Add snappy compression support (#866)

* notes from call

* should_forward function

* should_forward_block cleanup

* some cleanup and notes

* complete draft

* corrections

* some cleanup

* ran cargo fmt

* Revert "ran cargo fmt"

This reverts commit 464a5c4b62.

* ran cargo fmt after updating

* proposer index mods

* fmt

* new way of reading state

* fmt

* fmt

* compiles again

* fmt

* Correct stream timeout delay queue handling

* Correct small typo

* Support BlocksByRange step parameter

* Add initial docs to syncing

* Initial start of naive-attestation-aggregation

* Remove ping protocol

* Initial renaming of network services

* Correct rebasing relative to latest master

* Adds HashMapDelay struct to utils

* Initial network restructure

* Network restructure. Adds new types for v0.2.0

* Removes build artefacts

* Shift validation to beacon chain

* Temporarily remove gossip validation

This is to be updated to match current optimisation efforts.

* Adds AggregateAndProof

* Begin rebuilding pubsub encoding/decoding

* Temp commit

* Shift gossipsup decoding in eth2_libp2p

* Shifts block encoding/decoding into RPC

* Progress on attestation service

* Initial work on removing libp2p lock

* Add LRU caches to store (rollup)

* Update attestation validation for DB changes (WIP)

* Initial version of should_forward_block

* Scaffold

* Progress on attestation validation

Also, consolidate prod+testing slot clocks so that they share much
of the same implementation and can both handle sub-slot time changes.

* Removes lock from libp2p service

* Completed network lock removal

* Finish(?) attestation processing

* Correct network termination future

* Add slot check to block check

* Correct fmt issues

* Remove Drop implementation for network service

* Address reviewers suggestions

* Modification of validator for subscriptions

* Add slot signing to validator client

* Further progress on validation subscription

* Register SSZ snappy protocol messages

* Add initial idea of snappy compressed Codec by replacing the UVI codec with the snap library

* Fix matching against protocol string

* Adds TODOs for implementation work

* Implements check against max packet size before attempting to decode snappy compressed packages

* Add ssz_snappy codec

* Adds necessary validator subscription functionality

* Progress on snappy codec

* Clean up validator <-> beacon node http types

* Add aggregator status to ValidatorDuty

* clear buffer after decoding

* Impl Clone for manual slot clock

* Fix minor errors

* Further progress validator client subscription

* Initial subscription and aggregation handling

* Progress to modifying val client for attestation aggregation

* First draft of validator client upgrade for aggregate attestations

* Trying something

* Length prefix compressed data

* Fix gossipsub tests

* Working snappy frames with compressed length prefix

* Removes lock on a network channel

* Partially implement beacon node subscription http api

* Uncompressed length prefix working

* Cleanup

* Remove Testing request and response

* Return codec from match statement; reduce code duplication

* Fix unsafe unwrap in Outbound decode

* Add length checks

* All encode/decode functions use snappy frame format

* Add a `full` BeaconBlock method

* Add executable to test rpc against other impls

* Remove unused code; minor fixes

* Add PH & MS slot clock changes

* Account for genesis time

* Use checked mul

* Account for genesis slot

* Change API

* Refactor "duration to..." functions

* Re-merge updated block processing to v0.2.0 (#962)

