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AccountsDb plugin framework (#20047)

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Summary of Changes

Create a plugin mechanism in the accounts update path so that accounts data can be streamed out to external data stores (be it Kafka or Postgres). The plugin mechanism allows

Data stores of connection strings/credentials to be configured,
Accounts with patterns to be streamed
PostgreSQL implementation of the streaming for different destination stores to be plugged in.

The code comprises 4 major parts:

accountsdb-plugin-intf: defines the plugin interface which concrete plugin should implement.
accountsdb-plugin-manager: manages the load/unload of plugins and provide interfaces which the validator can notify of accounts update to plugins.
accountsdb-plugin-postgres: the concrete plugin implementation for PostgreSQL
The validator integrations: updated streamed right after snapshot restore and after account update from transaction processing or other real updates.
The plugin is optionally loaded on demand by new validator CLI argument -- there is no impact if the plugin is not loaded.
This commit is contained in:
Lijun Wang
2021-09-30 14:26:17 -07:00
committed by GitHub
parent 9ef1f06b3f
commit fe97cb2ddf
41 changed files with 1512 additions and 35 deletions
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docs/src/developing/backwards-compatibility.md
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@ -76,6 +76,7 @@ Major releases:
- [`solana-program`](https://docs.rs/solana-program/) - Rust SDK for writing programs
- [`solana-client`](https://docs.rs/solana-client/) - Rust client for connecting to RPC API
- [`solana-cli-config`](https://docs.rs/solana-cli-config/) - Rust client for managing Solana CLI config files
- [`solana-accountsdb-plugin-interface`](https://docs.rs/solana-accountsdb-plugin-interface/) - Rust interface for developing Solana AccountsDb plugins.
Patch releases: