runtime: add new command to collect metrics from Kata containers

Add a new command to collect metrics and return metrics to Prometheus.

Signed-off-by: bin liu <bin@hyper.sh>

src/agent/protocols/src/agent.rs

@@ -1,3 +1,8 @@
+// Copyright (c) 2020 Ant Financial
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
 // This file is generated by rust-protobuf 2.14.0. Do not edit
 // @generated
 

src/agent/protocols/src/agent_ttrpc.rs

@@ -1,3 +1,8 @@
+// Copyright (c) 2020 Ant Financial
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
 // This file is generated by ttrpc-compiler 0.3.0. Do not edit
 // @generated
 

src/agent/src/metrics.rs

@@ -1,3 +1,8 @@
+// Copyright (c) 2020 Ant Financial
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
 extern crate procfs;
 
 use prometheus::{Encoder, Gauge, GaugeVec, IntCounter, TextEncoder};
@@ -458,7 +463,7 @@ fn set_gauge_vec_proc_status(gv: &prometheus::GaugeVec, status: &procfs::process
         .set(status.vmpte.unwrap_or(0) as f64);
     gv.with_label_values(&["vmswap"])
         .set(status.vmswap.unwrap_or(0) as f64);
-    gv.with_label_values(&["hugetblpages"])
+    gv.with_label_values(&["hugetlbpages"])
         .set(status.hugetblpages.unwrap_or(0) as f64);
     gv.with_label_values(&["voluntary_ctxt_switches"])
         .set(status.voluntary_ctxt_switches.unwrap_or(0) as f64);
@@ -476,7 +481,7 @@ fn set_gauge_vec_proc_io(gv: &prometheus::GaugeVec, io_stat: &procfs::process::I
         .set(io_stat.read_bytes as f64);
     gv.with_label_values(&["write_bytes"])
         .set(io_stat.write_bytes as f64);
-    gv.with_label_values(&["cancelled_write_bytes]"])
+    gv.with_label_values(&["cancelled_write_bytes"])
         .set(io_stat.cancelled_write_bytes as f64);
 }