {
        "embulk-output-bigquery: #{kind} job checking... " \
        "job_id:[#{job_id}] elapsed_time:#{elapsed.to_f}sec status:[#{status}]"
      }
      sleep wait_interval
      _response = with_network_retry { client.get_job(@project, job_id, location: @location) }
    end
  end

  # `errors` returns Array<Google::Apis::BigqueryV2::ErrorProto> if any error exists.
  _errors = _response.status.errors

  # cf. http://www.rubydoc.info/github/google/google-api-ruby-client/Google/Apis/BigqueryV2/JobStatus#errors-instance_method
  # `error_result` returns Google::Apis::BigqueryV2::ErrorProto if job failed.
  # Otherwise, this returns nil.
  if _response.status.error_result
    msg = "failed during waiting a #{kind} job, get_job(#{@project}, #{job_id}), errors:#{_errors.map(&:to_h)}"
    if _errors.any? {|error| error.reason == 'backendError' }
      raise BackendError, msg
    elsif _errors.any? {|error| error.reason == 'internalError' }
      raise InternalError, msg
    elsif _errors.any? {|error| error.reason == 'rateLimitExceeded' }
      raise RateLimitExceeded, msg
    else
      Embulk.logger.error { "embulk-output-bigquery: #{msg}" }
      raise Error, msg
    end
  end

  if _errors
    Embulk.logger.warn { "embulk-output-bigquery: #{kind} job errors... job_id:[#{job_id}] errors:#{_errors.map(&:to_h)}" }
  end

  Embulk.logger.info { "embulk-output-bigquery: #{kind} job response... job_id:[#{job_id}] response.statistics:#{_response.statistics.to_h}" }

  _response
end

#with_job_retry(&block) ⇒ Object 



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# File 'lib/embulk/output/bigquery/bigquery_client.rb', line 56

def with_job_retry(&block)
  retries = 0
  begin
    yield
  rescue BackendError, InternalError, RateLimitExceeded => e
    if e.is_a?(RateLimitExceeded)
      sleep(BIGQUERY_TABLE_OPERATION_INTERVAL)
    end

    if retries < @task['retries']
      retries += 1
      Embulk.logger.warn { "embulk-output-bigquery: retry \##{retries}, #{e.message}" }
      retry
    else
      Embulk.logger.error { "embulk-output-bigquery: retry exhausted \##{retries}, #{e.message}" }
      raise e
    end
  end
end