Rebase ABCI Domain Types onto v0.34.20 branch.

There are two issues to fix:

* The original ABCI domain types work used `chrono`; this temporarily re-adds
  `chrono` as a dependency, so that the changes that eliminated it can be
  replayed on top of this rebasing.

* The original ABCI domain types work was, for some reason, mixed in with
  changes to the RPC test harness for 0.35 compatibility, and that may break
  this code. I didn't attempt to fix this, because I didn't touch the RPC tests
  when writing the ABCI domain types.

Original concatenation of commit messages follows:

Add domain types (updated) and fix integration tests for Tendermint v0.35.0 (cometbft#1022)

* tendermint: add From<Infallible> for Error

* Use hex for AppHash Debug formatting

* Regenerate protobuf types using tools/proto-compiler.

* Regenerate protos against tendermint v0.35.0-rc3.

* Remove SetOption-related code in tendermint-abci.

* Update imports to reflect protobuf movements.

The BlockParams and ConsensusParams structs moved out of the ABCI
protos.

* Update tendermint-abci to reflect upstream proto changes.

* p2p: treat all non-Ed25519 keys as unsupported

This fixes a compile error introduced by upstream proto changes that add
an Sr25519 variant.

* Improve ABCI response code modeling with NonZeroU32

The previous data modeling allowed a user to construct an `Err(0)` value that
would be serialized and deserialized as `Ok`.

* Use the Bytes type in ABCI protos.

* Add conversions between protobuf and chrono types.

* tendermint: define Serde for Block in terms of RawBlock

This changes the Serialize/Deserialize implementations for Block to convert
to/from the proto-generated `RawBlock`, and use the derived serialization for
that type.

This is much cleaner and more maintainable than keeping Serde annotations for
each sub-member of the data structure, because all of the serialization code is
kept in one place, and there's only one validation path (the TryFrom conversion
from RawBlock to Block) that applies to both kinds of serialization.

* tendermint: simpler transaction modeling in Block

This changes the Block type to hold the transactions as a plain
`Vec<Vec<u8>>`, rather than as a custom `abci::transaction::Data` type
(which is itself a wrapper for an `Option<Vec<Transaction>>`, the
`Transaction` type being a wrapper for a `Vec<u8>`).

This also updates the `Block` getter functions; it's not clear (to me)
why they're there, since they access the public fields and aren't used
anywhere else.

* rpc: take over tendermint::abci

The existing contents of the `tendermint::abci` module note that they're
only for the purpose of implementing the RPC endpoints, not a general
ABCI implementation.

Moving that code from the `tendermint` crate to the `tendermint-rpc`
crate decouples the RPC interface from improvements to the ABCI domain
modeling. Eventually, it would be good to eliminate this code and align
it with the new ABCI domain types.

* tendermint: add ABCI domain types.

These types mirror the generated types in tendermint_proto, but have better
naming.

The documentation for each request type is adapted from the ABCI Methods and
Types spec document. However, the same logical request may appear three
times, as a struct with the request data, as a Request variant, and as a
CategoryRequest variant.

To avoid duplication, this PR uses the `#[doc = include_str!(...)]`
functionality stabilized in Rust 1.54 to keep common definitions of the
documentation.

* tendermint: eliminate &'static str errors in ABCI domain types.

* Merge `abci::params::ConsensusParams` with `consensus::Params`.

The code in the `abci` module had more complete documentation from the ABCI
docs, so I copied it onto the existing structure.

* Add hex encoding Serde attribute to Sr25519 keys.

* Replace integers with `block::Height`, `vote::Power`

* Replace integer with block::Round

* Fix tools build by using correct imports

Signed-off-by: Thane Thomson <[email protected]>

* Fix clippy complaints in tools

Signed-off-by: Thane Thomson <[email protected]>

* Fix clippy warning

Signed-off-by: Thane Thomson <[email protected]>

* Fix clippy lints

Signed-off-by: Thane Thomson <[email protected]>

* Fix more clippy lints

Signed-off-by: Thane Thomson <[email protected]>

* Fix deprecation notices from ed25519 crate

Signed-off-by: Thane Thomson <[email protected]>

* Regenerate protos for Tendermint v0.35.0

Signed-off-by: Thane Thomson <[email protected]>

* Fix raw bytes conversion in tests/docs

Signed-off-by: Thane Thomson <[email protected]>

* Add Tendermint v0.35.0 Docker config

Signed-off-by: Thane Thomson <[email protected]>

* Add Tendermint v0.35.0 Docker image for ABCI integration testing

Signed-off-by: Thane Thomson <[email protected]>

* Remove RPC deserialization tests

The support files for these tests were manually generated some time ago.
We should rather favour testing with the `kvstore_fixtures` tests, whose
fixtures are automatically generated by our rpc-probe tool.

