Deploying workflows - Getting started | Serverless Logic

Deploying workflows in Dev mode
Deploying workflows in Preview mode
Editing a workflow
Testing a workflow
Troubleshooting a workflow
Deleting a workflow

You can deploy the Serverless Logic workflows on the cluster in two modes: Dev mode and Preview mode.

Deploying workflows in Dev mode

You can deploy your local workflow on OpenShift Container Platform in Dev mode. You can use this deployment to experiment and modify your workflow directly on the cluster, seeing changes almost immediately. Dev mode is designed for development and testing purposes. It is ideal for initial development stages and for testing new changes.

Prerequisites

You have OpenShift Serverless Logic Operator installed on your cluster.
You have access to a OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Create the workflow configuration YAML file.

Example workflow-dev.yaml file

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlow
metadata:
  name: greeting (1)
  annotations:
    sonataflow.org/description: Greeting example on k8s!
    sonataflow.org/version: 0.0.1
    sonataflow.org/profile: dev (2)
spec:
  flow:
    start: ChooseOnLanguage
    functions:
      - name: greetFunction
        type: custom
        operation: sysout
    states:
      - name: ChooseOnLanguage
        type: switch
        dataConditions:
          - condition: "${ .language == \"English\" }"
            transition: GreetInEnglish
          - condition: "${ .language == \"Spanish\" }"
            transition: GreetInSpanish
        defaultCondition: GreetInEnglish
      - name: GreetInEnglish
        type: inject
        data:
          greeting: "Hello from JSON Workflow, "
        transition: GreetPerson
      - name: GreetInSpanish
        type: inject
        data:
          greeting: "Saludos desde JSON Workflow, "
        transition: GreetPerson
      - name: GreetPerson
        type: operation
        actions:
          - name: greetAction
            functionRef:
              refName: greetFunction
              arguments:
                message:  ".greeting + .name"
        end: true

1	is a workflow_name
2	indicates that you must deploy the workflow in Dev mode

To deploy the application, apply the YAML file by entering the following command:
```
$ oc apply -f <filename> -n <your_namespace>
```
Verify the deployment and check the status of the deployed workflow by entering the following command:
```
$ oc get workflow -n <your_namespace> -w
```
Ensure that your workflow is listed and the status is Running or Completed.
Edit the workflow directly in the cluster by entering the following command:
```
$ oc edit sonataflow <workflow_name> -n <your_namespace>
```
After editing, save the changes. The OpenShift Serverless Logic Operator detects the changes and updates the workflow accordingly.

Verification

To ensure the changes are applied correctly, verify the status and logs of the workflow by entering the following commands:
1. View the status of the workflow by running the following command:
  $ oc get sonataflows -n <your_namespace>
2. View the workflow logs by running the following command:
  $ oc logs <workflow_pod_name> -n <your_namespace>

Next steps

After completing the testing, delete the resources to avoid unnecessary usage by running the following command:
```
$ oc delete sonataflow <workflow_name> -n <your_namespace>
```

Deploying workflows in Preview mode

You can deploy your local workflow on OpenShift Container Platform in Preview mode. This allows you to experiment and modify your workflow directly on the cluster, seeing changes almost immediately. Preview mode is used for final testing and validation before deploying to production. It also ensures that workflows will run smoothly in a production-like setting.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

To deploy a workflow in Preview mode, OpenShift Serverless Logic Operator uses the build system on OpenShift Container Platform, which automatically creates the image for deploying your workflow.

The following sections explain how to build and deploy your workflow on a cluster using the OpenShift Serverless Logic Operator with a SonataFlow custom resource.

Configuring workflows in Preview mode

Configuring the workflow base builder image

If your scenario requires strict policies for image usage, such as security or hardening constraints, replace the default image used by the OpenShift Serverless Logic Operator to build the final workflow container image.

By default, the OpenShift Serverless Logic Operator uses the image distributed in the official Red Hat Registry to build workflows. If your scenario requires strict policies for image use, such as security or hardening constraints, you can replace the default image.

