94a5fdfb5f
* Updated event sequencing and added query keyword * code cosmetics * Documentation update * Added per event indexing and querying to txindexer * rpc test fix * Added support for older versions where event sequencing is not supported * Added support for old versions to tx indexer * Added RPC match flag, fixed bugs in tx indexer, added tests * Removed reference to match.events from the docs * Openapi update * Added height deduplication Co-authored-by: Thane Thomson <connect@thanethomson.com> Co-authored-by: Anca Zamfir <zamfiranca@gmail.com> Co-authored-by: Sergio Mena <sergio@informal.systems> Co-authored-by: Romain Ruetschi <romain.ruetschi@gmail.com> Co-authored-by: Thane Thomson <connect@thanethomson.com>
KVStore
There are two app's here: the KVStoreApplication and the PersistentKVStoreApplication.
KVStoreApplication
The KVStoreApplication is a simple merkle key-value store.
Transactions of the form key=value are stored as key-value pairs in the tree.
Transactions without an = sign set the value to the key.
The app has no replay protection (other than what the mempool provides).
PersistentKVStoreApplication
The PersistentKVStoreApplication wraps the KVStoreApplication and provides two additional features:
- persistence of state across app restarts (using Tendermint's ABCI-Handshake mechanism)
- validator set changes
The state is persisted in leveldb along with the last block committed, and the Handshake allows any necessary blocks to be replayed. Validator set changes are effected using the following transaction format:
"val:pubkey1!power1,pubkey2!power2,pubkey3!power3"
where pubkeyN is a base64-encoded 32-byte ed25519 key and powerN is a new voting power for the validator with pubkeyN (possibly a new one).
To remove a validator from the validator set, set power to 0.
There is no sybil protection against new validators joining.