Signed-off-by: Thane Thomson <[email protected]>

* Reformat Docker folder readme

Signed-off-by: Thane Thomson <[email protected]>

* Bump version of Tendermint used in ABCI integration test

Signed-off-by: Thane Thomson <[email protected]>

* Bump version of Tendermint used in rpc probe

Signed-off-by: Thane Thomson <[email protected]>

* Bump version of Tendermint used in kvstore integration test

Signed-off-by: Thane Thomson <[email protected]>

* Bump version of Tendermint used in proto-compiler

Signed-off-by: Thane Thomson <[email protected]>

* Regenerate kvstore fixtures with rpc-probe for Tendermint v0.35.0

Signed-off-by: Thane Thomson <[email protected]>

* Update kvstore integration test to accommodate newly generated fixtures

Signed-off-by: Thane Thomson <[email protected]>

* Update RPC tests and data structures to accommodate Tendermint v0.35.0 changes

Signed-off-by: Thane Thomson <[email protected]>

* Update ABCI encoding scheme to accommodate breaking change in tendermint/tendermint#5783

Signed-off-by: Thane Thomson <[email protected]>

* Bump Tendermint version in GitHub Actions kvstore integration test

Signed-off-by: Thane Thomson <[email protected]>

* Add changelog entries to capture breaking changes

Signed-off-by: Thane Thomson <[email protected]>

* Change tx hash encoding from base64 to hex and update tests

Signed-off-by: Thane Thomson <[email protected]>

* Add changelog entry for /tx endpoint change

Signed-off-by: Thane Thomson <[email protected]>

Co-authored-by: Henry de Valence <[email protected]>
Co-authored-by: Henry de Valence <[email protected]>

Author: thanethomson

.changelog/unreleased/breaking-changes/862-035-tendermint.md

@@ -0,0 +1,2 @@
+- Updated integration testing to test against Tendermint v0.35.0
+  ([#862](https://github.com/informalsystems/tendermint-rs/issues/862))

.changelog/unreleased/breaking-changes/862-abci-domain-types.md

@@ -0,0 +1,2 @@
+- `[tendermint]` Added domain types for ABCI
+  ([#862](https://github.com/informalsystems/tendermint-rs/issues/862))

.changelog/unreleased/breaking-changes/862-abci-wire-protocol.md

@@ -0,0 +1,3 @@
+- `[tendermint-abci]` Changed low-level wire encoding protocol to
+  accommodate <https://github.com/tendermint/tendermint/issues/5783>
+  ([#862](https://github.com/informalsystems/tendermint-rs/issues/862))

.changelog/unreleased/breaking-changes/862-rpc-event-events.md

@@ -0,0 +1,5 @@
+- `[tendermint-rpc]` The `event::Event::events` field is now represented as
+  `Option<Vec<crate::abci::Event>>` as opposed to `Option<HashMap<String,
+  Vec<String>>>` to accommodate breaking change in Tendermint v0.35.0
+  subscription interface ([#862](https://github.com/informalsystems/tendermint-
+  rs/issues/862))

.changelog/unreleased/breaking-changes/862-rpc-tx-hash-hex.md

@@ -0,0 +1,3 @@
+- `[tendermint-rpc]` The `/tx` endpoint now encodes
+  the `hash` parameter as hexadecimal instead of base64
+  ([#862](https://github.com/informalsystems/tendermint-rs/issues/862))

abci/src/application.rs

@@ -12,7 +12,7 @@ use tendermint_proto::abci::{
     ResponseApplySnapshotChunk, ResponseBeginBlock, ResponseCheckTx, ResponseCommit,
     ResponseDeliverTx, ResponseEcho, ResponseEndBlock, ResponseFlush, ResponseInfo,
     ResponseInitChain, ResponseListSnapshots, ResponseLoadSnapshotChunk, ResponseOfferSnapshot,
-    ResponseQuery, ResponseSetOption,
+    ResponseQuery,
 };
 
 /// An ABCI application.
@@ -76,12 +76,6 @@ pub trait Application: Send + Clone + 'static {
         Default::default()
     }
 
