v1.2.0

Added

• Added sf.firehose.v2.Fetch/Block endpoint on firehose, allows fetching single block by num, num+ID or cursor.
• Added tools firehose-single-block-client to call that new endpoint.

Changed

• Renamed tools normalize-merged-blocks to upgrade-merged-blocks.

Fixed

• Fixed common-blocks-cache-dir flag's description.
• Fixed DELEGATECALL's caller (a.k.a from). -> requires upgrade of blocks to version: 3

Upgrade Procedure

Assuming that you are running a firehose deployment v1.1.0 writing blocks to folders /v2-oneblock, /v2-forked and /v2,
you will deploy a new setup that writes blocks to folders /v3-oneblock, v3-forked and /v3

This procedure describes an upgrade without any downtime. With proper parallelization, it should be possible to complete this upgrade within a single day.

1. Launch a new reader with this code, running instrumented geth binary: https://github.com/streamingfast/go-ethereum/releases/tag/geth-v1.10.25-fh2.1
   (you can start from a backup that is close to head)
2. Upgrade your merged-blocks from version: 2 to version: 3 using fireeth tools upgrade-merged-blocks /path/to/v2 /path/to/v3 {start} {stop}
   (you can run multiple upgrade commands in parallel to cover the whole blocks range)
3. Create combined indexes from those new blocks with fireeth start combined-index-builder
   (you can run multiple commands in parallel to fill the block range)
4. When your merged-blocks have been upgraded and the one-block-files are being produced by the new reader, launch a merger
5. When the reader, merger and combined-index-builder caught up to live, you can launch the relayer(s), firehose(s)
6. When the firehoses are ready, you can now switch traffic to them.