### Summary
Tracking issue: https://github.com/wormhole-foundation/wormhole-explorer/issues/276
This pull request implements the endpoint `GET /api/v1/top-assets-by-volume`, which returns the assets that have the highest volume. Internally, the endpoint uses data summarized daily to speed up query execution times.
This endpoint has a mandatory query parameter named `timerange`, which must be set to `7d`, `15d` or `30d`.
### Summary
In order to compute volume metrics for each token, we need metadata about the token that is not present in the VAAs (e.g.: decimals, symbol).
That information is statically defined in `common/domain/tokenbridge.go`. This pull request adds the most relevant tokens (i.e.: the tokens that contribute the most volume) to the existing definitions. It is very likely that more token definitions will be added in the future as needed.
The token metadata that was previously defined in the `notional` package (symbols, coingecko IDs) was also moved to `common/domain/tokenbridge.go`.
Tracking issue https://github.com/wormhole-foundation/wormhole-explorer/issues/281
### Summary
This pull request adds volume metrics to influxdb. Also, it adds the 24h volume metric to `GET /api/v1/scorecards`.
Tracking issues: https://github.com/wormhole-foundation/wormhole-explorer/issues/221, https://github.com/wormhole-foundation/wormhole-explorer/issues/280
### Changes:
* The `parser` service no longer generates metrics for influxdb. All metrics-related code was removed from that service, that code was moved to the analytics service instead.
* New volume metrics were added to the analytics service.
* The notional cache was modified to use token names (i.e.: ticker symbols) as keys instead of chain IDs.
* The notional cache reader was moved to the `common/client/cache` package.
* A little bit of duplicated code between the cache reader and writer was removed.
* A 24h volume metric was added to `GET /api/v1/scorecards`.
* A dictionary that stores token metadata was added under `common/domain/tokenbridge.go`. More tokens will be added to it in the near future.
### Summary
Tracking issue: https://github.com/wormhole-foundation/wormhole-explorer/issues/254
For all chains except Solana, the data in `globalTransactions.sourceTx` was somewhat duplicated, since we already had that data in the `vaas` collection.
This pull request changes the `tx-tracker` service so that no redundant data will be written, and also changes the API to look up the data from the `vaas` collection instead.
The responses from the endpoint `/api/v1/global-tx` will no longer contain the field `originTx.from`.
### Summary
This pull request adds a new component under the directory `txtracker`.
This component retrieves information about portal token bridge transfers (i.e.: sender address, receiver address, timestamp), and persists the data in MongoDB.
### Chains supported
The blockhains currently supported are:
* Terra (27% of outgoing transfers)
* Solana (25%)
* BSC (25%)
* Eth (14%)
* Polygon (4%)
The remaining chains will be added iteratively as needed.
Agustin Pazos
agodnic
ftocal