-    /// Allows the Tendermint node to request that the application set an
-    /// option to a particular value.
-    fn set_option(&self, _request: RequestSetOption) -> ResponseSetOption {
-        Default::default()
-    }
-
     /// Used during state sync to discover available snapshots on peers.
     fn list_snapshots(&self) -> ResponseListSnapshots {
         Default::default()
@@ -123,7 +117,6 @@ impl<A: Application> RequestDispatcher for A {
                 Value::Echo(req) => response::Value::Echo(self.echo(req)),
                 Value::Flush(_) => response::Value::Flush(self.flush()),
                 Value::Info(req) => response::Value::Info(self.info(req)),
-                Value::SetOption(req) => response::Value::SetOption(self.set_option(req)),
                 Value::InitChain(req) => response::Value::InitChain(self.init_chain(req)),
                 Value::Query(req) => response::Value::Query(self.query(req)),
                 Value::BeginBlock(req) => response::Value::BeginBlock(self.begin_block(req)),

abci/src/application/kvstore.rs

@@ -50,15 +50,15 @@ use crate::{
 /// // Deliver a transaction and then commit the transaction
 /// client
 ///     .deliver_tx(RequestDeliverTx {
-///         tx: "test-key=test-value".as_bytes().to_owned(),
+///         tx: "test-key=test-value".into(),
 ///     })
 ///     .unwrap();
 /// client.commit().unwrap();
 ///
 /// // We should be able to query for the data we just delivered above
 /// let res = client
 ///     .query(RequestQuery {
-///         data: "test-key".as_bytes().to_owned(),
+///         data: "test-key".into(),
 ///         path: "".to_string(),
 ///         height: 0,
 ///         prove: false,
@@ -129,25 +129,25 @@ impl Application for KeyValueStoreApp {
             version: "0.1.0".to_string(),
             app_version: 1,
             last_block_height,
-            last_block_app_hash,
+            last_block_app_hash: last_block_app_hash.into(),
         }
     }
 
     fn query(&self, request: RequestQuery) -> ResponseQuery {
-        let key = match String::from_utf8(request.data.clone()) {
+        let key = match std::str::from_utf8(&request.data) {
             Ok(s) => s,
             Err(e) => panic!("Failed to intepret key as UTF-8: {}", e),
         };
         debug!("Attempting to get key: {}", key);
-        match self.get(key.clone()) {
+        match self.get(key) {
             Ok((height, value_opt)) => match value_opt {
                 Some(value) => ResponseQuery {
                     code: 0,
                     log: "exists".to_string(),
                     info: "".to_string(),
                     index: 0,
                     key: request.data,
-                    value: value.into_bytes(),
+                    value: value.into_bytes().into(),
                     proof_ops: None,
                     height,
                     codespace: "".to_string(),
@@ -158,7 +158,7 @@ impl Application for KeyValueStoreApp {
                     info: "".to_string(),
                     index: 0,
                     key: request.data,
-                    value: vec![],
+                    value: Default::default(),
                     proof_ops: None,
                     height,
                     codespace: "".to_string(),
@@ -171,7 +171,7 @@ impl Application for KeyValueStoreApp {
     fn check_tx(&self, _request: RequestCheckTx) -> ResponseCheckTx {
         ResponseCheckTx {
             code: 0,
-            data: vec![],
+            data: Default::default(),
             log: "".to_string(),
             info: "".to_string(),
             gas_wanted: 1,
@@ -183,17 +183,17 @@ impl Application for KeyValueStoreApp {
     }
 
