dbin

dfuse dbin Library

dbin is a simple file storage format to pack a stream of protobuf messages. It is part of dfuse.

Usage

See example usage in merger

File format

First four magic bytes:

• 'd', 'b', 'i', 'n'

Next single byte:

• file format version, current is 0x00

Next three bytes:

• content type, like 'ETH', 'EOS', or whatever..

Next two bytes:

• 10-based string representation of content version: '00' for version 0, '99', for version 99

Rest of the file:

• Length-prefixed messages, with each length specified as 4 bytes big-endian uint32.
• Followed by message of that length, then start over.
• EOF reached when no more bytes exist after the last message boundary.

Contributing

Issues and PR in this repo related strictly to the dbin library.

Report any protocol-specific issues in their respective repositories

Please first refer to the general dfuse contribution guide, if you wish to contribute to this code base.

License

Apache 2.0