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43 Commits

Author SHA1 Message Date
Andreas Fackler bbc27e8a66 Update terminology: "observers" and "validators" 2018-07-02 14:14:19 +02:00
Andreas Fackler 33eadc94ef Apply code review comments; improve broadcast docs. 2018-06-28 21:46:51 +02:00
Andreas Fackler 824a23775d Move broadcast docs to module-level. 
Also replaces the word "good" with "correct".
 2018-06-28 12:49:11 +02:00
Andreas Fackler aaec3d4074 Simplify observer/peer-specific code. 
Extract some methods to make the branches more readable.
 2018-06-26 14:50:06 +02:00
Andreas Fackler 2db67df325 Rename is_full_node to is_peer. 2018-06-26 10:57:44 +02:00
Andreas Fackler 2a5f9f1bfe Allow observer nodes in all algorithms. 
This allows nodes to join the network without sending any messages
themselves. They can't give any input and just observe the outcome.

Closes #81
 2018-06-26 09:17:12 +02:00
Andreas Fackler 83f8d61402 Support serde by default. 
This removes the `serialization-serde` feature, since serde is already
used internally and therefore a dependency anyway.
 2018-06-20 10:21:52 +02:00
Andreas Fackler 66f396e01c Remove more NodeUid trait bounds. 
Use a `BTreeMap` instead of `HashMap` in `NetworkInfo`. The number of
nodes can't grow very large anyway.
 2018-06-18 16:37:07 +02:00
Andreas Fackler 3f707a8e12 Return proposer info from HoneyBadger. 
Also, consistently name generic arguments, and remove some unused trait
bounds.
 2018-06-18 16:19:54 +02:00
Vladimir Komendantskiy 3393052b4b review comment coverage 2018-06-14 12:28:38 +01:00
Vladimir Komendantskiy 5008d11ada Revert "the set of node indices of common coin shares is now computed only once" 
This reverts commit e9808efc61.
 2018-06-14 10:05:05 +01:00
Vladimir Komendantskiy e9808efc61 the set of node indices of common coin shares is now computed only once 2018-06-13 22:05:11 +01:00
Andreas Fackler 9859002e1b Don't panic on shards of unequal size. 2018-05-31 09:12:15 +02:00
Andreas Fackler bb61d0c5ab Ignore messages in Agreement after termination. 2018-05-30 17:33:24 +02:00
Andreas Fackler c91fa13213 Make Broadcast handle large payloads. 2018-05-30 15:40:15 +02:00
Vladimir Komendantskiy d09f3e26b4 introduced common shared network information 2018-05-29 14:53:01 +01:00
Andreas Fackler 9a0622f3f2 Update Rust, re-enable rustfmt. 2018-05-21 11:26:42 +02:00
Peter van Nostrand 19b982284b Added error-chain error handling. 2018-05-20 07:51:33 -04:00
Andreas Fackler 50d007b954 Remove protoc dep, use new MerkleTree methods. 2018-05-17 16:50:47 +02:00
Andreas Fackler b8c534da2b Rename has_output to decided, add output iterator. 2018-05-15 16:05:55 +02:00
Andreas Fackler 3895949cf6 Fix broadcast for size < 4, and test more network sizes. 2018-05-15 15:53:37 +02:00
Andreas Fackler 10d9aa73e3 Rename UnexpectedMessage error. 2018-05-15 15:48:43 +02:00
Andreas Fackler 5528fc2de8 Define a common DistAlgorithm trait. 
This will allow us to deduplicate network simulations in tests for the
different algorithms. More generally, it facilitates writing general
tools and applying them to all distributed algorithms.
 2018-05-15 15:48:43 +02:00
Andreas Fackler b543b771a7 Rename util to fmt. 2018-05-15 08:31:13 +02:00
Andreas Fackler e2c66e9a0a Add optional serde support. 
If the feature "serialization-serde" is specified, protocol messages
implement serde's `Serialize` and `Deserialize` traits.

