chore: add http metrics server in datanode node when greptime start in distributed mode (#1256)

* chore: add http metrics server in datanode node when greptime start in distributed mode

* chore: add some docs and license

* chore: change metrics_addr to resolve address already in use error

* chore add metrics for meta service

* chore: replace metrics exporter http server from hyper to axum

* chore: format

* fix: datanode mode branching error

* fix: sqlness test address already in use and start metrics in defualt config

* chore: change metrics location

* chore: use builder pattern to builder httpserver

* chore: remove useless debug_assert macro in httpserver builder

* chore: resolve conflicting build error

* chore: format code

src/common/runtime/src/lib.rs

@@ -14,7 +14,7 @@
 
 pub mod error;
 mod global;
-pub mod metric;
+mod metrics;
 mod repeated_task;
 pub mod runtime;
 

src/common/runtime/src/runtime.rs

@@ -24,7 +24,7 @@ use tokio::sync::oneshot;
 pub use tokio::task::{JoinError, JoinHandle};
 
 use crate::error::*;
-use crate::metric::*;
+use crate::metrics::*;
 
 /// A runtime to run future tasks
 #[derive(Clone, Debug)]

src/common/telemetry/Cargo.toml

@@ -12,7 +12,7 @@ deadlock_detection = ["parking_lot"]
 backtrace = "0.3"
 common-error = { path = "../error" }
 console-subscriber = { version = "0.1", optional = true }
-metrics = "0.20"
+metrics = "0.20.1"
 metrics-exporter-prometheus = { version = "0.11", default-features = false }
 once_cell = "1.10"
 opentelemetry = { version = "0.17", default-features = false, features = [