* Start updating types

* WIP

* Signature hacking

* Existing EF tests passing with fake_crypto

* Updates

* Delete outdated API spec

* The refactor continues

* It compiles

* WIP test fixes

* All release tests passing bar genesis state parsing

* Update and test YamlConfig

* Update to spec v0.10 compatible BLS

* Updates to BLS EF tests

* Add EF test for AggregateVerify

And delete unused hash2curve tests for uncompressed points

* Update EF tests to v0.10.1

* Use optional block root correctly in block proc

* Use genesis fork in deposit domain. All tests pass

* Cargo fmt

* Fast aggregate verify test

* Update REST API docs

* Cargo fmt

* Fix unused import

* Bump spec tags to v0.10.1

* Add `seconds_per_eth1_block` to chainspec

* Update to timestamp based eth1 voting scheme

* Return None from `get_votes_to_consider` if block cache is empty

* Handle overflows in `is_candidate_block`

* Revert to failing tests

* Fix eth1 data sets test

* Choose default vote according to spec

* Fix collect_valid_votes tests

* Fix `get_votes_to_consider` to choose all eligible blocks

* Uncomment winning_vote tests

* Add comments; remove unused code

* Reduce seconds_per_eth1_block for simulation

* Addressed review comments

* Add test for default vote case

* Fix logs

* Remove unused functions

* Meter default eth1 votes

* Fix comments

* Address review comments; remove unused dependency

* Add first attempt at attestation proc. re-write

* Add version 2 of attestation processing

* Minor fixes

* Add validator pubkey cache

* Make get_indexed_attestation take a committee

* Link signature processing into new attn verification

* First working version

* Ensure pubkey cache is updated

* Add more metrics, slight optimizations

* Clone committee cache during attestation processing

* Update shuffling cache during block processing

* Remove old commented-out code

* Fix shuffling cache insert bug

* Used indexed attestation in fork choice

* Restructure attn processing, add metrics

* Add more detailed metrics

* Tidy, fix failing tests

* Fix failing tests, tidy

* Disable/delete two outdated tests

* Add new Pubkeys struct to signature_sets

* Refactor with functional approach

* Update beacon chain

* Remove decompressed member from pubkey bytes

* Add hashmap for indices lookup

* Add state cache, remove store cache

* Only build the head committee cache

* Change `get_attesting_indices` to use Vec

* Fix failing test

* Tidy

* Add pubkey cache persistence file

* Add more comments

* Integrate persistence file into builder

* Add pubkey cache tests

* Add data_dir to beacon chain builder

* Remove Option in pubkey cache persistence file

* Ensure consistency between datadir/data_dir

* Fix failing network test

* Tidy

* Fix todos

* Improve tests

* Fix compile error

* Fix compile error from merge

* Split up block processing metrics

* Tidy

* Refactor get_pubkey_from_state

* Remove commented-out code

* Rename state_cache -> checkpoint_cache

* Rename Checkpoint -> Snapshot

* Tidy, add comments

* Tidy up find_head function

* Change some checkpoint -> snapshot

* Add tests

* Expose max_len

* Remove dead code

* Tidy

* Fix bug

* Add sync-speed metric

* Add first attempt at VerifiableBlock

* Start integrating into beacon chain

* Integrate VerifiableBlock

* Rename VerifableBlock -> PartialBlockVerification

* Add start of typed methods

* Add progress

* Add further progress

* Rename structs

* Add full block verification to block_processing.rs

* Further beacon chain integration

* Update checks for gossip

* Add todo

* Start adding segement verification

* Add passing chain segement test

* Initial integration with batch sync

* Minor changes

* Tidy, add more error checking

* Start adding chain_segment tests

* Finish invalid signature tests

* Include single and gossip verified blocks in tests

* Add gossip verification tests

* Start adding docs

* Finish adding comments to block_processing.rs

* Rename block_processing.rs -> block_verification

* Start removing old block processing code

* Fixes beacon_chain compilation

* Fix project-wide compile errors

* Remove old code

* Fix bug with beacon proposer index

* Fix shim for BlockProcessingError

* Only process one epoch at a time

* Fix loop in chain segment processing

* Add caching for state.eth1_data_votes

* Add BeaconChain::validator_pubkey

* Revert "Add caching for state.eth1_data_votes"

This reverts commit cd73dcd643.

* Add sync-speed metric (#898)

* Add PH & MS slot clock changes

* Account for genesis time

* Use checked mul

* Account for genesis slot

* Change API

* Allow for clock disparity

* Refactor "duration to..." functions

* Ensure errors are returned during batch processing

Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: Michael Sproul <micsproul@gmail.com>
Co-authored-by: pawan <pawandhananjay@gmail.com>
Co-authored-by: Paul Hauner <paul@paulhauner.com>

* Enr fork (#967)

* Start fixing enr-fork-id

* Fix time-until-next-fork logic

* Remove fork crate

* Update any references to beacon_chain.spec.milliseconds_per_slot to beacon_chain.slot_clock.slot_diration().as_nillis() in the attestation service. (#968)

* Process network attestations (#966)

