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fix(provider): list models in one page for Anthropic and Gemini

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Model discovery used each API's default page size: 20 for Anthropic and
50 for Gemini. A full catalog needed several sequential requests, and at
pod start that overran the 5s warm-fill budget. One replica then
logged "initial discovery ... context deadline exceeded" and went
without that provider's models until the next probe. Every page now
asks for the documented maximum of 1000: Anthropic limit and Gemini
pageSize. Gemini gets pageSize on each page, because it requires the
same parameters across one listing.

Claude-Session: https://claude.ai/code/session_01V5jYJNxpDFdJkyyExpADrv
This commit is contained in:
lukaszraczylo
2026-09-23 13:46:11 +01:00
parent 28722d983f
commit 8ac20d8d5e
4 changed files with 45 additions and 9 deletions
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provider_gemini_test.go
+9 -1
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@@ -688,9 +688,10 @@ func TestGeminiAdapter_ListModels(t *testing.T) {
// test: a non-empty nextPageToken must make listModels fetch a second
// page via ?pageToken=<token> and return the union of both pages.
func TestGeminiAdapter_ListModels_FollowsPagination(t *testing.T) {
var gotPageTokens []string
var gotPageTokens, gotPageSizes []string
srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
gotPageTokens = append(gotPageTokens, r.URL.Query().Get("pageToken"))
gotPageSizes = append(gotPageSizes, r.URL.Query().Get("pageSize"))
w.Header().Set("Content-Type", "application/json")
if r.URL.Query().Get("pageToken") == "" {
_, _ = w.Write([]byte(`{"models":[{"name":"models/gemini-2.5-pro"},{"name":"models/gemini-2.5-flash"}],"nextPageToken":"page2"}`))
@@ -721,6 +722,13 @@ func TestGeminiAdapter_ListModels_FollowsPagination(t *testing.T) {
if len(gotPageTokens) != 2 || gotPageTokens[0] != "" || gotPageTokens[1] != "page2" {
t.Errorf("pageToken sequence = %#v, want [\"\", \"page2\"] (first page unqualified, second page's pageToken = first page's nextPageToken)", gotPageTokens)
}
// Gemini requires identical parameters on every page of one listing,
// so pageSize must ride along with the pageToken too.
for i, s := range gotPageSizes {
if s != "1000" {
t.Errorf("page %d pageSize = %q, want \"1000\"", i, s)
}
}
}
// TestGeminiAdapter_ListModels_PageCapStopsRunawayPagination proves the