X-Git-Url: https://git.giacomolli.uk/onechat/blobdiff_plain/7594b9938b7343717e7a57aa7aede5d40d547483..e73e445bd78ba98271da6b5165f132299fca04b1:/model.go

diff --git a/model.go b/model.go
index f15be22..61dbc58 100644
--- a/model.go
+++ b/model.go
@@ -138,9 +138,11 @@ func (k ModelAPIKey) Authorize(ctx context.Context, header http.Header) error {
 // ChatGPT backend and the OpenAI API take the same request body and differ only
 // in the URL and the credentials. Every call sends the fixed cache key of the
 // agent, so the turns and the compactions of the agent share one prompt cache.
-// The ChatGPT backend caches only with the key in the session_id header, so a
-// call to it sends the key there and in the body. Every call is recorded in the
-// usage file.
+// A call of a subagent sends the key of the agent with "-" and the name of the
+// subagent, so that the calls of a subagent do not share a cache entry with the
+// calls of the agent that run at the same time. The ChatGPT backend caches only
+// with the key in the session_id header, so a call to it sends the key there
+// and in the body. Every call is recorded in the usage file.
 //
 // The request never holds max_output_tokens or metadata, because the ChatGPT
 // backend refuses them. It sets store to false, so the client sends the whole
@@ -173,6 +175,11 @@ func (c *ModelClient) Create(ctx context.Context, request ModelRequest) (ModelRe
 		return ModelResponse{}, errModelCallLimit
 	}
 
+	cacheKey := c.cacheKey
+	if request.Agent != "" {
+		cacheKey += "-" + request.Agent
+	}
+
 	body, err := json.Marshal(ModelRequestBody{
 		Model:        request.Model,
 		Instructions: request.Instructions,
@@ -184,7 +191,7 @@ func (c *ModelClient) Create(ctx context.Context, request ModelRequest) (ModelRe
 		Store:          false,
 		Stream:         true,
 		Include:        []string{"reasoning.encrypted_content"},
-		PromptCacheKey: c.cacheKey,
+		PromptCacheKey: cacheKey,
 	})
 	if err != nil {
 		return ModelResponse{}, fmt.Errorf("encode request: %w", err)
@@ -204,7 +211,7 @@ func (c *ModelClient) Create(ctx context.Context, request ModelRequest) (ModelRe
 
 	_, chatgpt := c.auth.(*ChatGPTAuth)
 	if chatgpt {
-		httpRequest.Header.Set("session_id", c.cacheKey)
+		httpRequest.Header.Set("session_id", cacheKey)
 	}
 
 	start := time.Now()
@@ -304,8 +311,9 @@ type ModelOutputItem struct {
 // modelUserMessage values or output items of an earlier response. Node names
 // the node that a compaction builds, or is nil. Turn names the request of a
 // turn: first or next. Agent names the subagent that makes the call, or is
-// empty for a call of the agent itself. Node, Turn, and Agent go only to the
-// usage file, never to the endpoint.
+// empty for a call of the agent itself. Node, Turn, and Agent go to the usage
+// file, never to the endpoint as fields. Agent also gives the call the cache
+// key of its subagent.
 type ModelRequest struct {
 	Model        string
 	Effort       string