Snap publisher plugin - File

This plugin supports pushing metrics into a local file

It's used in the Snap framework.

1. Getting Started

• System Requirements
• Installation
• Configuration and Usage

2. Documentation

• Examples
• Roadmap

3. Community Support
4. Contributing
5. License
6. Acknowledgements

Getting Started

System Requirements

• golang 1.7+ (needed only for building)

Installation

Download File plugin binary:

You can get the pre-built binaries for your OS and architecture at plugin's GitHub Releases page.

To build the plugin binary:

Fork https://github.com/intelsdi-x/snap-plugin-publisher-file

Clone repo into $GOPATH/src/github.com/intelsdi-x/:

$ git clone https://github.com/<yourGithubID>/snap-plugin-publisher-file.git

Build the plugin by running make within the cloned repo:

$ make

This builds the plugin in ./build

Configuration and Usage

• Set up the Snap framework

Documentation

To use this plugin you have to specify a config with the location of the file you want to write to.

# JSON
"config": {
    "file": "/tmp/snap_published_file.json"
}

# YAML
config: 
    file: "/tmp/snap_published_file.json"

The plugin will write out all metrics serialized as JSON to the specified file. An example of this output is below:

[
  {
    "timestamp": "2016-07-25T11:27:59.795513984+02:00",
    "namespace": "/intel/mock/host0/baz",
    "data": 86,
    "unit": "",
    "tags": {
      "plugin_running_on": "my-machine"
    },
    "version": 0,
    "last_advertised_time": "0001-01-01T00:00:00Z"
  },
  {
    "timestamp": "2016-07-25T11:27:59.795514856+02:00",
    "namespace": "/intel/mock/host1/baz",
    "data": 70,
    "unit": "",
    "tags": {
      "plugin_running_on": "my-machine"
    },
    "version": 0,
    "last_advertised_time": "0001-01-01T00:00:00Z"
  },
  {
    "timestamp": "2016-07-25T11:27:59.795548989+02:00",
    "namespace": "/intel/mock/bar",
    "data": 82,
    "unit": "",
    "tags": {
      "plugin_running_on": "my-machine"
    },
    "version": 0,
    "last_advertised_time": "2016-07-25T11:27:21.852064032+02:00"
  },
  {
    "timestamp": "2016-07-25T11:27:59.795549268+02:00",
    "namespace": "/intel/mock/foo",
    "data": 72,
    "unit": "",
    "tags": {
      "plugin_running_on": "my-machine"
    },
    "version": 0,
    "last_advertised_time": "2016-07-25T11:27:21.852063228+02:00"
  }
]

Examples

Example of running psutil collector plugin, movingaverage processor plugin, and writing data as a JSON to file:

Set up the Snap framework

Ensure snap daemon is running:

• initd: service snap-telemetry start
• systemd: systemctl start snap-telemetry
• command line: sudo snapteld -l 1 -t 0 &

Download and load Snap plugins:

$ wget http://snap.ci.snap-telemetry.io/plugins/snap-plugin-publisher-file/latest/linux/x86_64/snap-plugin-publisher-file
$ wget http://snap.ci.snap-telemetry.io/plugins/snap-plugin-processor-movingaverage/latest/linux/x86_64/snap-plugin-processor-movingaverage
$ wget http://snap.ci.snap-telemetry.io/plugins/snap-plugin-collector-psutil/latest/linux/x86_64/snap-plugin-collector-psutil
$ snaptel plugin load snap-plugin-publisher-file
$ snaptel plugin load snap-plugin-processor-movingaverage
$ snaptel plugin load snap-plugin-collector-psutil

Create a task manifest (see exemplary tasks), for example psutil-movingaverage-file.json with following content:

{
  "version": 1,
  "schedule": {
    "type": "simple",
    "interval": "1s"
  },
  "max-failures": 10,
  "workflow": {
    "collect": {
      "metrics": {
        "/intel/psutil/load/load1": {},
        "/intel/psutil/load/load15": {},
        "/intel/psutil/load/load5": {},
        "/intel/psutil/vm/available": {},
        "/intel/psutil/vm/free": {},
        "/intel/psutil/vm/used": {}
      },
      "process": [
        {
          "plugin_name": "movingaverage",
          "config": {
            "MovingAvgBufLength": 5
          }
        }
      ],
      "publish": [
        {
          "plugin_name": "file",
          "config": {
            "file": "/tmp/snap-psutil-movingaverage-file.log"
          }
        }
      ]
    }
  }
}

Create a task:

$ snaptel task create -t psutil-movingaverage-file.json

See JSON file containing the published data:

$ tailf /tmp/snap-psutil-movingaverage-file.json

To stop previously created task:

$ snaptel task stop <task_id>

Roadmap

There isn't a current roadmap for this plugin. However, if additional output types are wanted, please open an issue or submit a pull request as mentioned below.

If you have a feature request, please add it as an issue and/or submit a pull request.

Community Support

This repository is one of many plugins in Snap, a powerful telemetry framework. See the full project at http://github.com/intelsdi-x/snap To reach out to other users, head to the main framework

Contributing

We love contributions!

There's more than one way to give back, from examples to blogs to code updates. See our recommended process in CONTRIBUTING.md.

License

Snap, along with this plugin, is an Open Source software released under the Apache 2.0 License.

Acknowledgements

Original code from the Snap repo.

Additional code written by:

• Author: Taylor Thomas

And thank you! Your contribution, through code and participation, is incredibly important to us.