Files
llama-swap/proxy/proxymanager_test.go
Benson Wong 5dc6b3e6d9 Add barebones but working implementation of model preload (#209, #235)
Add barebones but working implementation of model preload

* add config test for Preload hook
* improve TestProxyManager_StartupHooks
* docs for new hook configuration
* add a .dev to .gitignore
2025-08-14 10:27:28 -07:00

895 lines
27 KiB
Go

package proxy
import (
"bytes"
"encoding/json"
"fmt"
"math/rand"
"mime/multipart"
"net/http"
"net/http/httptest"
"strconv"
"strings"
"sync"
"testing"
"time"
"github.com/mostlygeek/llama-swap/event"
"github.com/stretchr/testify/assert"
"github.com/tidwall/gjson"
)
func TestProxyManager_SwapProcessCorrectly(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
"model2": getTestSimpleResponderConfig("model2"),
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
for _, modelName := range []string{"model1", "model2"} {
reqBody := fmt.Sprintf(`{"model":"%s"}`, modelName)
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
assert.Contains(t, w.Body.String(), modelName)
}
}
func TestProxyManager_SwapMultiProcess(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
"model2": getTestSimpleResponderConfig("model2"),
},
LogLevel: "error",
Groups: map[string]GroupConfig{
"G1": {
Swap: true,
Exclusive: false,
Members: []string{"model1"},
},
"G2": {
Swap: true,
Exclusive: false,
Members: []string{"model2"},
},
},
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
tests := []string{"model1", "model2"}
for _, requestedModel := range tests {
t.Run(requestedModel, func(t *testing.T) {
reqBody := fmt.Sprintf(`{"model":"%s"}`, requestedModel)
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
assert.Contains(t, w.Body.String(), requestedModel)
})
}
// make sure there's two loaded models
assert.Equal(t, proxy.findGroupByModelName("model1").processes["model1"].CurrentState(), StateReady)
assert.Equal(t, proxy.findGroupByModelName("model2").processes["model2"].CurrentState(), StateReady)
}
// Test that a persistent group is not affected by the swapping behaviour of
// other groups.
func TestProxyManager_PersistentGroupsAreNotSwapped(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"), // goes into the default group
"model2": getTestSimpleResponderConfig("model2"),
},
LogLevel: "error",
Groups: map[string]GroupConfig{
// the forever group is persistent and should not be affected by model1
"forever": {
Swap: true,
Exclusive: false,
Persistent: true,
Members: []string{"model2"},
},
},
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
// make requests to load all models, loading model1 should not affect model2
tests := []string{"model2", "model1"}
for _, requestedModel := range tests {
reqBody := fmt.Sprintf(`{"model":"%s"}`, requestedModel)
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
assert.Contains(t, w.Body.String(), requestedModel)
}
assert.Equal(t, proxy.findGroupByModelName("model2").processes["model2"].CurrentState(), StateReady)
assert.Equal(t, proxy.findGroupByModelName("model1").processes["model1"].CurrentState(), StateReady)
}
// When a request for a different model comes in ProxyManager should wait until
// the first request is complete before swapping. Both requests should complete
func TestProxyManager_SwapMultiProcessParallelRequests(t *testing.T) {
if testing.Short() {
t.Skip("skipping slow test")
}
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
"model2": getTestSimpleResponderConfig("model2"),
"model3": getTestSimpleResponderConfig("model3"),
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
results := map[string]string{}
var wg sync.WaitGroup
var mu sync.Mutex
for key := range config.Models {
wg.Add(1)
go func(key string) {
defer wg.Done()
reqBody := fmt.Sprintf(`{"model":"%s"}`, key)
req := httptest.NewRequest("POST", "/v1/chat/completions?wait=1000ms", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
if w.Code != http.StatusOK {
