Go Pub/Sub UI

This tool eases debugging Google Clouds Pub/Sub with a simple UI.

Features include:

Subscription to given topics
Automatic creation of non-existent topics or subscriptions
Publishing messages from UI to configured topics
Configurable pre-defined payloads per topic
Live update of received messages
Multi-projects

Configuration

Following environment variables may be set:

Variable	Usage	Default value
`GOPUBSUB_CONFIG`	Config file path	`config.yaml` (within `/go/src/app/` in Docker image)
`GOPUBSUB_PORT`	Listening HTTP port	`8080`
`GOPUBSUB_MAX_MESSAGES`	Only keep last n messages per topic	`10`
`GOOGLE_APPLICATION_CREDENTIALS`	Path to JSON credentials file	none
`PUBSUB_EMULATOR_HOST`	Host of emulator (see below)	none
`GOOGLE_CLOUD_PROJECT`	Default project name	`default-project`

The `config.yaml` file

To get GoPubSub working, you'll need to create config.yaml file with your topics and subscriptions info:

topics:
  -
    name: my-topic
    project: my-gcp-project
    subscription: my-subscription
  -
    name: my-other-topic
    project: other-gcp-project
    subscription: my-other-subscription
    payloads:
      -
        name: hello
        payload: |
          {"hello": "world"}
      -
        name: hello-again
        payload: |
          {"hello": "world again"}
  -
    name: my-last-topic

Note that all non-existant topic or subscription will be created. If no subscription is given for a topic, it will be created as sub-<topic-name>.

Usage

Using binary

Download latest release for your OS from the releases page, or run:

go get -u github.com/clickandmortar/gopubsub

Then:

export GOPUBSUB_CONFIG="/path/to/config.yaml"

# To use local emulator
export PUBSUB_EMULATOR_HOST=localhost:8085

# To use actual Pub/Sub service
export GOOGLE_APPLICATION_CREDENTIALS="/path/to/application_default_credentials.json"

gopubsub

And open http://localhost:8080.

Using Docker image

docker pull clickandmortar/gopubsub
docker run -d \
 -v $(pwd)/config.yaml:/go/src/app/config.yaml \
 -p 8080:8080 \
 --name="gopubsub" \
 -e PUBSUB_EMULATOR_HOST=pubsub:8085 \
 clickandmortar/gopubsub

With docker-compose

docker-compose up -d

From source

go run main.go

Build

Binaries

make

Linux and macOS (Darwin) binaries will be available under the bin/ directory.

Docker image

make docker

Improvements

Credits

This app is heavily inspired by Google's sample.

cpolzer/GoPubSub