To change this image, you edit the SonataFlowPlatform custom resource (CR) in the namespace where you deployed your workflows.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

List the SonataFlowPlatform resources in your namespace by running the following command:
```
$ oc get sonataflowplatform -n <your_namespace> (1)
```
1 Replace <your_namespace> with the name of your namespace.

Patch the SonataFlowPlatform resource with the new builder image by running the following command:

$ oc patch sonataflowplatform <name> --patch 'spec:\n  build:\n    config:\n      baseImage: <your_new_image_full_name_with_tag>' -n <your_namespace>

Verification

Verify that the SonataFlowPlatform CR has been patched correctly by running the following command:
```
$ oc describe sonataflowplatform <name> -n <your_namespace> (1)
```
1 Replace <name> with the name of your SonataFlowPlatform resource and <your_namespace> with the name of your namespace.

Ensure that the baseImage field under spec.build.config reflects the new image.

Customization for the base builder Dockerfile

The OpenShift Serverless Logic Operator uses the logic-operator-rhel8-builder-config config map custom resource (CR) in its openshift-serverless-logicOpenShift Serverless Logic Operator installation namespace to configure and run the workflow build process. You can change the Dockerfile entry in this config map to adjust the Dockerfile to your needs.

Modifying the Dockerfile can break the build process.

This example is for reference only. The actual version might be slightly different. Do not use this example for your installation.

Example logic-operator-rhel8-builder-config config map CR

apiVersion: v1
data:
  DEFAULT_WORKFLOW_EXTENSION: .sw.json
  Dockerfile: |
    FROM registry.redhat.io/openshift-serverless-1/logic-swf-builder-rhel8:1.33.0 AS builder

    # Variables that can be overridden by the builder
    # To add a Quarkus extension to your application
    ARG QUARKUS_EXTENSIONS
    # Args to pass to the Quarkus cli add extension command
    ARG QUARKUS_ADD_EXTENSION_ARGS
    # Additional java/mvn arguments to pass to the builder
    ARG MAVEN_ARGS_APPEND

    # Copy from build context to skeleton resources project
    COPY --chown=1001 . ./resources

    RUN /home/kogito/launch/build-app.sh ./resources

    #=============================
    # Runtime Run
    #=============================
    FROM registry.access.redhat.com/ubi9/openjdk-17:latest

    ENV LANG='en_US.UTF-8' LANGUAGE='en_US:en'

    # We make four distinct layers so if there are application changes, the library layers can be re-used
    COPY --from=builder --chown=185 /home/kogito/serverless-workflow-project/target/quarkus-app/lib/ /deployments/lib/
    COPY --from=builder --chown=185 /home/kogito/serverless-workflow-project/target/quarkus-app/*.jar /deployments/
    COPY --from=builder --chown=185 /home/kogito/serverless-workflow-project/target/quarkus-app/app/ /deployments/app/
    COPY --from=builder --chown=185 /home/kogito/serverless-workflow-project/target/quarkus-app/quarkus/ /deployments/quarkus/

    EXPOSE 8080
    USER 185
    ENV AB_JOLOKIA_OFF=""
    ENV JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager"
    ENV JAVA_APP_JAR="/deployments/quarkus-run.jar"
kind: ConfigMap
metadata:
  name: sonataflow-operator-builder-config
  namespace: sonataflow-operator-system

Changing resource requirements

You can specify resource requirements for the internal builder pods, by creating or editing a SonataFlowPlatform resource in the workflow namespace.

Example SonataFlowPlatform resource

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlowPlatform
metadata:
  name: sonataflow-platform
spec:
  build:
    template:
      resources:
        requests:
          memory: "64Mi"
          cpu: "250m"
        limits:
          memory: "128Mi"
          cpu: "500m"

Only one SonataFlowPlatform resource is allowed per namespace. Fetch and edit the resource that the OpenShift Serverless Logic Operator created for you instead of trying to create another resource.

You can fine-tune the resource requirements for a particular workflow. Each workflow instance has a SonataFlowBuild instance created with the same name as the workflow. You can edit the SonataFlowBuild custom resource (CR) and specify the parameters as follows:

Example of SonataFlowBuild CR

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlowBuild
metadata:
  name: my-workflow
spec:
  resources:
    requests:
      memory: "64Mi"
      cpu: "250m"
    limits:
      memory: "128Mi"
      cpu: "500m"

These parameters apply only to new build instances.

