Class: Fluent::BigQuery::Writer

Inherits:
Object
  • Object
show all
Defined in:
lib/fluent/plugin/bigquery/writer.rb

Defined Under Namespace

Classes: Error, RetryableError, UnRetryableError

Constant Summary collapse

RETRYABLE_ERROR_REASON = 
%w(backendError internalError rateLimitExceeded tableUnavailable).freeze

Instance Method Summary collapse

Constructor Details

#initialize(log, auth_method, auth_options = {}) ⇒ Writer

Returns a new instance of Writer.



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# File 'lib/fluent/plugin/bigquery/writer.rb', line 43

def initialize(log, auth_method, auth_options = {})
  @auth_method = auth_method
  @scope = "https://www.googleapis.com/auth/bigquery"
  @auth_options = auth_options
  @log = log

  @cached_client_expiration = Time.now + 1800
end

Instance Method Details

#client ⇒ Object 



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# File 'lib/fluent/plugin/bigquery/writer.rb', line 52

def client
  return @client if @client && @cached_client_expiration > Time.now

  client = Google::Apis::BigqueryV2::BigqueryService.new.tap do |cl|
    cl.authorization = get_auth
  end

  @cached_client_expiration = Time.now + 1800
  @client = client
end

#create_load_job(project, dataset, table_id, upload_source, job_id, fields, ignore_unknown_values: false, max_bad_records: 0, timeout_sec: nil, open_timeout_sec: 60) ⇒ Object 



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# File 'lib/fluent/plugin/bigquery/writer.rb', line 141

def create_load_job(project, dataset, table_id, upload_source, job_id, fields, ignore_unknown_values: false, max_bad_records: 0, timeout_sec: nil, open_timeout_sec: 60)
  configuration = {
    configuration: {
      load: {
        destination_table: {
          project_id: project,
          dataset_id: dataset,
          table_id: table_id,
        },
        schema: {
          fields: fields.to_a,
        },
        write_disposition: "WRITE_APPEND",
        source_format: "NEWLINE_DELIMITED_JSON",
        ignore_unknown_values: ignore_unknown_values,
        max_bad_records: max_bad_records,
      }
    }
  }
  configuration.merge!({job_reference: {project_id: project, job_id: job_id}}) if job_id

  # If target table is already exist, omit schema configuration.
  # Because schema changing is easier.
  begin
    if client.get_table(project, dataset, table_id)
      configuration[:configuration][:load].delete(:schema)
    end
  rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError
    raise UnRetryableError.new("Schema is empty") if fields.empty?
  end

  res = client.insert_job(
    project,
    configuration,
    {
      upload_source: upload_source,
      content_type: "application/octet-stream",
      options: {
        timeout_sec: timeout_sec,
        open_timeout_sec: open_timeout_sec,
      }
    }
  )
  wait_load_job(project, dataset, res.job_reference.job_id, table_id)
rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
  @client = nil

  reason = e.respond_to?(:reason) ? e.reason : nil
  log.error "job.load API", project_id: project, dataset: dataset, table: table_id, code: e.status_code, message: e.message, reason: reason

  return wait_load_job(project, dataset, job_id, table_id, retryable: false) if job_id && e.status_code == 409 && e.message =~ /Job/ # duplicate load job

  if RETRYABLE_ERROR_REASON.include?(reason) || e.is_a?(Google::Apis::ServerError)
    raise RetryableError.new(nil, e)
  else
    raise UnRetryableError.new(nil, e)
  end
end

