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📈🤖 Query Grafana dashboards

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# Grafana for Hubot

[![npm version](https://badge.fury.io/js/hubot-grafana.svg)](http://badge.fury.io/js/hubot-grafana) [![Node CI](https://github.com/stephenyeargin/hubot-grafana/actions/workflows/nodejs.yml/badge.svg)](https://github.com/stephenyeargin/hubot-grafana/actions/workflows/nodejs.yml)

Use Hubot to query Grafana dashboards. Inspired by the work of [`hubot-graphite`](https://github.com/github/hubot-scripts/blob/master/src/scripts/graphite.coffee) and [`hubot-graphme`](https://github.com/rick/hubot-graphme).

**Note:** This package requires Grafana 5 or higher. If you need support for an older version, use the `v2.x` releases. As of version `3.x` you must use the `UID` of a given dashboard because of a change in the Grafana API. We strongly recommend using the [`hubot-alias`](https://www.npmjs.com/package/hubot-alias) to save some time in making common requests.

## Installation

In the Hubot project repo, run:

`npm install hubot-grafana --save`

Then add **hubot-grafana** to your `external-scripts.json`:

```json
[
  "hubot-grafana"
]
```

## Configuration Variables

### General Settings

| Configuration Variable            | Required | Description                    |
| --------------------------------- | -------- | ------------------------------ |
| `HUBOT_GRAFANA_HOST`              | **Yes^** | Host for your Grafana 2.x install, e.g. `https://play.grafana.org` |
| `HUBOT_GRAFANA_API_KEY`           | _Yes^^_  | Grafana API key (This can be "Viewer" role.) |
| `HUBOT_GRAFANA_PER_ROOM`          | No       | Allow per room Grafana Host & API key configuration |
| `HUBOT_GRAFANA_QUERY_TIME_RANGE`  | No       | Default time range for queries (defaults to 6h) |
| `HUBOT_GRAFANA_DEFAULT_WIDTH`     | No       | Default width for rendered images (defaults to 1000) |
| `HUBOT_GRAFANA_DEFAULT_HEIGHT`    | No       | Default height for rendered images (defaults to 500) |
| `HUBOT_GRAFANA_DEFAULT_TIME_ZONE` | No       | Default time zone for rendered images (defaults to `""`) |
| `HUBOT_GRAFANA_ORG_ID`            | No       | Default organization id, need for image rendering in new versions of Grafana (defaults to `""`) |
| `HUBOT_GRAFANA_API_ENDPOINT`      | No       | Default rendering api endpoint, need for image rendering in new versions of Grafana  (defaults to `d-solo`) |
| `HUBOT_GRAFANA_USE_THREADS`       | No       | When set to any value, graphs are sent in thread instead of as new message (only Slack supports this for now). |
| `HUBOT_GRAFANA_MAX_RETURNED_DASHBOARDS` | No       | Count of dashboards to return to prevent chat flood (defaults to `25`) |

^ _Not required when `HUBOT_GRAFANA_PER_ROOM` is set to 1._

^^ _Not required for `auth.anonymous` Grafana configurations. All other authentication models will require a user-specific API key._

### Image Hosting Configuration

By default, *hubot-grafana* will assume you intend to render the image, unauthenticated, directly from your Grafana instance. The limitation is that you will only receive a link to those images, but they won't appear as images in most circumstances in your chat client.

You can use one of the following strategies to host the generated images from Grafana.

- [Amazon S3](https://github.com/stephenyeargin/hubot-grafana/wiki/Amazon-S3-Image-Hosting)
- [Slack](https://github.com/stephenyeargin/hubot-grafana/wiki/Slack-Image-Hosting)
- [Rocket.Chat](https://github.com/stephenyeargin/hubot-grafana/wiki/Rocket.Chat-Image-Hosting)
- [Telegram](https://github.com/stephenyeargin/hubot-grafana/wiki/Telegram-Image-Hosting)

### Example Configuration

```
export HUBOT_GRAFANA_HOST=https://play.grafana.org
export HUBOT_GRAFANA_API_KEY=abcd01234deadbeef01234
export HUBOT_GRAFANA_QUERY_TIME_RANGE=1h
export HUBOT_GRAFANA_S3_BUCKET=mybucket
export HUBOT_GRAFANA_S3_BUCKET_REGION=us-east-1
export HUBOT_GRAFANA_S3_PREFIX=graphs
```

## Sample Interaction

```
user1>> hubot graf db 000000011
hubot>> Graphite Carbon Metrics: https://play.grafana.org/render/d-solo/000000011/graphite-carbon-metrics/?panelId=1&width=1000&height=500&from=now-6h - https://play.grafana.org/d/000000011/graphite-carbon-metrics?panelId=1&fullscreen&from=now-6h
```

## Grafana Commands

### Retrieve a Dashboard

Get all panels in a dashboard. In this example, `000000011` is the UID for the given dashboard. To obtain the UID, use `hubot graf list` or `hubot graf search <term>`.

```
hubot graf db 000000011
```

### Retrieve Specific Panels

Get a single panel of a dashboard. In this example, only the third panel would be returned. Note that this is the _visual_ panel ID, counted from top to bottom, left to right, rather than the unique identifier stored with the panel itself.

```
hubot graf db 000000011:3
```

If you want to refer to the API Panel ID, use the `:panel-<identifier>` format to retrieve it. These will not change when the dashboard is re-arranged.

```
hubot graf db 000000011:panel-8
```

Get all panels matching a particular title (case insensitive) in a dashboard. In this case, only panels containing `cpu` would be returned.

```
hubot graf db 000000011:cpu
```

### Retrieve Dashboards in a Time Window

Specify a time range for the dashboard. In this example, the dashboard would be set to display data from 12 hours ago to now.

```
hubot graf db 000000011 now-12hr
```

If you don't want to show the dashboard uptil now, you can add an extra time specification, which will be the `to` time slot. In this example, the dashboard would be set to display data from 24 hours ago to 12 hours ago.

```
hubot graf db 000000011 now-24hr now-12hr
```

You can combine multiple commands in this format as well. In this example, retrieve only the third panel of the `graphite-carbon-metrics` dashboard with a window of eight days ago to yesterday.

```
hubot graf db 000000011:3 now-8d now-1d
```

### Templated Dashboards

Grafana allows dashboards to be set up as templates and accept arguments to generate them through the API. In this example, we get a templated dashboard with the `$host` parameter set to `carbon-a`

```
hubot graf db 000000011 host=carbon-a
```

### Utility Commands

This command retrieves all dashboards and their slugs so they can be used in other commands.

```
hubot graf list
```

Dashboards can be tagged for easier reference. In this example, return all dashboards tagged with `production`.

```
hubot graf list production
```

Similarly, you can search the list of dashboards. In this example, return all dashboards that contain the word `elb`.

```
hubot graf search elb
```

### Per room configuration

When `HUBOT_GRAFANA_PER_ROOM` is set to '1' the following commands configure the Grafana Host and API key for the room in which the commands are issued.

```
hubot graf set host https://play.grafana.org
hubot graf set api_key abcd01234deadbeef01234
```

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