Passing arguments to the internal builder

You can customize the build process by passing build arguments to the SonataFlowBuild instance or setting default build arguments in the SonataFlowPlatform resource.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Check for the existing SonataFlowBuild instance by running the following command:
```
$ oc get sonataflowbuild <name> -n <namespace> (1)
```
1 Replace <name> with the name of your SonataFlowBuild instance and <namespace> with your namespace.
Add build arguments to the SonataFlowBuild instance by running the following command:
```
$ oc edit sonataflowbuild <name> -n <namespace>
```

Add the desired build arguments under the .spec.buildArgs field of the SonataFlowBuild instance:

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlowBuild
metadata:
  name: <name>  (1)
spec:
  buildArgs:
    - name: <argument_1>
      value: <value_1>
    - name: <argument_2>
      value: <value_2>

1	The name of the existing `SonataFlowBuild` instance.

Save the file and exit.

A new build with the updated configuration starts.
Set the default build arguments in the SonataFlowPlatform resource by running the following command:
```
$ oc edit sonataflowplatform <name> -n <namespace>
```

Add the desired build arguments under the .spec.buildArgs field of the SonataFlowPlatform resource:

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlowPlatform
metadata:
  name: <name> (1)
spec:
  build:
    template:
      buildArgs:
        - name: <argument_1>
          value: <value_1>
        - name: <argument_2>
          value: <value_2>

1	The name of the existing `SonataFlowPlatform` resource.

Save the file and exit.

Setting environment variables in the internal builder

You can set environment variables to the SonataFlowBuild internal builder pod. These variables are valid for the build context only and are not set on the final built workflow image.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Check for existing SonataFlowBuild instance by running the following command:
```
$ oc get sonataflowbuild <name> -n <namespace>
```
Replace <name> with the name of your SonataFlowBuild instance and <namespace> with your namespace.

Edit the SonataFlowBuild instance by running the following command:

$ oc edit sonataflowbuild <name> -n <namespace>

Example SonataFlowBuild instance

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlowBuild
metadata:
  name: <name>
spec:
  envs:
    - name: <env_variable_1>
      value: <value_1>
    - name: <env_variable_2>
      value: <value_2>

Save the file and exit.

A new with the updated configuration starts.

Alternatively, you can set the enviroments in the SonataFlowPlatform, so that every new build instances will use it as a template.

Example SonataFlowPlatform instance

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlowPlatform
metadata:
  name: <name>
spec:
  build:
    template:
      envs:
        - name: <env_variable_1>
          value: <value_1>
        - name: <env_variable_2>
          value: <value_2>

Changing the base builder image

You can modify the default builder image used by the OpenShift Serverless Logic Operator by editing the logic-operator-rhel8-builder-config config map.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Edit the logic-operator-rhel8-builder-config config map by running the following command:
```
$ oc edit cm/logic-operator-rhel8-builder-config -n openshift-serverless-logic
```

Modify the dockerfile entry.

In your editor, locate the Dockerfile entry and change the first line to the desired image.

Example

data:
  Dockerfile: |
    FROM registry.redhat.io/openshift-serverless-1/logic-swf-builder-rhel8:1.33.0
    # Change the image to the desired one

Save the changes.

Building and deploying your workflow

You can create a SonataFlow custom resource (CR) on OpenShift Container Platform and OpenShift Serverless Logic Operator builds and deploys the workflow.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Create a workflow YAML file similar to the following:

