Adds metrics documentation (closes #5).
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Chuck Harmston
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[](https://circleci.com/gh/mozilla/send)
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**Docs:** [Docker](docs/docker.md), [Metrics](docs/metrics.md)
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## What it does
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A P2P file sharing experiment which allows you to send encrypted files to other users.
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# Send Metrics
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The metrics collection and analysis plan for Send, a forthcoming Test Pilot experiment.
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## Analysis
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Data collected by Send will be used to answer the following high-level questions:
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- Do users send files?
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- How often? How many?
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- What is the retention?
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- What is the distribution of senders?
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- How do recipients interact with promotional UI elements?
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- Are file recipients converted to file senders?
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- Are non-Firefox users converted to Firefox users?
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- Where does it go wrong?
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- How often are there errors in uploading or downloading files?
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- What types of errors to users commonly see?
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- At what point do errors affect retention?
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## Collection
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Data will be collected with Google Analytics and follow [Test Pilot standards](https://github.com/mozilla/testpilot/blob/master/docs/experiments/ga.md) for reporting.
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### Custom Metrics
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- `cm1` - the size of the file, in bytes.
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- `cm2` - the amount of time it took to complete the file transfer, in milliseconds. Only include if the file completed transferring (ref: `cd2`).
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- `cm3` - the rate of the file transfer, in bytes per second. This is computed by dividing `cm1` by `cm2`, not by monitoring transfer speeds. Only include if the file completed transferring (ref: `cd2`).
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- `cm4` - the amount of time until the file will expire, in milliseconds.
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- `cm5` - the number of files the user has ever uploaded.
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- `cm6` - the number of unexpired files the user has uploaded.
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- `cm7` - the number of files the user has ever downloaded.
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### Custom Dimensions
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- `cd1` - the method by which the user initiated an upload. One of `drag`, `click`.
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- `cd2` - the reason that the file transfer stopped. One of `completed`, `errored`, `cancelled`.
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- `cd3` - the destination of a link click. One of `experiment-page`, `download-firefox`, `twitter`, `github`, `cookies`, `terms`, `privacy`, `about`, `legal`, `mozilla`.
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- `cd4` - from where the URL for a file was copied. One of `finished-screen`, `file-list`.
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- `cd5` - the referring location. One of `completed-download`, `errored-download`, `cancelled-download`, `completed-upload`, `errored-upload`, `cancelled-upload`, `testpilot`, `external`.
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- `cd6` - the location from which the user copied the URL to an upload file. One of `success-screen`, `upload-list`.
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- `cd7` - identifying information about an error. Exclude if there is no error involved. **TODO:** enumerate a list of possibilities.
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### Events
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_NB:_ due to how files are being tracked, there are no events indicating file expiry. This carries some risk: most notably, we can only derive expiration rates by looking at download rates, which is prone to skew if there are problems in data collection.
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#### `upload-started`
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Triggered whenever a user begins uploading a file. Includes:
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- `ec` - `sender`
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- `ea` - `upload-started`
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- `cm1`
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- `cm5`
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- `cm6`
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- `cm7`
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- `cd1`
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- `cd5`
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#### `upload-stopped`
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Triggered whenever a user stops uploading a file. Includes:
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- `ec` - `sender`
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- `ea` - `upload-stopped`
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- `cm1`
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- `cm2`
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- `cm3`
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- `cm5`
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- `cm6`
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- `cm7`
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- `cd1`
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- `cd2`
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- `cd7`
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#### `download-started`
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Triggered whenever a user begins downloading a file. Includes:
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- `ec` - `recipient`
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- `ea` - `download-started`
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- `cm1`
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- `cm4`
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- `cm5`
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- `cm6`
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- `cm7`
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#### `download-stopped`
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Triggered whenever a user stops downloading a file.
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- `ec` - `recipient`
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- `ea` - `download-stopped`
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- `cm1`
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- `cm2` (if possible and applicable)
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- `cm3` (if possible and applicable)
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- `cm5`
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- `cm6`
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- `cm7`
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- `cd2`
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- `cd7`
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#### `exited`
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Fired whenever a user follows a link external to Send.
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- `ec` - `recipient`, `sender`, or `other`, as applicable.
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- `ea` - `exited`
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- `cd3`
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#### `upload-deleted`
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Fired whenever a user deletes a file they’ve uploaded.
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- `ec` - `sender`
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- `ea` - `upload-deleted`
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- `cm1`
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- `cm2`
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- `cm3`
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- `cm4`
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- `cm5`
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- `cm6`
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- `cm7`
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- `cd1`
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#### `copied`
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Fired whenever a user copies the URL of an upload file.
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- `ec` - `sender`
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- `ea` - `copied`
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- `cd6`
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#### `restarted`
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Fired whenever the user interrupts any part of funnel to return to the start of it (e.g. with a “send another file” or “send your own files” link).
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- `ec` - `recipient`, `sender`, or `other`, as applicable.
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- `ea` - `restarted`
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- `cd2`
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#### `unsupported`
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Fired whenever a user is presented a message saying that their browser is unsupported due to missing crypto APIs.
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- `ec` - `sender`
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- `ea` - `unsupported`
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- `cd7`
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