* Start updating types

* WIP

* Signature hacking

* Existing EF tests passing with fake_crypto

* Updates

* Delete outdated API spec

* The refactor continues

* It compiles

* WIP test fixes

* All release tests passing bar genesis state parsing

* Update and test YamlConfig

* Update to spec v0.10 compatible BLS

* Updates to BLS EF tests

* Add EF test for AggregateVerify

And delete unused hash2curve tests for uncompressed points

* Update EF tests to v0.10.1

* Use optional block root correctly in block proc

* Use genesis fork in deposit domain. All tests pass

* Cargo fmt

* Fast aggregate verify test

* Update REST API docs

* Cargo fmt

* Fix unused import

* Bump spec tags to v0.10.1

* Add `seconds_per_eth1_block` to chainspec

* Update to timestamp based eth1 voting scheme

* Return None from `get_votes_to_consider` if block cache is empty

* Handle overflows in `is_candidate_block`

* Revert to failing tests

* Fix eth1 data sets test

* Choose default vote according to spec

* Fix collect_valid_votes tests

* Fix `get_votes_to_consider` to choose all eligible blocks

* Uncomment winning_vote tests

* Add comments; remove unused code

* Reduce seconds_per_eth1_block for simulation

* Addressed review comments

* Add test for default vote case

* Fix logs

* Remove unused functions

* Meter default eth1 votes

* Fix comments

* Address review comments; remove unused dependency

* Add first attempt at attestation proc. re-write

* Add version 2 of attestation processing

* Minor fixes

* Add validator pubkey cache

* Make get_indexed_attestation take a committee

* Link signature processing into new attn verification

* First working version

* Ensure pubkey cache is updated

* Add more metrics, slight optimizations

* Clone committee cache during attestation processing

* Update shuffling cache during block processing

* Remove old commented-out code

* Fix shuffling cache insert bug

* Used indexed attestation in fork choice

* Restructure attn processing, add metrics

* Add more detailed metrics

* Tidy, fix failing tests

* Fix failing tests, tidy

* Disable/delete two outdated tests

* Add new Pubkeys struct to signature_sets

* Refactor with functional approach

* Update beacon chain

* Remove decompressed member from pubkey bytes

* Add hashmap for indices lookup

* Add state cache, remove store cache

* Only build the head committee cache

* Change `get_attesting_indices` to use Vec

* Fix failing test

* Tidy

* Add pubkey cache persistence file

* Add more comments

* Integrate persistence file into builder

* Add pubkey cache tests

* Add data_dir to beacon chain builder

* Remove Option in pubkey cache persistence file

* Ensure consistency between datadir/data_dir

* Fix failing network test

* Tidy

* Fix todos

* Improve tests

* Fix compile error

* Fix compile error from merge

* Split up block processing metrics

* Tidy

* Refactor get_pubkey_from_state

* Remove commented-out code

* Rename state_cache -> checkpoint_cache

* Rename Checkpoint -> Snapshot

* Tidy, add comments

* Tidy up find_head function

* Change some checkpoint -> snapshot

* Add tests

* Expose max_len

* Remove dead code

* Tidy

* Fix bug

* Add sync-speed metric

* Add first attempt at VerifiableBlock

* Start integrating into beacon chain

* Integrate VerifiableBlock

* Rename VerifableBlock -> PartialBlockVerification

* Add start of typed methods

* Add progress

* Add further progress

* Rename structs

* Add full block verification to block_processing.rs

* Further beacon chain integration

* Update checks for gossip

* Add todo

* Start adding segement verification

* Add passing chain segement test

* Initial integration with batch sync

* Minor changes

* Tidy, add more error checking

* Start adding chain_segment tests

* Finish invalid signature tests

* Include single and gossip verified blocks in tests

* Add gossip verification tests

* Start adding docs

* Finish adding comments to block_processing.rs

* Rename block_processing.rs -> block_verification

* Start removing old block processing code

* Fixes beacon_chain compilation

* Fix project-wide compile errors

* Remove old code

* Fix bug with beacon proposer index

* Fix shim for BlockProcessingError

* Only process one epoch at a time

* Fix loop in chain segment processing

* Add caching for state.eth1_data_votes

* Add BeaconChain::validator_pubkey

* Revert "Add caching for state.eth1_data_votes"

This reverts commit cd73dcd643.

* Allow for clock disparity

* Ensure errors are returned during batch processing

* Add block gossip verification

* Connect attestation processing to beacon chain

* Optimistically subscribe to subnets on the same slot

Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: Michael Sproul <micsproul@gmail.com>
Co-authored-by: pawan <pawandhananjay@gmail.com>
Co-authored-by: Paul Hauner <paul@paulhauner.com>

* Update /validator/subscribe (#969)

* Add progress on duties refactor

* Add simple is_aggregator bool to val subscription

* Remove unused function

* Upgrade sim (#972)

* Add progress on duties refactor

* Add simple is_aggregator bool to val subscription

* Add the no-eth1-sim, refactor sim

* Sends discovery for persistent subnets (#973)