#create_table(project, dataset, table_id, record_schema) ⇒ Object 



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# File 'lib/fluent/plugin/bigquery/writer.rb', line 63

def create_table(project, dataset, table_id, record_schema)
  create_table_retry_limit = 3
  create_table_retry_wait = 1
  create_table_retry_count = 0

  begin
    client.insert_table(project, dataset, {
      table_reference: {
        table_id: table_id,
      },
      schema: {
        fields: record_schema.to_a,
      }
    }, {})
    log.debug "create table", project_id: project, dataset: dataset, table: table_id
    @client = nil
  rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
    @client = nil

    message = e.message
    if e.status_code == 409 && /Already Exists:/ =~ message
      log.debug "already created table", project_id: project, dataset: dataset, table: table_id
      # ignore 'Already Exists' error
      return
    end

    reason = e.respond_to?(:reason) ? e.reason : nil
    log.error "tables.insert API", project_id: project, dataset: dataset, table: table_id, code: e.status_code, message: message, reason: reason

    if RETRYABLE_ERROR_REASON.include?(reason) && create_table_retry_count < create_table_retry_limit
      sleep create_table_retry_wait
      create_table_retry_wait *= 2
      create_table_retry_count += 1
      retry
    else
      raise UnRetryableError.new("failed to create table in bigquery", e)
    end
  end
end

#fetch_schema(project, dataset, table_id) ⇒ Object 



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# File 'lib/fluent/plugin/bigquery/writer.rb', line 103

def fetch_schema(project, dataset, table_id)
  res = client.get_table(project, dataset, table_id)
  schema = res.schema.fields.as_json
  log.debug "Load schema from BigQuery: #{project}:#{dataset}.#{table_id} #{schema}"

  schema
rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
  @client = nil
  message = e.message
  log.error "tables.get API", project_id: project, dataset: dataset, table: table_id, code: e.status_code, message: message
  nil
end

#insert_rows(project, dataset, table_id, rows, skip_invalid_rows: false, ignore_unknown_values: false, template_suffix: nil, timeout_sec: nil, open_timeout_sec: 60) ⇒ Object 



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# File 'lib/fluent/plugin/bigquery/writer.rb', line 116

def insert_rows(project, dataset, table_id, rows, skip_invalid_rows: false, ignore_unknown_values: false, template_suffix: nil, timeout_sec: nil, open_timeout_sec: 60)
  body = {
    rows: rows,
    skip_invalid_rows: skip_invalid_rows,
    ignore_unknown_values: ignore_unknown_values,
  }
  body.merge!(template_suffix: template_suffix) if template_suffix
  res = client.insert_all_table_data(project, dataset, table_id, body, {
    options: {timeout_sec: timeout_sec, open_timeout_sec: open_timeout_sec}
  })
  log.debug "insert rows", project_id: project, dataset: dataset, table: table_id, count: rows.size
  log.warn "insert errors", insert_errors: res.insert_errors if res.insert_errors && !res.insert_errors.empty?
rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
  @client = nil

  reason = e.respond_to?(:reason) ? e.reason : nil
  log.error "tabledata.insertAll API", project_id: project, dataset: dataset, table: table_id, code: e.status_code, message: e.message, reason: reason

  if RETRYABLE_ERROR_REASON.include?(reason)
    raise RetryableError.new(nil, e)
  else
    raise UnRetryableError.new(nil, e)
  end
end

#wait_load_job(project, dataset, job_id, table_id, retryable: true) ⇒ Object 



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# File 'lib/fluent/plugin/bigquery/writer.rb', line 200

def wait_load_job(project, dataset, job_id, table_id, retryable: true)
  wait_interval = 10
  _response = client.get_job(project, job_id)

  until _response.status.state == "DONE"
    log.debug "wait for load job finish", state: _response.status.state, job_id: _response.job_reference.job_id
    sleep wait_interval
    _response = client.get_job(project, _response.job_reference.job_id)
  end

  errors = _response.status.errors
  if errors
    errors.each do |e|
      log.error "job.insert API (rows)", job_id: job_id, project_id: project, dataset: dataset, table: table_id, message: e.message, reason: e.reason
    end
  end

  error_result = _response.status.error_result
  if error_result
    log.error "job.insert API (result)", job_id: job_id, project_id: project, dataset: dataset, table: table_id, message: error_result.message, reason: error_result.reason
    if retryable && RETRYABLE_ERROR_REASON.include?(error_result.reason)
      raise RetryableError.new("failed to load into bigquery, retry")
    else
      raise UnRetryableError.new("failed to load into bigquery, and cannot retry")
    end
  end

  log.debug "finish load job", state: _response.status.state
end