mirror of
https://github.com/fluencelabs/rust-libp2p
synced 2025-04-25 11:02:12 +00:00
f8ccb0af36
* Move lib.rs to protocol.rs * Rewrite floodsub for ProtocolsHandler * Add a FloodsubBehaviour * Fix closing floodsub after a message * Address concern * Make it conform to the protocol * Make it really conformant * Address concerns
116 lines
3.1 KiB
Rust
116 lines
3.1 KiB
Rust
// Copyright 2018 Parity Technologies (UK) Ltd.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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use bs58;
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use protobuf::Message;
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use rpc_proto;
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/// Represents the hash of a topic.
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///
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/// Instead of a using the topic as a whole, the API of floodsub uses a hash of the topic. You only
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/// have to build the hash once, then use it everywhere.
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#[derive(Debug, Clone, PartialEq, Eq, Hash)]
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pub struct TopicHash {
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hash: String,
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}
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impl TopicHash {
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/// Builds a new `TopicHash` from the given hash.
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#[inline]
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pub fn from_raw(hash: String) -> TopicHash {
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TopicHash { hash: hash }
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}
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#[inline]
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pub fn into_string(self) -> String {
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self.hash
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}
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}
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/// Built topic.
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#[derive(Debug, Clone)]
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pub struct Topic {
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descriptor: rpc_proto::TopicDescriptor,
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hash: TopicHash,
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}
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impl Topic {
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/// Returns the hash of the topic.
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#[inline]
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pub fn hash(&self) -> &TopicHash {
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&self.hash
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}
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}
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impl AsRef<TopicHash> for Topic {
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#[inline]
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fn as_ref(&self) -> &TopicHash {
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&self.hash
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}
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}
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impl From<Topic> for TopicHash {
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#[inline]
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fn from(topic: Topic) -> TopicHash {
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topic.hash
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}
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}
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impl<'a> From<&'a Topic> for TopicHash {
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#[inline]
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fn from(topic: &'a Topic) -> TopicHash {
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topic.hash.clone()
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}
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}
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/// Builder for a `TopicHash`.
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#[derive(Debug, Clone)]
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pub struct TopicBuilder {
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builder: rpc_proto::TopicDescriptor,
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}
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impl TopicBuilder {
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pub fn new<S>(name: S) -> TopicBuilder
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where
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S: Into<String>,
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{
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let mut builder = rpc_proto::TopicDescriptor::new();
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builder.set_name(name.into());
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TopicBuilder { builder: builder }
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}
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/// Turns the builder into an actual `Topic`.
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pub fn build(self) -> Topic {
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let bytes = self
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.builder
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.write_to_bytes()
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.expect("protobuf message is always valid");
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// TODO: https://github.com/libp2p/rust-libp2p/issues/473
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let hash = TopicHash {
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hash: bs58::encode(&bytes).into_string(),
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};
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Topic {
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descriptor: self.builder,
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hash,
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}
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}
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}
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