feat: subcommand 'spec'

Sponsored-by: author

4 files changed, 33 insertions, 1 deletions

diff --git a/src/bin/vmadm.rs b/src/bin/vmadm.rs
index 897b145..7a4493e 100644
--- a/src/bin/vmadm.rs
+++ b/src/bin/vmadm.rs
@@ -32,6 +32,14 @@ enum Command {
         common: CommonOptions,
     },
 
+    Spec {
+        #[structopt(flatten)]
+        common: CommonOptions,
+
+        #[structopt(parse(from_os_str))]
+        spec: PathBuf,
+    },
+
     List {
         #[structopt(flatten)]
         common: CommonOptions,
@@ -95,6 +103,11 @@ fn main() -> anyhow::Result<()> {
             cmd::config(&config)?;
         }
 
+        Command::Spec { common, spec } => {
+            let specs = get_specs(&common, &spec)?;
+            cmd::spec(&specs)?;
+        }
+
         Command::List { common } => {
             let config = config(&common)?;
             cmd::list(&config)?;
diff --git a/src/cmd/mod.rs b/src/cmd/mod.rs
index 490cdc4..85ccf4e 100644
--- a/src/cmd/mod.rs
+++ b/src/cmd/mod.rs
@@ -23,3 +23,6 @@ pub use cloud_init::cloud_init;
 
 pub mod config;
 pub use config::config;
+
+pub mod spec;
+pub use spec::spec;
diff --git a/src/cmd/spec.rs b/src/cmd/spec.rs
new file mode 100644
index 0000000..b41f234
--- /dev/null
+++ b/src/cmd/spec.rs
@@ -0,0 +1,16 @@
+//! The `spec` sub-command.
+
+use std::io::Write;
+
+use crate::spec::Specification;
+
+/// The `spec` sub-command.
+///
+/// Write the actual VM specifications to stdout.
+pub fn spec(specs: &[Specification]) -> Result<(), std::io::Error> {
+    for spec in specs {
+        let spec = serde_yaml::to_vec(&spec).unwrap();
+        std::io::stdout().write_all(&spec)?;
+    }
+    Ok(())
+}
diff --git a/src/spec.rs b/src/spec.rs
index a00a5e8..e98377c 100644
--- a/src/spec.rs
+++ b/src/spec.rs
@@ -133,7 +133,7 @@ where
 ///
 /// This is the specification as read from the input file, with the
 /// defaults from the configuration file already applied.
-#[derive(Debug)]
+#[derive(Debug, Serialize)]
 pub struct Specification {
     /// Name of new virtual machine to create.
     pub name: String,