Google BigQuery Standard SQL Component

Available as of Camel version 2.23

The Google Bigquery SQL component provides access to Cloud BigQuery Infrastructure via the Google Client Services API.

The current implementation supports only standard SQL DML queries.

Maven users will need to add the following dependency to their pom.xml for this component:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-google-bigquery</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

Authentication Configuration

Google BigQuery component authentication is targeted for use with the GCP Service Accounts. For more information please refer to Google Cloud Platform Auth Guide

Google security credentials can be set explicitly via one of the two options:

  • Service Account Email and Service Account Key (PEM format)

  • GCP credentials file location

If both are set, the Service Account Email/Key will take precedence.

Or implicitly, where the connection factory falls back on Application Default Credentials.

OBS! The location of the default credentials file is configurable - via GOOGLE_APPLICATION_CREDENTIALS environment variable.

Service Account Email and Service Account Key can be found in the GCP JSON credentials file as client_email and private_key respectively.

URI Format

        google-bigquery-sql://project-id:query?[options]

Examples:

        google-bigquery-sql://project-17248459:delete * from test.table where id=@myId
        google-bigquery-sql://project-17248459:delete * from ${datasetId}.${tableId} where id=@myId

where

  • parameters in form ${name} are extracted from message headers and formed the translated query

  • parameters in form @name are extracted from body or message headers and sent to Google Bigquery

You can externalize your SQL queries to files in the classpath or file system as shown:

        google-bigquery-sql://project-17248459::classpath:delete.sql

Options

The Google BigQuery Standard SQL component supports 3 options, which are listed below.

Name Description Default Type

projectId (producer)

Google Cloud Project Id

String

connectionFactory (producer)

ConnectionFactory to obtain connection to Bigquery Service. If non provided the default one will be used

GoogleBigQuery ConnectionFactory

resolveProperty Placeholders (advanced)

Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders.

true

boolean

The Google BigQuery Standard SQL endpoint is configured using URI syntax:

google-bigquery-sql:query

with the following path and query parameters:

Path Parameters (2 parameters):

Name Description Default Type

projectId

Required Google Cloud Project Id

String

query

Required BigQuery standard SQL query

String

Query Parameters (2 parameters):

Name Description Default Type

connectionFactory (producer)

ConnectionFactory to obtain connection to Bigquery Service. If non provided the default will be used.

GoogleBigQuery ConnectionFactory

synchronous (advanced)

Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported).

false

boolean

Spring Boot Auto-Configuration

When using Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-google-bigquery-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>

The component supports 3 options, which are listed below.

Name Description Default Type

camel.component.google-bigquery-sql.enabled

Whether to enable auto configuration of the google-bigquery-sql component. This is enabled by default.

Boolean

camel.component.google-bigquery-sql.project-id

Google Cloud Project Id

String

camel.component.google-bigquery-sql.resolve-property-placeholders

Whether the component should resolve property placeholders on itself when starting. Only properties which are of String type can use property placeholders.

true

Boolean

Ouput Message Headers

Name Type Description

CamelGoogleBigQueryTranslatedQuery

String

Preprocessed query text

Producer Endpoints

Google BigQuery SQL endpoint expects the payload to be either empty or a map of query parameters.