v1.0: Advertise node version in gossip (bp #9986) (#9995)

automerge

version/.gitignore

@@ -0,0 +1,2 @@
+/target/
+/farf/

version/Cargo.toml

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+[package]
+name = "solana-version"
+version = "1.1.11"
+description = "Solana Version"
+authors = ["Solana Maintainers <maintainers@solana.com>"]
+repository = "https://github.com/solana-labs/solana"
+license = "Apache-2.0"
+homepage = "https://solana.com/"
+edition = "2018"
+
+[dependencies]
+serde = "1.0.105"
+serde_derive = "1.0.103"
+solana-sdk = { path = "../sdk", version = "1.0.23" }
+
+[lib]
+name = "solana_version"
+
+[package.metadata.docs.rs]
+targets = ["x86_64-unknown-linux-gnu"]

version/src/lib.rs

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+extern crate serde_derive;
+use serde_derive::{Deserialize, Serialize};
+use solana_sdk::sanitize::Sanitize;
+use std::fmt;
+
+#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
+pub struct Version {
+    major: u16,
+    minor: u16,
+    patch: u16,
+    commit: Option<u32>, // first 4 bytes of the sha1 commit hash
+}
+
+fn compute_commit(sha1: Option<&'static str>) -> Option<u32> {
+    let sha1 = sha1?;
+    if sha1.len() < 8 {
+        None
+    } else {
+        u32::from_str_radix(&sha1[..8], 16).ok()
+    }
+}
+
+impl Default for Version {
+    fn default() -> Self {
+        Self {
+            major: env!("CARGO_PKG_VERSION_MAJOR").parse().unwrap(),
+            minor: env!("CARGO_PKG_VERSION_MINOR").parse().unwrap(),
+            patch: env!("CARGO_PKG_VERSION_PATCH").parse().unwrap(),
+            commit: compute_commit(option_env!("CI_COMMIT")),
+        }
+    }
+}
+
+impl fmt::Display for Version {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "{}.{}.{} {}",
+            self.major,
+            self.minor,
+            self.patch,
+            match self.commit {
+                None => "devbuild".to_string(),
+                Some(commit) => format!("{:08x}", commit),
+            }
+        )
+    }
+}
+
+impl Sanitize for Version {}
+
+#[macro_export]
+macro_rules! version {
+    () => {
+        &*format!("{}", $crate::Version::default())
+    };
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_compute_commit() {
+        assert_eq!(compute_commit(None), None);
+        assert_eq!(compute_commit(Some("1234567890")), Some(0x12345678));
+        assert_eq!(compute_commit(Some("HEAD")), None);
+        assert_eq!(compute_commit(Some("garbagein")), None);
+    }
+}