Close #18
 2018-05-14 18:32:59 +02:00
Andreas Fackler e8838f1491 Make protobuf support optional. 
Protobuf support is now only built if the feature
"serialization-protobuf" is enabled.

Close #19
 2018-05-14 17:29:04 +02:00
Andreas Fackler 71fa32c18f Remove interior mutability. 
The `RwLock` is not needed anymore, since the broadcast implementation
doesn't handle any threading internally.
 2018-05-14 09:35:34 +02:00
Andreas Fackler 38cdd596a2 Start implementing the top-level Honey Badger algorithm. 
This also contains a few fixes for the `common_subset` module:
* Rename `common_subset::Output` to `Message` to avoid confusing it
  with the value that the algorithm outputs as a result.
* Implement dispatch of messages to the right instance within
  `CommonSubset`, in a way that is transparent to the user.
 2018-05-12 16:09:07 +02:00
Andreas Fackler 36183b1e27 Simplify the message types. 2018-05-10 17:52:12 +02:00
Andreas Fackler b98bbe9dcd Fix broadcast and example, enable more tests. 
This fixes several issues with the broadcast algorithm and enables the
previously ignored tests that now pass:
* Don't decide on a root hash based on anyone's `Echo` message.
* Work around the `merkle` crate's inability to produce the proof of the
  `i`-th leaf for a given index `i`.
* Ignore messages from unknown nodes.
* Avoid decoding multiple times.
* Document the full algorithm.
* Don't count multiple `Echo` or `Ready` messages coming from the same
  node.
* Fix index computation for a given proof.
* Move `BroadcastMessage` into `broadcast` to make the module more
  self-contained.

The example now only executes a single broadcast instance, expecting the
first node (the one with the lexicographically lowest address) to
propose a value. A shell script is added that runs for example nodes.

Use env_logger instead of simple_logger, so the log level can be controlled
with an environment variable. You can e.g. log all output from the broadcast
test and the crate itself in debug mode with:
RUST_LOG=hbbft=debug,broadcast=debug

Some debugging messages are more concise now and use hexadecimal
notation instead of printing arrays of decimal values.

An indentation error in the Travis script is also fixed.
 2018-05-08 17:04:38 +02:00
Andreas Fackler eec3102cbf Move node to examples, deduplicate code. 2018-05-05 17:54:29 +02:00
Andreas Fackler e2cd4ca1b7 added (ignored) regression tests for some of the broadcast issues 2018-05-04 11:14:19 +02:00
Andreas Fackler 8bced81438 removed some unnecessary cloning 
This also adds a few TODOs to the broadcast implementation: Some of
these issues need a regression test. (Oh, and a fix!)
 2018-05-04 09:58:21 +02:00
Andreas Fackler babbd2f36a fixed broadcast failure with malicious value proposal 2018-05-03 11:07:37 +03:00
Andreas Fackler 0f3377c8e9 made broadcast handle its own echo and value messages 2018-05-03 08:47:31 +03:00
Andreas Fackler 7096251b91 extended tests, make broadcast output only once 2018-05-02 16:34:54 +03:00
Andreas Fackler f710806b17 test broadcast in a single thread 2018-05-01 19:38:11 +03:00
Vladimir Komendantskiy bb765cbb06 propose_value function in Broadcast 2018-05-01 15:28:31 +01:00
Andreas Fackler d7882bae9c added Broadcast::handle_broadcast_message 2018-05-01 17:01:29 +03:00
Andreas Fackler 6117e11a9e applied rustfmt 2018-04-30 18:55:51 +03:00
Andreas Fackler f399ed2c07 fixed Clippy lint warnings 2018-04-30 18:50:24 +03:00
Vladimir Komendantskiy 329adc3c2b ported sharding and sending out Merkle tree proofs 2018-04-27 13:19:39 +01:00
Vladimir Komendantskiy eef846550f added the ACS algorithm with one clause not ready yet 2018-04-26 14:22:18 +01:00