bft blockchain consensus consistency cryptocurrency cryptography db distributed-systems go

History

Alexander Bezobchuk ab0835463f abci: Refactor tagging events using list of lists (#3643 ) ## PR This PR introduces a fundamental breaking change to the structure of ABCI response and tx tags and the way they're processed. Namely, the SDK can support more complex and aggregated events for distribution and slashing. In addition, block responses can include duplicate keys in events. Implement new Event type. An event has a type and a list of KV pairs (ie. list-of-lists). Typical events may look like: "rewards": [{"amount": "5000uatom", "validator": "...", "recipient": "..."}] "sender": [{"address": "...", "balance": "100uatom"}] The events are indexed by {even.type}.{even.attribute[i].key}/.... In this case a client would subscribe or query for rewards.recipient='...' ABCI response types and related types now include Events []Event instead of Tags []cmn.KVPair. PubSub logic now publishes/matches against map[string][]string instead of map[string]string to support duplicate keys in response events (from #1385). A match is successful if the value is found in the slice of strings. closes: #1859 closes: #2905 ## Commits: * Implement Event ABCI type and updates responses to use events * Update messages_test.go * Update kvstore.go * Update event_bus.go * Update subscription.go * Update pubsub.go * Update kvstore.go * Update query logic to handle slice of strings in events * Update Empty#Matches and unit tests * Update pubsub logic * Update EventBus#Publish * Update kv tx indexer * Update godocs * Update ResultEvent to use slice of strings; update RPC * Update more tests * Update abci.md * Check for key in validateAndStringifyEvents * Fix KV indexer to skip empty keys * Fix linting errors * Update CHANGELOG_PENDING.md * Update docs/spec/abci/abci.md Co-Authored-By: Federico Kunze <31522760+fedekunze@users.noreply.github.com> * Update abci/types/types.proto Co-Authored-By: Ethan Buchman <ethan@coinculture.info> * Update docs/spec/abci/abci.md Co-Authored-By: Ethan Buchman <ethan@coinculture.info> * Update libs/pubsub/query/query.go Co-Authored-By: Ethan Buchman <ethan@coinculture.info> * Update match function to match if ANY value matches * Implement TestSubscribeDuplicateKeys * Update TestMatches to include multi-key test cases * Update events.go * Update Query interface godoc * Update match godoc * Add godoc for matchValue * DRY-up tx indexing * Return error from PublishWithEvents in EventBus#Publish * Update PublishEventNewBlockHeader to return an error * Fix build * Update events doc in ABCI * Update ABCI events godoc * Implement TestEventBusPublishEventTxDuplicateKeys * Update TestSubscribeDuplicateKeys to be table-driven * Remove mod file * Remove markdown from events godoc * Implement TestTxSearchDeprecatedIndexing test		6 years ago
..
README.md	add spec/abci/readme to sidebar (#2551)	6 years ago
abci.md	abci: Refactor tagging events using list of lists (#3643)	6 years ago
apps.md	Update apps.md (#3621)	6 years ago
client-server.md	[docs] improve organization of ABCI docs & fix links (#2749)	6 years ago

README.md

Overview

ABCI is the interface between Tendermint (a state-machine replication engine) and your application (the actual state machine). It consists of a set of methods, where each method has a corresponding Request and Response message type. Tendermint calls the ABCI methods on the ABCI application by sending the Request* messages and receiving the Response* messages in return.

All message types are defined in a protobuf file. This allows Tendermint to run applications written in any programming language.

This specification is split as follows:

Methods and Types - complete details on all ABCI methods and message types
Applications - how to manage ABCI application state and other details about building ABCI applications
Client and Server - for those looking to implement their own ABCI application servers