August 16, 2023

tRestWebServiceOutput – Docs for ESB 6.x

tRestWebServiceOutput

Serves as a REpresentational State Transfer (REST) Web service client that
continuously sends HTTP requests to a REST Web service provider in real time and gets the
responses.

tRestWebServiceOutput properties for Apache Spark Streaming

These properties are used to configure tRestWebServiceOutput running in the Spark Streaming Job framework.

The Spark Streaming
tRestWebServiceOutput component belongs to the Webservice family.

The streaming version of this component is available in the Palette of the Studio only if you have subscribed to Talend Real-time Big Data Platform or Talend Data
Fabric.

Basic settings

Schema and Edit
Schema

A schema is a row description. It defines the number of fields (columns) to
be processed and passed on to the next component. The schema is either Built-In or stored remotely in the Repository.

The schema of this component is read-only. You can click Edit schema to view the schema.

This read-only payload column is used to carry the body
of the request to be processed. Note that you must define a same payload column in the schema of the preceding component to send data to this
read-only column.

URL

Enter the URL address of the REST Web server to be invoked.

HTTP Method

From this list, select an HTTP method that describes the desired action. The specific
meanings of the HTTP methods are subject to definitions of your Web service provider. Listed
below are the generally accepted HTTP methods:

  • PUT: updates data based on the given parameters, or
    if the data does not exist, creates it.

  • POST: creates and uploads data based on the given
    parameters.

  • DELETE: removes data based on the given parameters.

HTTP Headers

Enter the name-value pair(s) for HTTP headers to define the parameters of the requested
HTTP operation.

For the specific definitions of HTTP headers, consult your REST Web service provider. For
reference information, visit en.wikipedia.org/wiki/List_of_HTTP_headers.

Advanced settings

Use SSL/TLS

Select this check box to enable the SSL or TLS encrypted connection.

Then you need to use the tSetKeystore
component in the same Job to specify the encryption information.

For further information about tSetKeystore, see tSetKeystore.

Usage

Usage rule

This component is used as an end component and requires an input link.

This component, along with the Spark Streaming component Palette it belongs to, appears
only when you are creating a Spark Streaming Job.

Note that in this documentation, unless otherwise explicitly stated, a scenario presents
only Standard Jobs, that is to say traditional
Talend
data
integration Jobs.

Spark Connection

You need to use the Spark Configuration tab in
the Run view to define the connection to a given
Spark cluster for the whole Job. In addition, since the Job expects its dependent jar
files for execution, you must specify the directory in the file system to which these
jar files are transferred so that Spark can access these files:

  • Yarn mode: when using Google
    Dataproc, specify a bucket in the Google Storage staging
    bucket
    field in the Spark
    configuration
    tab; when using other distributions, use a
    tHDFSConfiguration
    component to specify the directory.

  • Standalone mode: you need to choose
    the configuration component depending on the file system you are using, such
    as tHDFSConfiguration
    or tS3Configuration.

This connection is effective on a per-Job basis.

Related scenarios

No scenario is available for the Spark Streaming version of this component
yet.


Document get from Talend https://help.talend.com
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