1. How to migrate activiti to camunda
Migrating the process engine Activiti to the workflow platform Camunda needs to consider the following aspects:
1. Compatibility of process definition: Camunda supports the BPMN 2.0 specification, so the process defined by Activiti needs to be checked and adjusted to ensure compatibility with Camunda.
2. Database compatibility: Both Camunda and Activiti support a variety of databases, but they are different in the data table structure, which requires adjustment and migration of the data table structure.
3. Service integration: If Activiti is integrated with other systems, it is necessary to redevelop and adjust Camunda's service integration.
4. Application integration: If Activiti is integrated into the application, the application code needs to be rewritten and adjusted to be compatible with Camunda.
Camunda officially provides an open source tool called activiti-to-camunda for migrating Activiti 5 and Activiti 6 process definitions and historical data to Camunda. This tool can be used as a plugin in Maven builds, or it can be run from the command line interface.
Specifically, the tool provides the following features:
1. Convert Activiti 5 and Activiti 6 process definition files to a format supported by Camunda, and check the compatibility of the definition.
2. Import Activiti historical data into Camunda.
3. Convert the Activiti engine configuration file to be compatible with the Camunda engine.
4. Generate the Camunda deployment descriptor, which can be used to deploy the Activiti process definition in Camunda.
5. Provide a command line interface to run the migration tool in the console.
Additionally, there are other tools or methods to migrate Activiti process definitions and data, such as manually scripting or using third-party tools. However, using the officially provided tools can ensure compatibility and correctness, and is more convenient and easy to use.
2. How to migrate Flowable to camunda
Migrating the process engine Flowable to the workflow platform Camunda needs to consider the following aspects:
1. Compatibility of process definition: Camunda supports the BPMN 2.0 specification, so the process defined by Flowable needs to be checked and adjusted to ensure compatibility with Camunda.
2. Database compatibility: Both Camunda and Flowable support a variety of databases, but they are different in the data table structure, which requires adjustment and migration of the data table structure.
3. Service integration: If Flowable is integrated with other systems, the service integration of Camunda needs to be redeveloped and adjusted.
4. Application integration: If Flowable is integrated into the application, the application code needs to be rewritten and adjusted to be compatible with Camunda.
Camunda officially provides an open source tool called flowable-to-camunda for migrating Flowable process definitions and historical data to Camunda. The tool can be used as a plugin in Maven builds or run from the command line interface.
Specifically, the tool provides the following features:
1. Convert the Flowable 6 process definition file to a format supported by Camunda, and check the compatibility of the definition.
2. Import Flowable historical data into Camunda.
3. Convert Flowable engine configuration files to be compatible with Camunda engine.
4. Generate the Camunda deployment descriptor, which can be used to deploy the Flowable process definition in Camunda.
5. Provide a command line interface to run the migration tool in the console.
Additionally, other tools or methods can be used to migrate Flowable process definitions and data, such as manually scripting or using third-party tools. However, using the officially provided tools can ensure compatibility and correctness, and is more convenient and easy to use.