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metamask-extension/development/README.md
PeterYinusa 273c1dedb7
Docs - segment metrics (#14435)
* expand docs for metrics

* link to docs

* link to docs

* remove obsolete docs

* fix broken link
2022-04-19 16:15:41 +01:00

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# Development
Several files which are needed for developing on MetaMask.
Usually each file or directory contains information about its scope / usage.
## Segment
### Debugging with the Mock Segment API
To start the [Mock Segment API](./mock-segment.js):
- Add/replace the `SEGMENT_HOST` and `SEGMENT_WRITE_KEY` variables in `.metamaskrc`
```
SEGMENT_HOST='http://localhost:9090'
SEGMENT_WRITE_KEY='FAKE'
```
- Build the project to the `./dist/` folder with `yarn dist`
- Run the Mock Segment API from the command line
```
node development/mock-segment.js
```
Events triggered whilst using the extension will be logged to the console of the Mock Segment API.
More information on the API and its usage can be found [here](./mock-segment.js#L28).
### Debugging in Segment
To debug in a production Segment environment:
- Create a free account on [Segment](https://segment.com/)
- Create a New Workspace
- Add a Source (Node.js)
- Copy the `Write Key` from the API Keys section under Settings
- Add/replace the `SEGMENT_HOST` and `SEGMENT_WRITE_KEY` variables in `.metamaskrc`
```
SEGMENT_HOST='https://api.segment.io'
SEGMENT_WRITE_KEY='COPIED_WRITE_KEY'
```
- Build the project to the `./dist/` folder with `yarn dist`
Events triggered whilst using the extension will be displayed in Segment's Debugger.
### Debugging Segment requests in MetaMask
To opt in to MetaMetrics;
- Unlock the extension
- Open the Account menu
- Click the `Settings` menu item
- Click the `Security & Privacy` menu item
- Toggle the `Participate in MetaMetrics` menu option to the `ON` position
You can inspect the requests in the `Network` tab of your browser's Developer Tools (background.html)
by filtering for `POST` requests to `/v1/batch`. The full url will be `http://localhost:9090/v1/batch`
or `https://api.segment.io/v1/batch` respectively.