feat: create git tag for release

4 files changed, 67 insertions, 2 deletions

diff --git a/src/bin/bumper.rs b/src/bin/bumper.rs
index 081ca86..1a2e567 100644
--- a/src/bin/bumper.rs
+++ b/src/bin/bumper.rs
@@ -1,3 +1,27 @@
+use bumper::errors::BumperError;
+use bumper::git;
+use log::{error, info};
+use std::process::exit;
+use structopt::StructOpt;
+
 fn main() {
-    std::process::exit(1);
+    if let Err(err) = bumper() {
+        error!("{}", err);
+        exit(1);
+    }
+}
+
+fn bumper() -> Result<(), BumperError> {
+    pretty_env_logger::init_custom_env("BUMPER_LOG");
+    info!("Bumper starts");
+    let opt = Opt::from_args();
+    git::tag(&opt.version)?;
+    info!("Bumper ends OK");
+    Ok(())
+}
+
+#[derive(Debug, StructOpt)]
+struct Opt {
+    #[structopt(help = "version number of new release")]
+    version: String,
 }
diff --git a/src/errors.rs b/src/errors.rs
new file mode 100644
index 0000000..607eecb
--- /dev/null
+++ b/src/errors.rs
@@ -0,0 +1,15 @@
+#[derive(Debug, thiserror::Error)]
+pub enum BumperError {
+    #[error("Failed to run git: {0}")]
+    GitInvoke(#[source] std::io::Error),
+
+    #[error("Command 'git tag' failed: {0}")]
+    GitTag(String),
+}
+
+impl BumperError {
+    pub fn git_tag(stderr: &[u8]) -> Self {
+        let stderr = String::from_utf8_lossy(stderr).into_owned();
+        Self::GitTag(stderr)
+    }
+}
diff --git a/src/git.rs b/src/git.rs
new file mode 100644
index 0000000..76f6da1
--- /dev/null
+++ b/src/git.rs
@@ -0,0 +1,25 @@
+use crate::errors::BumperError;
+use log::{debug, info};
+use std::process::Command;
+
+pub fn tag(version: &str) -> Result<(), BumperError> {
+    let tag_name = format!("v{}", version);
+    info!("Create git tag {}", tag_name);
+    let output = Command::new("git")
+        .arg("tag")
+        .arg("-am")
+        .arg(format!("release version {}", version))
+        .arg(format!("v{}", version))
+        .output();
+    let output = match output {
+        Ok(output) => output,
+        Err(err) => {
+            return Err(BumperError::GitInvoke(err));
+        }
+    };
+    debug!("git exit code was {:?}", output.status.code());
+    if !output.status.success() {
+        return Err(BumperError::git_tag(&output.stderr));
+    }
+    Ok(())
+}
diff --git a/src/lib.rs b/src/lib.rs
index 8b13789..7d4548a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1 +1,2 @@
-
+pub mod errors;
+pub mod git;