Refactor pool candidate scheduling

2026-10-11 03:39:49 +08:00 · 2026-05-03 20:14:29 +08:00
parent 8ebee9922c
commit a24e4a793d
55 changed files with 4825 additions and 311 deletions
@@ -2,8 +2,10 @@ mod decision;
 mod request;
 mod support;

+use async_trait::async_trait;
 use tracing::warn;

+use crate::ai_serving::planner::candidate_materialization::LocalExecutionAttemptSource;
 use crate::ai_serving::planner::plan_builders::{
    build_passthrough_stream_plan_from_decision, build_passthrough_sync_plan_from_decision,
    AiStreamAttempt, AiSyncAttempt,
@@ -18,9 +20,33 @@ use crate::{AiExecutionDecision, AppState, GatewayError};

 use self::decision::maybe_build_local_gemini_files_decision_payload_for_candidate;
 use self::support::{
+    build_local_gemini_files_candidate_attempt_source,
    materialize_local_gemini_files_candidate_attempts, resolve_local_gemini_files_decision_input,
+    LocalGeminiFilesCandidateAttempt, LocalGeminiFilesCandidateAttemptSource,
+    LocalGeminiFilesDecisionInput,
 };

+pub(crate) struct LocalGeminiFilesSyncAttemptSource<'a> {
+    state: &'a AppState,
+    parts: &'a http::request::Parts,
+    body_json: &'a serde_json::Value,
+    body_base64: Option<&'a str>,
+    body_is_empty: bool,
+    trace_id: &'a str,
+    input: LocalGeminiFilesDecisionInput,
+    spec: LocalGeminiFilesSpec,
+    candidates: LocalGeminiFilesCandidateAttemptSource<'a>,
+}
+
+pub(crate) struct LocalGeminiFilesStreamAttemptSource<'a> {
+    state: &'a AppState,
+    parts: &'a http::request::Parts,
+    trace_id: &'a str,
+    input: LocalGeminiFilesDecisionInput,
+    spec: LocalGeminiFilesSpec,
+    candidates: LocalGeminiFilesCandidateAttemptSource<'a>,
+}
+
 pub(crate) async fn build_local_gemini_files_sync_plan_and_reports_for_kind(
    state: &AppState,
    parts: &http::request::Parts,
@@ -62,6 +88,202 @@ pub(crate) async fn build_local_gemini_files_stream_plan_and_reports_for_kind(
    build_local_stream_plan_and_reports(state, parts, trace_id, decision, spec).await
 }

