ch-remote: Add --snapshot option

Introduce the snapshot wrapper to ch-remote.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

src/bin/ch-remote.rs

@@ -249,6 +249,19 @@ fn add_net_api_command(socket: &mut UnixStream, config: &str) -> Result<(), Erro
     )
 }
 
+fn snapshot_api_command(socket: &mut UnixStream, url: &str) -> Result<(), Error> {
+    let snapshot_config = vmm::api::VmSnapshotConfig {
+        destination_url: String::from(url),
+    };
+
+    simple_api_command(
+        socket,
+        "PUT",
+        "snapshot",
+        Some(&serde_json::to_string(&snapshot_config).unwrap()),
+    )
+}
+
 fn do_command(matches: &ArgMatches) -> Result<(), Error> {
     let mut socket =
         UnixStream::connect(matches.value_of("api-socket").unwrap()).map_err(Error::Socket)?;
@@ -306,6 +319,14 @@ fn do_command(matches: &ArgMatches) -> Result<(), Error> {
                 .value_of("net_config")
                 .unwrap(),
         ),
+        Some("snapshot") => snapshot_api_command(
+            &mut socket,
+            matches
+                .subcommand_matches("snapshot")
+                .unwrap()
+                .value_of("snapshot_config")
+                .unwrap(),
+        ),
         Some(c) => simple_api_command(&mut socket, "PUT", c, None),
         None => unreachable!(),
     }