Skip to main content

zeebe Python gRPC Gateway

Project description

zeebe Python gRPC gateway files

This package contains two gRPC Gateway Files needed to build a zeebe-client or a zeebe-worker (https://zeebe.io/) with Python.

Both files were generated following the instructions on this (now outdated) blog post: https://zeebe.io/blog/2018/11/grpc-generating-a-zeebe-python-client/

How to install and use this package?

pip install zeebe-grpc
import json
import logging
import grpc
from zeebe_grpc import gateway_pb2, gateway_pb2_grpc

with grpc.insecure_channel("localhost:26500") as channel:
    stub = gateway_pb2_grpc.GatewayStub(channel)

    # print the topology of the zeebe cluster
    topology = stub.Topology(gateway_pb2.TopologyRequest())
    print(topology)

    # deploy a process definition
    with open("bpmn/echo.bpmn", "rb") as process_definition_file:
        process_definition = process_definition_file.read()
        process = gateway_pb2.ProcessRequestObject(
            type=gateway_pb2.ProcessRequestObject.BPMN,
            definition=process_definition
        )
    stub.DeployProcess(
        gateway_pb2.DeployProcessRequest(
            processes=[process]
        )
    )

    # start a process instance
    variables = {
        "message": "This is a Message"
    }
    stub.CreateProcessInstance(
        gateway_pb2.CreateProcessInstanceRequest(
            bpmnProcessId="ECHO",
            version=-1,
            variables=json.dumps(variables)
        )
    )

    # start a worker
    activate_jobs_response = stub.ActivateJobs(
        gateway_pb2.ActivateJobsRequest(
            type="echo",
            worker="Python worker",
            timeout=60000,
            maxJobsToActivate=32
        )
    )
    for response in activate_jobs_response:
        for job in response.jobs:
            try:
                print(job.variables)
                stub.CompleteJob(gateway_pb2.CompleteJobRequest(jobKey=job.key, variables=json.dumps({})))
                logging.info("Job Completed")
            except Exception as e:
                stub.FailJob(gateway_pb2.FailJobRequest(jobKey=job.key))
                logging.info(f"Job Failed {e}")

How to (re)build the Python gRPC?

wget https://raw.githubusercontent.com/zeebe-io/zeebe/0.21.1/gateway-protocol/src/main/proto/gateway.proto -O ./zeebe_grpc/gateway.proto

python -m grpc_tools.protoc -I. --python_out=. --grpc_python_out=. ./zeebe_grpc/gateway.proto

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

zeebe_grpc-1.0.0a6.tar.gz (14.1 kB view hashes)

Uploaded Source

Built Distribution

zeebe_grpc-1.0.0a6-py3-none-any.whl (13.5 kB view hashes)

Uploaded Python 3

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page