chore: add metrics for log ingestion (GreptimeTeam#4411)

* chore: add metrics for log ingestion

* chore: record result as well

src/servers/src/http/event.rs

@@ -24,6 +24,7 @@ use axum::http::header::CONTENT_TYPE;
 use axum::http::{Request, StatusCode};
 use axum::response::{IntoResponse, Response};
 use axum::{async_trait, BoxError, Extension, TypedHeader};
+use common_query::{Output, OutputData};
 use common_telemetry::{error, warn};
 use pipeline::error::{CastTypeSnafu, PipelineTransformSnafu};
 use pipeline::util::to_pipeline_version;
@@ -40,6 +41,10 @@ use crate::error::{
 use crate::http::greptime_manage_resp::GreptimedbManageResponse;
 use crate::http::greptime_result_v1::GreptimedbV1Response;
 use crate::http::HttpResponse;
+use crate::metrics::{
+    METRIC_FAILURE_VALUE, METRIC_HTTP_LOGS_INGESTION_COUNTER, METRIC_HTTP_LOGS_INGESTION_ELAPSED,
+    METRIC_HTTP_LOGS_TRANSFORM_ELAPSED, METRIC_SUCCESS_VALUE,
+};
 use crate::query_handler::LogHandlerRef;
 
 #[derive(Debug, Default, Serialize, Deserialize, JsonSchema)]
@@ -298,14 +303,27 @@ async fn ingest_logs_inner(
     pipeline_data: PipelineValue,
     query_ctx: QueryContextRef,
 ) -> Result<HttpResponse> {
-    let start = std::time::Instant::now();
+    let db = query_ctx.get_db_string();
+    let exec_timer = std::time::Instant::now();
 
     let pipeline = state
         .get_pipeline(&pipeline_name, version, query_ctx.clone())
         .await?;
+
+    let transform_timer = std::time::Instant::now();
     let transformed_data: Rows = pipeline
         .exec(pipeline_data)
-        .map_err(|reason| PipelineTransformSnafu { reason }.build())
+        .inspect(|_| {
+            METRIC_HTTP_LOGS_TRANSFORM_ELAPSED
+                .with_label_values(&[db.as_str(), METRIC_SUCCESS_VALUE])
+                .observe(transform_timer.elapsed().as_secs_f64());
+        })
+        .map_err(|reason| {
+            METRIC_HTTP_LOGS_TRANSFORM_ELAPSED
+                .with_label_values(&[db.as_str(), METRIC_FAILURE_VALUE])
+                .observe(transform_timer.elapsed().as_secs_f64());
+            PipelineTransformSnafu { reason }.build()
+        })
         .context(PipelineSnafu)?;
 
     let insert_request = RowInsertRequest {
@@ -317,9 +335,26 @@ async fn ingest_logs_inner(
     };
     let output = state.insert_logs(insert_requests, query_ctx).await;
 
+    if let Ok(Output {
+        data: OutputData::AffectedRows(rows),
+        meta: _,
+    }) = &output
+    {
+        METRIC_HTTP_LOGS_INGESTION_COUNTER
+            .with_label_values(&[db.as_str()])
+            .inc_by(*rows as u64);
+        METRIC_HTTP_LOGS_INGESTION_ELAPSED
+            .with_label_values(&[db.as_str(), METRIC_SUCCESS_VALUE])
+            .observe(exec_timer.elapsed().as_secs_f64());
+    } else {
+        METRIC_HTTP_LOGS_INGESTION_ELAPSED
+            .with_label_values(&[db.as_str(), METRIC_FAILURE_VALUE])
+            .observe(exec_timer.elapsed().as_secs_f64());
+    }
+
     let response = GreptimedbV1Response::from_output(vec![output])
         .await
-        .with_execution_time(start.elapsed().as_millis() as u64);
+        .with_execution_time(exec_timer.elapsed().as_millis() as u64);
     Ok(response)
 }
 

src/servers/src/metrics.rs

@@ -44,6 +44,10 @@ pub(crate) const METRIC_POSTGRES_SIMPLE_QUERY: &str = "simple";
 pub(crate) const METRIC_POSTGRES_EXTENDED_QUERY: &str = "extended";
 pub(crate) const METRIC_METHOD_LABEL: &str = "method";
 pub(crate) const METRIC_PATH_LABEL: &str = "path";
+pub(crate) const METRIC_RESULT_LABEL: &str = "result";
+
+pub(crate) const METRIC_SUCCESS_VALUE: &str = "success";
+pub(crate) const METRIC_FAILURE_VALUE: &str = "failure";
 
 lazy_static! {
     pub static ref METRIC_ERROR_COUNTER: IntCounterVec = register_int_counter_vec!(
@@ -130,6 +134,26 @@ lazy_static! {
             &[METRIC_DB_LABEL]
         )
         .unwrap();
+    pub static ref METRIC_HTTP_LOGS_INGESTION_COUNTER: IntCounterVec = register_int_counter_vec!(
+        "greptime_servers_http_logs_ingestion_counter",
+        "servers http logs ingestion counter",
+        &[METRIC_DB_LABEL]
+    )
+    .unwrap();
+    pub static ref METRIC_HTTP_LOGS_INGESTION_ELAPSED: HistogramVec =
+        register_histogram_vec!(
+            "greptime_servers_http_logs_ingestion_elapsed",
+            "servers http logs ingestion elapsed",
+            &[METRIC_DB_LABEL, METRIC_RESULT_LABEL]
+        )
+        .unwrap();
+    pub static ref METRIC_HTTP_LOGS_TRANSFORM_ELAPSED: HistogramVec =
+        register_histogram_vec!(
+            "greptime_servers_http_logs_transform_elapsed",
+            "servers http logs transform elapsed",
+            &[METRIC_DB_LABEL, METRIC_RESULT_LABEL]
+        )
+        .unwrap();
     pub static ref METRIC_MYSQL_CONNECTIONS: IntGauge = register_int_gauge!(
         "greptime_servers_mysql_connection_count",
         "servers mysql connection count"