Hyperflow monitoring plugin

Description

This is a simple monitoring plugin for HyperFlow (https://github.com/dice-cyfronet/hyperflow/tree/develop <- you need this branch).

Usage

start a dummy message aggregator

while :; do nc -l -p 9002; done

while is required because nc exits after the connection is closed, current version of plugin sends each message in a separate connection.

install this plugin

Monitoring plugin needs to be in scope of hyperflow's require, there are several ways of achieving this, in case of development it's most convenient to have hyperflow-monitoring-plugin cloned in $HOME, and then do any of the following:

• make a symbolic link to hyperflow-monitoring-plugin directory in $HOME/node_modules/ (this is the preferred way for development)
• do npm install hyperflow-monitoring-plugin in $HOME

check configuration

The plugin requires a proper config, it needs to know where to find a metric collector and a rabbitmq-server. All values can be set by environment variables. RabbitMQ needs to have rest interface enabled.

start workflow

In HyperFlow directory: ./bin/hflow run examples/Montage143/workflow.json -s -p hyperflow-monitoring-plugin and observe the message flow in nc.