Camunda (1): Camunda Platform and Modeler create workflow
Foreword: Because the company has a project that requires the use of a workflow engine, it inspected various workflow engines on the market, compared their advantages and disadvantages, and finally chose the Camunda workflow engine. I didn't know much about the Camunda workflow engine before, so I recorded the process of learning the Camunda workflow engine and integrating the use of the Camunda workflow engine in the springboot project. This article does not involve any code, but simply creates a workflow from the tools officially provided by Camunda, observes the flow of the process, and makes a simple preliminary understanding of the flow review of the workflow.
1. Camunda Platform and Modeler
1.1 Download Camunda Platform and Modeler
Camunda Platform: At present, the official website provides a free trial of Camunda Platform 8 SaaS, and the only way to download and install Camunda Platform 8 Self-Managed is docker. Camunda Platform Run is a pre-packaged distribution of Camunda Platform, including Camunda webapps (Cockpit, Tasklist, Admin), which has the features of our local test, so here we choose to download Camunda Platform Run.
Camunda Platform Run download link: https://downloads.camunda.cloud/release/camunda-bpm/run/
Camunda Modeler download address: https://camunda.com/download/modeler/
1.2 Unzip and start Platform Run
To start, double-click start.bat (Windows system), (Linux or Mac) click start.sh to start
After successful startup, visit Platform Run:
http://localhost:8080/camunda/app/welcome/default/#!/loginCamunda's default account password is demo / demo, which is configured in the configuration file.
Entering the Camunda management platform provides a web management interface. The main functions of the management interface include:
Cockpit - manage process process and process instances process instances
Tasklist - manage specific tasks in the process process (navigate to specific tasks, provide form input, repair process instances, etc.)
Admin - manage users, organization groups, authorizations
Enter the Admin module to create a user, which is used for the review of the workflow created later
After completing the settings of each node, the workflow has a History cleanup attribute that is required
P90D: Indicates that historical data will be cleaned up within 90 days
In addition, select the corresponding platform version in the lower left corner to deploy the workflow. One thing to note here is that I didn’t pay attention to version deployment before. When running workflow tasks on the platform, I found that the user of the corresponding workflow audit node has no agency tasks and cannot audit the flow. So it is recommended to choose to install the same platform version yourself.
1.4 Check whether the deployment is successful
Here, because I have deployed other workflows before, here is 2. If no workflow has been deployed before, then it will be 1 after the new workflow is successfully deployed.
2. Camunda Platform runs the created workflow
2.1 Start the workflow process
The demo user enters the Tasklist module of the Platform to start the process.
Create a name for the process, then add some variables to say who asked for leave to start the process.
2.2 Go to the corresponding user for review
Because the user of the first audit node set before this process is demo, we can see this audit pending under the demo user
Before the demo user is audited, the user to be audited by the next node is user1, and then log in to user1 for auditing. And so on until all nodes are audited