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlow
metadata:
  name: greeting
  annotations:
    sonataflow.org/description: Greeting example on k8s!
    sonataflow.org/version: 0.0.1
spec:
  flow:
    start: ChooseOnLanguage
    functions:
      - name: greetFunction
        type: custom
        operation: sysout
    states:
      - name: ChooseOnLanguage
        type: switch
        dataConditions:
          - condition: "${ .language == \"English\" }"
            transition: GreetInEnglish
          - condition: "${ .language == \"Spanish\" }"
            transition: GreetInSpanish
        defaultCondition: GreetInEnglish
      - name: GreetInEnglish
        type: inject
        data:
          greeting: "Hello from JSON Workflow, "
        transition: GreetPerson
      - name: GreetInSpanish
        type: inject
        data:
          greeting: "Saludos desde JSON Workflow, "
        transition: GreetPerson
      - name: GreetPerson
        type: operation
        actions:
          - name: greetAction
            functionRef:
              refName: greetFunction
              arguments:
                message:  ".greeting+.name"
        end: true

Apply the SonataFlow workflow definition to your OpenShift Container Platform namespace by running the following command:
```
$ oc apply -f <workflow-name>.yaml -n <your_namespace>
```
Example command for the greetings-workflow.yaml file:
```
$ oc apply -f greetings-workflow.yaml -n workflows
```
List all the build configurations by running the following command:
```
$ oc get buildconfigs -n workflows
```
Get the logs of the build process by running the following command:
```
$ oc logs buildconfig/<workflow-name> -n <your_namespace>
```
Example command for the greetings-workflow.yaml file:
```
$ oc logs buildconfig/greeting -n workflows
```

Verification

To verify the deployment, list all the pods by running the following command:
```
$ oc get pods -n <your_namespace>
```
Ensure that the pod corresponding to your workflow is running.
Check the running pods and their logs by running the following command:
```
$ oc logs pod/<pod-name> -n workflows
```

Verifying workflow deployment

You can verify that your OpenShift Serverless Logic workflow is running by performing a test HTTP call from the workflow pod.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Create a workflow YAML file similar to the following:

apiVersion: sonataflow.org/v1alpha08
kind: SonataFlow
metadata:
  name: greeting
  annotations:
    sonataflow.org/description: Greeting example on k8s!
    sonataflow.org/version: 0.0.1
spec:
  flow:
    start: ChooseOnLanguage
    functions:
      - name: greetFunction
        type: custom
        operation: sysout
    states:
      - name: ChooseOnLanguage
        type: switch
        dataConditions:
          - condition: "${ .language == \"English\" }"
            transition: GreetInEnglish
          - condition: "${ .language == \"Spanish\" }"
            transition: GreetInSpanish
        defaultCondition: GreetInEnglish
      - name: GreetInEnglish
        type: inject
        data:
          greeting: "Hello from JSON Workflow, "
        transition: GreetPerson
      - name: GreetInSpanish
        type: inject
        data:
          greeting: "Saludos desde JSON Workflow, "
        transition: GreetPerson
      - name: GreetPerson
        type: operation
        actions:
          - name: greetAction
            functionRef:
              refName: greetFunction
              arguments:
                message:  ".greeting+.name"
        end: true

Create a route for the workflow service by running the following command:
```
$ oc expose svc/<workflow-service-name> -n workflows
```
This command creates a public URL to access the workflow service.

Set an environment variable for the public URL by running the following command:

$ WORKFLOW_SVC=$(oc get route/<workflow-service-name> -n <namespace> --template='{{.spec.host}}')

Make an HTTP call to the workflow to send a POST request to the service by running the following command:

$ curl -X POST -H 'Content-Type: application/json' -H 'Accept: application/json' -d '{<"your": "json_payload">}' http://$WORKFLOW_SVC/<endpoint>

Example output

{
  "id": "b5fbfaa3-b125-4e6c-9311-fe5a3577efdd",
  "workflowdata": {
    "name": "John",
    "language": "English",
    "greeting": "Hello from JSON Workflow, "
  }
}

This output shows an example of the expected response if the workflow is running.

Restarting a build

To restart a build, you can add or edit the sonataflow.org/restartBuild: true annotation in the SonataFlowBuild instance. Restarting a build is necessary if there is a problem with your workflow or the initial build revision.

