pyliquibase

A Python module to use liquibase in python, using the Java Native Interface (JNI).

For further details on python-java integration please see here

Installation

Python-Java integration requires a Java Development Kit (JDK). Ensure a JDK is installed on your operating system.

install:

pip install pyliquibase

How to Use

using command line:

pyliquibase --defaultsFile=changelogs/liquibase.properties status
pyliquibase --defaultsFile=changelogs/liquibase.properties validate
pyliquibase --defaultsFile=changelogs/liquibase.properties updateSQL
pyliquibase --defaultsFile=changelogs/liquibase.properties update

using python:

from pyliquibase import Pyliquibase

if __name__ == '__main__':
    liquibase = Pyliquibase(defaultsFile="changelogs/liquibase.properties", logLevel="INFO")
    # call execute with arguments
    liquibase.execute("status")
    liquibase.execute("rollback", "MyTag")
    # or 
    liquibase.validate()
    liquibase.status()
    liquibase.updateSQL()
    liquibase.update()
    liquibase.update_to_tag("MyTag")
    liquibase.rollback("MyTag")
    # liquibase maintenance commands
    liquibase.changelog_sync()
    liquibase.changelog_sync_to_tag("MyTag")
    liquibase.clear_checksums()
    liquibase.release_locks()

Python Java Integration

This Python library integrates with Java using the LiquibaseCommandLine class. Our Python LiquibaseCommandLine class acts as a reflection of the Java counterpart, passing Liquibase calls to the Java LiquibaseCommandLine.execute(liquibaseargs) method.

This integration leverages Pyjnius, a Python library for accessing Java classes. Pyjnius either starts a new Java Virtual Machine (JVM) within the current process or connects to an existing JVM. For more information on Pyjnius, please refer to their documentation: https://pyjnius.readthedocs.io/en/latest/.

class LiquibaseCommandLine(JavaClass, metaclass=MetaJavaClass):
    __javaclass__ = 'liquibase/integration/commandline/LiquibaseCommandLine'
    # methods
    execute = JavaMethod('([Ljava/lang/String;)I')

Contributors

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