refactor!: make pipeline a required parameter when ingesting trace (#5828)

* feat: make pipeline a required header for trace

* test: add test case without pipeline

src/pipeline/src/error.rs

@@ -710,6 +710,12 @@ pub enum Error {
         #[snafu(implicit)]
         location: Location,
     },
+
+    #[snafu(display("Pipeline is required for this API."))]
+    PipelineMissing {
+        #[snafu(implicit)]
+        location: Location,
+    },
 }
 
 pub type Result<T> = std::result::Result<T, Error>;
@@ -819,7 +825,8 @@ impl ErrorExt for Error {
             | ValueRequiredForDispatcherRule
             | ReachedMaxNestedLevels { .. }
             | RequiredTableSuffixTemplate
-            | InvalidTableSuffixTemplate { .. } => StatusCode::InvalidArguments,
+            | InvalidTableSuffixTemplate { .. }
+            | PipelineMissing { .. } => StatusCode::InvalidArguments,
         }
     }
 

src/pipeline/src/manager.rs

@@ -23,7 +23,7 @@ use itertools::Itertools;
 use snafu::ensure;
 use util::to_pipeline_version;
 
-use crate::error::{CastTypeSnafu, InvalidCustomTimeIndexSnafu, Result};
+use crate::error::{CastTypeSnafu, InvalidCustomTimeIndexSnafu, PipelineMissingSnafu, Result};
 use crate::etl::value::time::{MS_RESOLUTION, NS_RESOLUTION, S_RESOLUTION, US_RESOLUTION};
 use crate::table::PipelineTable;
 use crate::{Pipeline, Value};
@@ -72,6 +72,7 @@ impl SelectInfo {
 }
 
 pub const GREPTIME_INTERNAL_IDENTITY_PIPELINE_NAME: &str = "greptime_identity";
+pub const GREPTIME_INTERNAL_TRACE_PIPELINE_V0_NAME: &str = "greptime_trace_v0";
 pub const GREPTIME_INTERNAL_TRACE_PIPELINE_V1_NAME: &str = "greptime_trace_v1";
 
 /// Enum for holding information of a pipeline, which is either pipeline itself,
@@ -114,11 +115,13 @@ impl PipelineWay {
     pub fn from_name_and_default(
         name: Option<&str>,
         version: Option<&str>,
-        default_pipeline: PipelineWay,
+        default_pipeline: Option<PipelineWay>,
     ) -> Result<PipelineWay> {
         if let Some(pipeline_name) = name {
             if pipeline_name == GREPTIME_INTERNAL_TRACE_PIPELINE_V1_NAME {
                 Ok(PipelineWay::OtlpTraceDirectV1)
+            } else if pipeline_name == GREPTIME_INTERNAL_TRACE_PIPELINE_V0_NAME {
+                Ok(PipelineWay::OtlpTraceDirectV0)
             } else {
                 Ok(PipelineWay::Pipeline(PipelineDefinition::from_name(
                     pipeline_name,
@@ -126,8 +129,10 @@ impl PipelineWay {
                     None,
                 )?))
             }
-        } else {
+        } else if let Some(default_pipeline) = default_pipeline {
             Ok(default_pipeline)
+        } else {
+            PipelineMissingSnafu.fail()
         }
     }
 }

src/servers/src/http/otlp.rs

@@ -92,7 +92,7 @@ pub async fn traces(
     let pipeline = PipelineWay::from_name_and_default(
         pipeline_info.pipeline_name.as_deref(),
         pipeline_info.pipeline_version.as_deref(),
-        PipelineWay::OtlpTraceDirectV0,
+        None,
     )
     .context(PipelineSnafu)?;
 
@@ -142,7 +142,7 @@ pub async fn logs(
     let pipeline = PipelineWay::from_name_and_default(
         pipeline_info.pipeline_name.as_deref(),
         pipeline_info.pipeline_version.as_deref(),
-        PipelineWay::OtlpLogDirect(Box::new(select_info)),
+        Some(PipelineWay::OtlpLogDirect(Box::new(select_info))),
     )
     .context(PipelineSnafu)?;
     let pipeline_params = pipeline_info.pipeline_params;