Prerequisites

You have an OpenShift Serverless Logic Operator installed on your cluster.
You have access to an OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Check if the SonataFlowBuild instance exists by running the following command:
```
$ oc get sonataflowbuild <name> -n <namespace>
```
Edit the SonataFlowBuild instance by running the following command:
```
$ oc edit sonataflowbuild/<name> -n <namespace>
```
Replace <name> with the name of your SonataFlowBuild instance and <namespace> with the namespace where your workflow is deployed.
Add the sonataflow.org/restartBuild: true annotation to restart the build.
```
apiVersion: sonataflow.org/v1alpha08
kind: SonataFlowBuild
metadata:
  name: <name>
  annotations:
    sonataflow.org/restartBuild: true
```
This action triggers the OpenShift Serverless Logic Operator to start a new build of the workflow.
To monitor the build process, check the build logs by running the following command:
```
$ oc logs buildconfig/<name> -n <namespace>
```
Replace <name> with the name of your SonataFlowBuild instance and <namespace> with the namespace where your workflow is deployed.

Editing a workflow

When the OpenShift Serverless Logic Operator deploys a workflow service, it creates two config maps to store runtime properties:

User properties: Defined in a ConfigMap named after the SonataFlow object with the suffix -props. For example, if your workflow name is greeting, then the ConfigMap name is greeting-props.
Managed properties: Defined in a ConfigMap named after the SonataFlow object with the suffix -managed-props. For example, if your workflow name is greeting, then the ConfigMap name is greeting-managed-props.

Managed properties always override any user property with the same key name and cannot be edited by the user. Any change would be overwritten by the Operator at the next reconciliation cycle.

Prerequisites

You have OpenShift Serverless Logic Operator installed on your cluster.
You have access to a OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Open and edit the ConfigMap by running the following command:
```
$ oc edit cm <workflow_name>-props -n <namespace>
```
Replace <workflow_name> with the name of your workflow and <namespace> with the namespace where your workflow is deployed.
Add the properties in the application.properties section.
Example of a workflow properties stored within a ConfigMap:
```
apiVersion: v1
kind: ConfigMap
metadata:
  labels:
    app: greeting
  name: greeting-props
  namespace: default
data:
  application.properties: |
    my.properties.key = any-value
```
Ensure the properties are correctly formatted to prevent the Operator from replacing your configuration with the default one.
After making the necessary changes, save the file and exit the editor.

Testing a workflow

To verify that your OpenShift Serverless Logic workflow is running correctly, you can perform a test HTTP call from the relevant pod.

Prerequisites

You have OpenShift Serverless Logic Operator installed on your cluster.
You have access to a OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

To create a route for the specified service in your namespace by running the following command:
```
$ oc expose svc <service_name> -n <namespace>
```
To fetch the URL for the newly exposed service by running the following command:
```
$ WORKFLOW_SVC=$(oc get route/<service_name> --template='{{.spec.host}}')
```

Perform a test HTTP call and send a POST request by running the following command:

$ curl -X POST -H 'Content-Type:application/json' -H 'Accept:application/json' -d '<request_body>' http://$WORKFLOW_SVC/<endpoint>

Verify the response to ensure the workflow is functioning as expected.

Troubleshooting a workflow

The OpenShift Serverless Logic Operator deploys its pod with health check probes to ensure the Workflow runs in a healthy state. If changes cause these health checks to fail, the pod will stop responding.

Prerequisites

You have OpenShift Serverless Logic Operator installed on your cluster.
You have access to a OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Check the workflow status by running the following command:

$ oc get workflow <name> -o jsonpath={.status.conditions} | jq .

To fetch and analyze the the logs from the workflow’s deployment, run the following command:
```
$ oc logs deployment/<workflow_name> -f
```

Deleting a workflow

You can use the oc delete command to delete your OpenShift Serverless Logic workflow in your current directory.

Prerequisites

You have OpenShift Serverless Logic Operator installed on your cluster.
You have access to a OpenShift Serverless Logic project with the appropriate roles and permissions to create applications and other workloads in OpenShift Container Platform.
You have installed the OpenShift cli (oc).

Procedure

Verify that you have the correct file that defines the Workflow you want to delete. For example, workflow.yaml.
Run the oc delete command to remove the Workflow from your specified namespace:
```
$ oc delete -f <your_file> -n <your_namespace>
```
Replace <your_file> with the name of your Workflow file and <your_namespace> with your namespace.