feat: introduce libp2p-identity crate

This patch combines the `libp2p_core::identity` and `libp2p_core::peer_id` modules into a new crate: `libp2p-identity`.

Resolves libp2p#3349.

Pull-Request: libp2p#3350.

Cargo.toml

@@ -18,6 +18,7 @@ instant = "0.1"
 libp2p-core = { version = "0.39.0", path = "../../core" }
 libp2p-swarm = { version = "0.42.0", path = "../../swarm" }
 libp2p-request-response = { version = "0.24.0", path = "../request-response" }
+libp2p-identity = { version = "0.1.0", path = "../../identity" }
 log = "0.4"
 rand = "0.8"
 quick-protobuf = "0.8"

examples/autonat_client.rs

@@ -33,8 +33,10 @@ use clap::Parser;
 use futures::prelude::*;
 use libp2p_autonat as autonat;
 use libp2p_core::multiaddr::Protocol;
-use libp2p_core::{identity, upgrade::Version, Multiaddr, PeerId, Transport};
+use libp2p_core::{upgrade::Version, Multiaddr, Transport};
 use libp2p_identify as identify;
+use libp2p_identity as identity;
+use libp2p_identity::PeerId;
 use libp2p_noise as noise;
 use libp2p_swarm::{NetworkBehaviour, Swarm, SwarmEvent};
 use libp2p_tcp as tcp;

examples/autonat_server.rs

@@ -29,8 +29,10 @@
 use clap::Parser;
 use futures::prelude::*;
 use libp2p_autonat as autonat;
-use libp2p_core::{identity, multiaddr::Protocol, upgrade::Version, Multiaddr, PeerId, Transport};
+use libp2p_core::{multiaddr::Protocol, upgrade::Version, Multiaddr, Transport};
 use libp2p_identify as identify;
+use libp2p_identity as identity;
+use libp2p_identity::PeerId;
 use libp2p_noise as noise;
 use libp2p_swarm::{NetworkBehaviour, Swarm, SwarmEvent};
 use libp2p_tcp as tcp;

src/behaviour.rs

@@ -28,7 +28,8 @@ use as_server::AsServer;
 pub use as_server::{InboundProbeError, InboundProbeEvent};
 use futures_timer::Delay;
 use instant::Instant;
-use libp2p_core::{multiaddr::Protocol, ConnectedPoint, Endpoint, Multiaddr, PeerId};
+use libp2p_core::{multiaddr::Protocol, ConnectedPoint, Endpoint, Multiaddr};
+use libp2p_identity::PeerId;
 use libp2p_request_response::{
     self as request_response, ProtocolSupport, RequestId, ResponseChannel,
 };

src/behaviour/as_client.rs

@@ -27,7 +27,8 @@ use super::{
 use futures::FutureExt;
 use futures_timer::Delay;
 use instant::Instant;
-use libp2p_core::{Multiaddr, PeerId};
+use libp2p_core::Multiaddr;
+use libp2p_identity::PeerId;
 use libp2p_request_response::{self as request_response, OutboundFailure, RequestId};
 use libp2p_swarm::{
     AddressScore, ConnectionId, ExternalAddresses, ListenAddresses, NetworkBehaviourAction,

src/behaviour/as_server.rs

@@ -23,7 +23,8 @@ use super::{
     ResponseError,
 };
 use instant::Instant;
-use libp2p_core::{multiaddr::Protocol, Multiaddr, PeerId};
+use libp2p_core::{multiaddr::Protocol, Multiaddr};
+use libp2p_identity::PeerId;
 use libp2p_request_response::{
     self as request_response, InboundFailure, RequestId, ResponseChannel,
 };

src/protocol.rs

@@ -21,7 +21,8 @@
 use crate::proto;
 use async_trait::async_trait;
 use futures::io::{AsyncRead, AsyncWrite, AsyncWriteExt};
-use libp2p_core::{upgrade, Multiaddr, PeerId};
+use libp2p_core::{upgrade, Multiaddr};
+use libp2p_identity::PeerId;
 use libp2p_request_response::{self as request_response, ProtocolName};
 use quick_protobuf::{BytesReader, Writer};
 use std::{convert::TryFrom, io};

tests/test_client.rs

@@ -22,7 +22,8 @@ use async_std::task::JoinHandle;
 use libp2p_autonat::{
     Behaviour, Config, Event, NatStatus, OutboundProbeError, OutboundProbeEvent, ResponseError,
 };
-use libp2p_core::{Multiaddr, PeerId};
+use libp2p_core::Multiaddr;
+use libp2p_identity::PeerId;
 use libp2p_swarm::{AddressScore, Swarm, SwarmEvent};
 use libp2p_swarm_test::SwarmExt as _;
 use std::time::Duration;

tests/test_server.rs

@@ -21,7 +21,8 @@
 use libp2p_autonat::{
     Behaviour, Config, Event, InboundProbeError, InboundProbeEvent, ResponseError,
 };
-use libp2p_core::{multiaddr::Protocol, ConnectedPoint, Endpoint, Multiaddr, PeerId};
+use libp2p_core::{multiaddr::Protocol, ConnectedPoint, Endpoint, Multiaddr};
+use libp2p_identity::PeerId;
 use libp2p_swarm::DialError;
 use libp2p_swarm::{AddressScore, Swarm, SwarmEvent};
 use libp2p_swarm_test::SwarmExt as _;