Passing Environment Variables to a Pentaho Kettle Transformation via script

Passing Environment Variables to a Pentaho Kettle Transformation via script

You can pass environment variables to a Pentaho Kettle (now called Pentaho Data Integration or PDI) transformation using a script. One common way to achieve this is by using a shell script or batch script to set the environment variables before executing the transformation.

Here's an example of how you can achieve this using a shell script on Unix-like systems:

#!/bin/bash # Set environment variables export MY_VARIABLE=value export ANOTHER_VARIABLE=another_value # Execute Pentaho Kettle transformation /opt/pentaho/data-integration/kitchen.sh -file=/path/to/your/transformation.ktr -level=Basic

And here's an example of how you can achieve this using a batch script on Windows:

@echo off rem Set environment variables set MY_VARIABLE=value set ANOTHER_VARIABLE=another_value rem Execute Pentaho Kettle transformation "C:\path\to\pentaho\data-integration\kitchen.bat" /file="C:\path\to\your\transformation.ktr" /level=Basic

In both examples:

  • Replace /path/to/your/transformation.ktr with the actual path to your PDI transformation file.
  • You can set as many environment variables as needed before executing the transformation.
  • The kitchen.sh or kitchen.bat script is used to execute the transformation. Adjust the path according to your Pentaho Data Integration installation directory.

When you run the script, it will set the environment variables and then execute the Pentaho Kettle transformation with those environment variables passed to it.

Make sure to set appropriate permissions on the script file so that it can be executed. Additionally, ensure that the paths to the Pentaho Data Integration scripts and your transformation file are correct.

This approach allows you to pass environment variables to a Pentaho Kettle transformation in a scriptable manner, which can be useful for automation and integration purposes.

Examples

  1. "Passing environment variables to Pentaho Kettle transformation using shell script"

    • Description: This query explores methods to pass environment variables to a Pentaho Kettle transformation via a shell script, a common approach for configuration management.
    # Example shell script to pass environment variables export VARIABLE_NAME=value kitchen.sh -file=my_transformation.ktr -param:PARAM_NAME=$VARIABLE_NAME

  2. "Using bash script to set environment variables for Pentaho Kettle transformation"

    • Description: Developers may search for bash scripting techniques to set environment variables before executing a Pentaho Kettle transformation, ensuring dynamic configuration.
    # Example bash script to set environment variables export DATABASE_URL=jdbc:mysql://localhost:3306/mydb kitchen.sh -file=my_transformation.ktr -param:DB_URL=$DATABASE_URL

  3. "Passing runtime parameters to Pentaho Kettle transformation via shell script"

    • Description: This query targets methods to pass runtime parameters, possibly stored as environment variables, to a Pentaho Kettle transformation using a shell script.
    # Example shell script passing runtime parameters export INPUT_FILE=/path/to/input.csv export OUTPUT_FILE=/path/to/output.csv kitchen.sh -file=my_transformation.ktr -param:INPUT=$INPUT_FILE -param:OUTPUT=$OUTPUT_FILE

  4. "Passing environment variables to Kettle transformation from command line"

    • Description: Developers may seek ways to pass environment variables directly from the command line to a Pentaho Kettle transformation, facilitating dynamic configuration.
    # Example command line passing environment variables kitchen.sh -file=my_transformation.ktr -param:ENV_VAR=$ENV_VAR_VALUE

  5. "Automating Pentaho Kettle transformation parameterization with shell script"

    • Description: This query focuses on automating the parameterization of Pentaho Kettle transformations, potentially utilizing shell scripts to set environment variables.
    # Example shell script automating parameterization export PARAM1=value1 export PARAM2=value2 kitchen.sh -file=my_transformation.ktr -param:PARAM1=$PARAM1 -param:PARAM2=$PARAM2

  6. "Setting environment variables for Pentaho Kettle transformation execution in shell"

    • Description: Developers may look for methods to set environment variables in the shell environment before executing a Pentaho Kettle transformation, ensuring proper configuration.
    # Example setting environment variables in shell export INPUT_DIR=/path/to/input_dir export OUTPUT_DIR=/path/to/output_dir kitchen.sh -file=my_transformation.ktr -param:INPUT_DIR=$INPUT_DIR -param:OUTPUT_DIR=$OUTPUT_DIR

  7. "Passing system properties to Pentaho Kettle transformation via shell script"

    • Description: This query addresses passing system properties, potentially stored as environment variables, to a Pentaho Kettle transformation using a shell script.
    # Example shell script passing system properties export JAVA_OPTS="-Dproperty1=value1 -Dproperty2=value2" kitchen.sh -file=my_transformation.ktr -param:JAVA_OPTS="$JAVA_OPTS"

  8. "Dynamic parameterization of Pentaho Kettle transformation using shell script"

    • Description: Developers may seek methods to dynamically parameterize Pentaho Kettle transformations, potentially leveraging shell scripts to set environment variables based on runtime conditions.
    # Example shell script for dynamic parameterization if [[ $ENVIRONMENT == "production" ]]; then export DATABASE_URL=my_production_db_url else export DATABASE_URL=my_test_db_url fi kitchen.sh -file=my_transformation.ktr -param:DB_URL=$DATABASE_URL

  9. "Pentaho Kettle transformation execution with configurable parameters using shell script"

    • Description: This query focuses on executing Pentaho Kettle transformations with configurable parameters, possibly managed through environment variables set by a shell script.
    # Example shell script for configurable parameters export INPUT_PATH=/path/to/input export OUTPUT_PATH=/path/to/output kitchen.sh -file=my_transformation.ktr -param:INPUT_PATH=$INPUT_PATH -param:OUTPUT_PATH=$OUTPUT_PATH

  10. "Passing environment-specific settings to Pentaho Kettle transformation via shell"

    • Description: Developers may search for ways to pass environment-specific settings, such as database connection details, to a Pentaho Kettle transformation using shell scripts.
    # Example shell script passing environment-specific settings export DB_HOST=localhost export DB_PORT=3306 export DB_USER=myuser export DB_PASS=mypassword kitchen.sh -file=my_transformation.ktr -param:DB_HOST=$DB_HOST -param:DB_PORT=$DB_PORT -param:DB_USER=$DB_USER -param:DB_PASS=$DB_PASS

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