Showing posts with label IDQ. Show all posts
Showing posts with label IDQ. Show all posts

Saturday, May 30, 2020

How to call Informatica MDM batch jobs using Informatia Data Quality (IDQ)

Are you looking for an article about calling Informatica MDM batch jobs? Are you also looking for how to call Informatica jobs using IDQ mapping or maplet? If so, then you reached the right place. In this article, we will see how to call Informatica MDM jobs such as stage, load, tokenization, match, merge, and batch groups using Informatica Data Quality (IDQ) mapping.

A. Introduction

Informatica MDM exposes various operations in the form of APIs and SOAP Web Service. We can call SOAP Web Service in Informatica Data Quality (IDQ) to execute MDM batch jobs. In this article, we will see step by step process how to create Web Service consumer and create mapping or maplet to call the SOAP Web Service.

B. Create Web Service Consumer

We need to create a web service consumer to call MDM SOAP Web Service. To create  Web Service Consumer, select Physical Data Object and right-click to add Web Service consumer. A new dialog window will open to select the component. Select it and click next.

Configure Web Service endpoint URL which can be provided by MDM team. You need username and password to access MDM SOAP Web Service.

C. Create MDM Connection

To create MDM connection, go to Windows -> Preferences and select Connections under Web Services component. Provide authentical details as shown in the screen below.

Make sure proper values for Timeout, HTTP Authentication Type, and WS-Security Type are selected. Then test the Web Service connection using 'Test Connection' button.

D. Mapping Overview

The mapping contains source component, input expression, Web Service Consumer transformation, output expression, and target component. 

1.  Source Component

Create a source component as flat file or database table.

2.  Input expression

Create an input expression and translate input values into Web Service-specific values such as orsId, batchGroupUid etc.

3.  Web Service Consumer Transformation 

Create a web service consumer transformation and pass the input variables.

Verify all the required ports properly automatically populated.

Update the input mapping with proper ports and if any ports are improperly mapped then correct it. Make sure key columns in the target are all mapped with some values from input

Verify the output mapping is correctly populated. Make necessary changes if required.

Make sure the Connection object is properly populated and other relevant properties under the Advanced section.

4.  Union Transformation 

Combine all the output parameters from web service and create a Union transformation. This is required to populate fault message in the response.

5.  Output Expression 

Create output expression to map all the attributes from Union transformation and translate it into the output format.

6.  Target Component 

Create the target component with a flat file or database table to persist the response of Informatica MDM job status and statistics.

Saturday, April 11, 2020

Informatica Data Quality - IDQ - How to call Web Service in Java Transformation

In this article, we are going to understand step by step process to create Informatica Data Quality (IDQ) mapping to make external Web Service calls using Java transformation.

A. Overview of mapping

The mapping contains 5 major components. The first component is the source file. We can use a file or a database table as input this mapping which can hold basic information. The second component is an expression to convert input values to make them suitable for Java transformation. The third component is Java transformation which contains logic to make a call the web service. The next component is an output expression to transform the response from Java expression into output format. The last component is a target file or a database table to populate response.

B. Source Component

The source in the mapping can be a flat file or database table. It will contain the input required for Web Service. e.g. Web Service URL, Username, Password, Context etc.

Source File

C. Source Expression

The source expression will be used to convert input values into suitable Java transformation input. e.g. Join multiple sources attributes to create URL, prepare the web service endpoint URL, populate username and password, or any other custom processing etc.

D. Java Transformation

The Java transformation can be used to call external or internal Web Service. In this example, we are going to call external web service.

a) Import jar file

Import all the required files and store at local system or Unix box. The IDQ mapping should read access to these files so that those can be loaded in JVM. Once all the required jars are stored, set the classpath variable under the Advanced section and point it to each of the jar files.

b) Import classes

Import all the java classes which are required to call web service. Here is screenshot with sample java classes used during the Web Service call.

c)  Call Web Service

Once we have all the required information to call Web Service, write a logic to handle the business requirement. In the java logic below, we are calling web service two times. From the first web service call, we are getting the response and sending that response in second web service call and then we are getting the final output.

The sample code is here,

* Author : Abc
* This Java code is used to get status of the the input task and wait until it become 'SUCCESS'

* Input Parameters:
* taskName - Input taskflow
* urlSubmit - Web service endpoint to get RunId for input taskflow
* urlGetStatus - Web service endpoint to get status using RunId
* loginUid - Userid for authentication
* loginPwd - Password for authentication

       try {
        // Step 1: Get RunId using Web Service endpoint and task name
String url = "https://localhost:8080/TaskName";
// String url = urlSubmit + taskName;
        String name = "abcuser";
       // String name = loginUid;
       String password = "abcpassword;
       // String password = loginPwd;
        String authString = name + ":" + password;
        String authStringEnc = Base64.getEncoder().encodeToString(authString.getBytes());
        Client restClient = Client.create();
        WebResource webResource = restClient.resource(url);
        ClientResponse resp = webResource.accept("application/json").header("Authorization", "Basic " + authStringEnc).get(ClientResponse.class);       
        String stTaskIdMessage = resp.getEntity(String.class);
        // Step 2: Parse response to get RunId from Web Service for given task
        JSONParser jsonParser = new JSONParser();
        JSONObject jsonObj = (JSONObject) jsonParser.parse(stTaskIdMessage);
        String stRunId = (String) jsonObj.get("RunId");
        // Step 3: Call Web service endpoint to get status of input taskflow and check if it not in 'RUNNING' state. 
        // If it is in RUNNING stage, wait until the state changes.
        boolean isRunning = true;
        String stStatus = "";
        while (isRunning) {
          String url2 = "https://localhost:8080/task/status/"+stRunId;
             WebResource webResourceStatus = restClient.resource(url2);
             ClientResponse respStatus = webResourceStatus.accept("application/json").header("Authorization", "Basic " + authStringEnc).get(ClientResponse.class);
             String stStatusMessage = respStatus.getEntity(String.class);
             JSONObject jsonStatusObj = (JSONObject) jsonParser.parse(stStatusMessage);
             stStatus = (String) jsonStatusObj.get("status");
             if (!stStatus.contentEquals("RUNNING") ) {
              isRunning = false;
      } else {
      Thread.sleep(10000); // Value is in millisecond. Currently it is set for 10 seconds

        runId = stRunId;
status = stStatus; // Return status to output field.
catch (Exception e)  { // Required to handle exception which is thrown from JSON Parser.

d)  Call Web Service

The full source code can be accessed from Java -> Full code. This will give broader view of how the Java code executed at run time.

e) Compile code

Once the code completed then compile to code in order to generate .class files load in the memory. In order to compile the code user section - Advanced -> Properties -> Compilation

E. Output Expression

Create output expression to translate the output from Java transformation into the output file or database table.

F. Output Component

Create output file or database table in order to populate the final response output. The output can be used for business use purposes.

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