* main takes cmdline arguments

* Add test script

* Fix errors

* snappy uses Uvi to encode/decode length prefix

* Add more comments

* Run fmt

Co-authored-by: Grant Wuerker <gwuerker@gmail.com>
Co-authored-by: Age Manning <Age@AgeManning.com>
Co-authored-by: Michael Sproul <micsproul@gmail.com>
Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: b-m-f <max@ehlers.berlin>
Co-authored-by: Paul Hauner <paul@paulhauner.com>
Co-authored-by: realbigsean <seananderson33@GMAIL.com>

eth2/types/src/attestation_data.rs

@@ -10,7 +10,18 @@ use tree_hash_derive::TreeHash;
 ///
 /// Spec v0.11.1
 #[derive(
-    Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash, Encode, Decode, TreeHash, TestRandom,
+    Debug,
+    Clone,
+    PartialEq,
+    Eq,
+    Serialize,
+    Deserialize,
+    Hash,
+    Encode,
+    Decode,
+    TreeHash,
+    TestRandom,
+    Default,
 )]
 pub struct AttestationData {
     pub slot: Slot,

eth2/types/src/beacon_block.rs

@@ -50,6 +50,100 @@ impl<T: EthSpec> BeaconBlock<T> {
         }
     }
 
+    /// Return a block where the block has the max possible operations.
+    pub fn full(spec: &ChainSpec) -> BeaconBlock<T> {
+        let header = BeaconBlockHeader {
+            slot: Slot::new(1),
+            proposer_index: 0,
+            parent_root: Hash256::zero(),
+            state_root: Hash256::zero(),
+            body_root: Hash256::zero(),
+        };
+
+        let signed_header = SignedBeaconBlockHeader {
+            message: header,
+            signature: Signature::empty_signature(),
+        };
+        let indexed_attestation: IndexedAttestation<T> = IndexedAttestation {
+            attesting_indices: VariableList::new(vec![
+                0 as u64;
+                T::MaxValidatorsPerCommittee::to_usize()
+            ])
+            .unwrap(),
+            data: AttestationData::default(),
+            signature: AggregateSignature::new(),
+        };
+
+        let deposit_data = DepositData {
+            pubkey: PublicKeyBytes::empty(),
+            withdrawal_credentials: Hash256::zero(),
+            amount: 0,
+            signature: SignatureBytes::empty(),
+        };
+        let proposer_slashing = ProposerSlashing {
+            signed_header_1: signed_header.clone(),
+            signed_header_2: signed_header.clone(),
+        };
+
+        let attester_slashing = AttesterSlashing {
+            attestation_1: indexed_attestation.clone(),
+            attestation_2: indexed_attestation.clone(),
+        };
+
+        let attestation: Attestation<T> = Attestation {
+            aggregation_bits: BitList::with_capacity(T::MaxValidatorsPerCommittee::to_usize())
+                .unwrap(),
+            data: AttestationData::default(),
+            signature: AggregateSignature::new(),
+        };
+
+        let deposit = Deposit {
+            proof: FixedVector::from_elem(Hash256::zero()),
+            data: deposit_data,
+        };
+
+        let voluntary_exit = VoluntaryExit {
+            epoch: Epoch::new(1),
+            validator_index: 1,
+        };
+
+        let signed_voluntary_exit = SignedVoluntaryExit {
+            message: voluntary_exit,
+            signature: Signature::empty_signature(),
+        };
+
+        let mut block: BeaconBlock<T> = BeaconBlock::empty(spec);
+        for _ in 0..T::MaxProposerSlashings::to_usize() {
+            block
+                .body
+                .proposer_slashings
+                .push(proposer_slashing.clone())
+                .unwrap();
+        }
+        for _ in 0..T::MaxDeposits::to_usize() {
+            block.body.deposits.push(deposit.clone()).unwrap();
+        }
+        for _ in 0..T::MaxVoluntaryExits::to_usize() {
+            block
+                .body
+                .voluntary_exits
+                .push(signed_voluntary_exit.clone())
+                .unwrap();
+        }
+        for _ in 0..T::MaxAttesterSlashings::to_usize() {
+            block
+                .body
+                .attester_slashings
+                .push(attester_slashing.clone())
+                .unwrap();
+        }
+
+        for _ in 0..T::MaxAttestations::to_usize() {
+            block.body.attestations.push(attestation.clone()).unwrap();
+        }
+        block
+    }
+
     /// Returns the epoch corresponding to `self.slot`.
     pub fn epoch(&self) -> Epoch {
         self.slot.epoch(T::slots_per_epoch())