     fn deliver_tx(&self, request: RequestDeliverTx) -> ResponseDeliverTx {
-        let tx = String::from_utf8(request.tx).unwrap();
+        let tx = std::str::from_utf8(&request.tx).unwrap();
         let tx_parts = tx.split('=').collect::<Vec<&str>>();
         let (key, value) = if tx_parts.len() == 2 {
             (tx_parts[0], tx_parts[1])
         } else {
-            (tx.as_ref(), tx.as_ref())
+            (tx, tx)
         };
         let _ = self.set(key, value).unwrap();
         ResponseDeliverTx {
             code: 0,
-            data: vec![],
+            data: Default::default(),
             log: "".to_string(),
             info: "".to_string(),
             gas_wanted: 0,
@@ -202,18 +202,18 @@ impl Application for KeyValueStoreApp {
                 r#type: "app".to_string(),
                 attributes: vec![
                     EventAttribute {
-                        key: "key".as_bytes().to_owned(),
-                        value: key.as_bytes().to_owned(),
+                        key: "key".to_string(),
+                        value: key.to_string(),
                         index: true,
                     },
                     EventAttribute {
-                        key: "index_key".as_bytes().to_owned(),
-                        value: "index is working".as_bytes().to_owned(),
+                        key: "index_key".to_string(),
+                        value: "index is working".to_string(),
                         index: true,
                     },
                     EventAttribute {
-                        key: "noindex_key".as_bytes().to_owned(),
-                        value: "index is working".as_bytes().to_owned(),
+                        key: "noindex_key".to_string(),
+                        value: "index is working".to_string(),
                         index: false,
                     },
                 ],
@@ -228,7 +228,7 @@ impl Application for KeyValueStoreApp {
         let (height, app_hash) = channel_recv(&result_rx).unwrap();
         info!("Committed height {}", height);
         ResponseCommit {
-            data: app_hash,
+            data: app_hash.into(),
             retain_height: height - 1,
         }
     }
@@ -285,7 +285,7 @@ impl KeyValueStoreDriver {
         // As in the Go-based key/value store, simply encode the number of
         // items as the "app hash"
         let mut app_hash = BytesMut::with_capacity(MAX_VARINT_LENGTH);
-        encode_varint(self.store.len() as u64, &mut app_hash);
+        prost::encoding::encode_varint(self.store.len() as u64, &mut app_hash);
         self.app_hash = app_hash.to_vec();
         self.height += 1;
         channel_send(&result_tx, (self.height, self.app_hash.clone()))

abci/src/client.rs

@@ -113,11 +113,6 @@ impl Client {
         perform!(self, Commit, RequestCommit {})
     }
 
-    /// Request that the application set an option to a particular value.
-    pub fn set_option(&mut self, req: RequestSetOption) -> Result<ResponseSetOption, Error> {
-        perform!(self, SetOption, req)
-    }
-
     /// Used during state sync to discover available snapshots on peers.
     pub fn list_snapshots(&mut self) -> Result<ResponseListSnapshots, Error> {
         perform!(self, ListSnapshots, RequestListSnapshots {})

abci/src/codec.rs

@@ -130,7 +130,7 @@ where
     message.encode(&mut buf).map_err(Error::encode)?;
 
     let buf = buf.freeze();
-    encode_varint(buf.len() as u64, &mut dst);
+    prost::encoding::encode_varint(buf.len() as u64, &mut dst);
     dst.put(buf);
     Ok(())
 }
@@ -142,11 +142,11 @@ where
 {
     let src_len = src.len();
     let mut tmp = src.clone().freeze();
-    let encoded_len = match decode_varint(&mut tmp) {
+    let encoded_len = match prost::encoding::decode_varint(&mut tmp) {
         Ok(len) => len,
         // We've potentially only received a partial length delimiter
         Err(_) if src_len <= MAX_VARINT_LENGTH => return Ok(None),
-        Err(e) => return Err(e),
+        Err(e) => return Err(Error::decode(e)),
     };
     let remaining = tmp.remaining() as u64;
     if remaining < encoded_len {
@@ -164,14 +164,3 @@ where
         Ok(Some(res))
     }
 }
-
-// encode_varint and decode_varint will be removed once
-// https://github.com/tendermint/tendermint/issues/5783 lands in Tendermint.
-pub fn encode_varint<B: BufMut>(val: u64, mut buf: &mut B) {
-    prost::encoding::encode_varint(val << 1, &mut buf);
-}
-
-pub fn decode_varint<B: Buf>(mut buf: &mut B) -> Result<u64, Error> {
-    let len = prost::encoding::decode_varint(&mut buf).map_err(Error::decode)?;
-    Ok(len >> 1)
-}

abci/tests/kvstore_app.rs

@@ -25,19 +25,19 @@ mod kvstore_app_integration {
 
         client
             .deliver_tx(RequestDeliverTx {
-                tx: "test-key=test-value".as_bytes().to_owned(),
+                tx: "test-key=test-value".into(),
             })
             .unwrap();
         client.commit().unwrap();
 
         let res = client
             .query(RequestQuery {
-                data: "test-key".as_bytes().to_owned(),
+                data: "test-key".into(),
                 path: "".to_string(),
                 height: 0,
                 prove: false,
             })
             .unwrap();
-        assert_eq!(res.value, "test-value".as_bytes().to_owned());
+        assert_eq!(res.value, "test-value".as_bytes());
     }
 }