+#[allow(clippy::too_many_arguments)]
+pub(crate) async fn build_local_gemini_files_sync_attempt_source_for_kind<'a>(
+    state: &'a AppState,
+    parts: &'a http::request::Parts,
+    body_json: &'a serde_json::Value,
+    body_base64: Option<&'a str>,
+    body_is_empty: bool,
+    trace_id: &'a str,
+    decision: &'a GatewayControlDecision,
+    plan_kind: &str,
+) -> Result<Option<(LocalGeminiFilesSyncAttemptSource<'a>, usize)>, GatewayError> {
+    let Some(spec) = resolve_sync_spec(plan_kind) else {
+        return Ok(None);
+    };
+
+    let Some(input) = resolve_local_gemini_files_decision_input(state, trace_id, decision).await
+    else {
+        return Ok(None);
+    };
+    let (candidates, candidate_count) =
+        build_local_gemini_files_candidate_attempt_source(state, trace_id, &input).await?;
+    if candidate_count == 0 {
+        return Ok(None);
+    }
+
+    Ok(Some((
+        LocalGeminiFilesSyncAttemptSource {
+            state,
+            parts,
+            body_json,
+            body_base64,
+            body_is_empty,
+            trace_id,
+            input,
+            spec,
+            candidates,
+        },
+        candidate_count,
+    )))
+}
+
+pub(crate) async fn build_local_gemini_files_stream_attempt_source_for_kind<'a>(
+    state: &'a AppState,
+    parts: &'a http::request::Parts,
+    trace_id: &'a str,
+    decision: &'a GatewayControlDecision,
+    plan_kind: &str,
+) -> Result<Option<(LocalGeminiFilesStreamAttemptSource<'a>, usize)>, GatewayError> {
+    let Some(spec) = resolve_stream_spec(plan_kind) else {
+        return Ok(None);
+    };
+
+    let Some(input) = resolve_local_gemini_files_decision_input(state, trace_id, decision).await
+    else {
+        return Ok(None);
+    };
+    let (candidates, candidate_count) =
+        build_local_gemini_files_candidate_attempt_source(state, trace_id, &input).await?;
+    if candidate_count == 0 {
+        return Ok(None);
+    }
+
+    Ok(Some((
+        LocalGeminiFilesStreamAttemptSource {
+            state,
+            parts,
+            trace_id,
+            input,
+            spec,
+            candidates,
+        },
+        candidate_count,
+    )))
+}
+
+#[async_trait]
+impl LocalExecutionAttemptSource<AiSyncAttempt> for LocalGeminiFilesSyncAttemptSource<'_> {
+    async fn next_execution_attempt(&mut self) -> Result<Option<AiSyncAttempt>, GatewayError> {
+        while let Some(attempt) = self.candidates.next_attempt().await {
+            match self.build_sync_attempt(attempt).await? {
+                Some(attempt) => return Ok(Some(attempt)),
+                None => continue,
+            }
+        }
+        Ok(None)
+    }
+
+    async fn drain_execution_attempts(&mut self) -> Result<Vec<AiSyncAttempt>, GatewayError> {
+        let mut drained = Vec::new();
+        for attempt in self.candidates.drain_static_attempts() {
+            if let Some(attempt) = self.build_sync_attempt(attempt).await? {
+                drained.push(attempt);
+            }
+        }
+        Ok(drained)
+    }
+}
+
+#[async_trait]
+impl LocalExecutionAttemptSource<AiStreamAttempt> for LocalGeminiFilesStreamAttemptSource<'_> {
+    async fn next_execution_attempt(&mut self) -> Result<Option<AiStreamAttempt>, GatewayError> {
+        while let Some(attempt) = self.candidates.next_attempt().await {
+            match self.build_stream_attempt(attempt).await? {
+                Some(attempt) => return Ok(Some(attempt)),
+                None => continue,
+            }
+        }
+        Ok(None)
+    }
+
+    async fn drain_execution_attempts(&mut self) -> Result<Vec<AiStreamAttempt>, GatewayError> {
+        let mut drained = Vec::new();
+        for attempt in self.candidates.drain_static_attempts() {
+            if let Some(attempt) = self.build_stream_attempt(attempt).await? {
+                drained.push(attempt);
+            }
+        }
+        Ok(drained)
+    }
+}
+
+impl LocalGeminiFilesSyncAttemptSource<'_> {
+    async fn build_sync_attempt(
+        &self,
+        attempt: LocalGeminiFilesCandidateAttempt,
+    ) -> Result<Option<AiSyncAttempt>, GatewayError> {
+        let spec_metadata = local_gemini_files_spec_metadata(self.spec);
+        let Some(payload) = maybe_build_local_gemini_files_decision_payload_for_candidate(
+            self.state,
+            self.parts,
+            self.body_json,
+            self.body_base64,
+            self.body_is_empty,
+            self.trace_id,
+            &self.input,
+            attempt,
+            self.spec,
+        )
+        .await
+        else {
+            return Ok(None);
+        };
+
+        match build_passthrough_sync_plan_from_decision(self.parts, payload) {
+            Ok(value) => Ok(value),
+            Err(err) => {
+                warn!(
+                    trace_id = %self.trace_id,
+                    decision_kind = spec_metadata.decision_kind,
+                    error = ?err,
+                    "gateway local gemini files sync decision plan build failed"
+                );
+                Ok(None)
+            }
+        }
+    }
+}
+
+impl LocalGeminiFilesStreamAttemptSource<'_> {
+    async fn build_stream_attempt(
+        &self,
+        attempt: LocalGeminiFilesCandidateAttempt,
+    ) -> Result<Option<AiStreamAttempt>, GatewayError> {
+        let spec_metadata = local_gemini_files_spec_metadata(self.spec);
+        let empty_body_json = serde_json::Value::Null;
+        let Some(payload) = maybe_build_local_gemini_files_decision_payload_for_candidate(
+            self.state,
+            self.parts,
+            &empty_body_json,
+            None,
+            true,
+            self.trace_id,
+            &self.input,
+            attempt,
+            self.spec,
+        )
+        .await
+        else {
+            return Ok(None);
+        };
+
+        match build_passthrough_stream_plan_from_decision(self.parts, payload) {
+            Ok(value) => Ok(value),
+            Err(err) => {
+                warn!(
+                    trace_id = %self.trace_id,
+                    decision_kind = spec_metadata.decision_kind,
+                    error = ?err,
+                    "gateway local gemini files stream decision plan build failed"
+                );
+                Ok(None)
+            }
+        }
+    }
+}
+
 pub(crate) async fn maybe_build_sync_local_gemini_files_decision_payload(
    state: &AppState,
    parts: &http::request::Parts,