t.Errorf("Expected status OK, got %d for key %s", w.Code, key)
}
mu.Lock()
var response map[string]interface{}
assert.NoError(t, json.Unmarshal(w.Body.Bytes(), &response))
result, ok := response["responseMessage"].(string)
assert.Equal(t, ok, true)
results[key] = result
mu.Unlock()
}(key)
<-time.After(time.Millisecond)
}
wg.Wait()
assert.Len(t, results, len(config.Models))
for key, result := range results {
assert.Equal(t, key, result)
}
}
func TestProxyManager_ListModelsHandler(t *testing.T) {
model1Config := getTestSimpleResponderConfig("model1")
model1Config.Name = "Model 1"
model1Config.Description = "Model 1 description is used for testing"
model2Config := getTestSimpleResponderConfig("model2")
model2Config.Name = " " // empty whitespace only strings will get ignored
model2Config.Description = " "
config := Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": model1Config,
"model2": model2Config,
"model3": getTestSimpleResponderConfig("model3"),
},
LogLevel: "error",
}
proxy := New(config)
// Create a test request
req := httptest.NewRequest("GET", "/v1/models", nil)
req.Header.Add("Origin", "i-am-the-origin")
w := httptest.NewRecorder()
// Call the listModelsHandler
proxy.ServeHTTP(w, req)
// Check the response status code
assert.Equal(t, http.StatusOK, w.Code)
// Check for Access-Control-Allow-Origin
assert.Equal(t, req.Header.Get("Origin"), w.Result().Header.Get("Access-Control-Allow-Origin"))
// Parse the JSON response
var response struct {
Data []map[string]interface{} `json:"data"`
}
if err := json.Unmarshal(w.Body.Bytes(), &response); err != nil {
t.Fatalf("Failed to parse JSON response: %v", err)
}
// Check the number of models returned
assert.Len(t, response.Data, 3)
// Check the details of each model
expectedModels := map[string]struct{}{
"model1": {},
"model2": {},
"model3": {},
}
// make all models
for _, model := range response.Data {
modelID, ok := model["id"].(string)
assert.True(t, ok, "model ID should be a string")
_, exists := expectedModels[modelID]
assert.True(t, exists, "unexpected model ID: %s", modelID)
delete(expectedModels, modelID)
object, ok := model["object"].(string)
assert.True(t, ok, "object should be a string")
assert.Equal(t, "model", object)
created, ok := model["created"].(float64)
assert.True(t, ok, "created should be a number")
assert.Greater(t, created, float64(0)) // Assuming the timestamp is positive
ownedBy, ok := model["owned_by"].(string)
assert.True(t, ok, "owned_by should be a string")
assert.Equal(t, "llama-swap", ownedBy)
// check for optional name and description
if modelID == "model1" {
name, ok := model["name"].(string)
assert.True(t, ok, "name should be a string")
assert.Equal(t, "Model 1", name)
description, ok := model["description"].(string)
assert.True(t, ok, "description should be a string")
assert.Equal(t, "Model 1 description is used for testing", description)
} else {
_, exists := model["name"]
assert.False(t, exists, "unexpected name field for model: %s", modelID)
_, exists = model["description"]
assert.False(t, exists, "unexpected description field for model: %s", modelID)
}
}
// Ensure all expected models were returned
assert.Empty(t, expectedModels, "not all expected models were returned")
}
func TestProxyManager_ListModelsHandler_SortedByID(t *testing.T) {
// Intentionally add models in non-sorted order and with an unlisted model
config := Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"zeta": getTestSimpleResponderConfig("zeta"),
"alpha": getTestSimpleResponderConfig("alpha"),
"beta": getTestSimpleResponderConfig("beta"),
"hidden": func() ModelConfig {
mc := getTestSimpleResponderConfig("hidden")
mc.Unlisted = true
return mc
}(),
},
LogLevel: "error",
}
proxy := New(config)
// Request models list
req := httptest.NewRequest("GET", "/v1/models", nil)
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
var response struct {
Data []map[string]interface{} `json:"data"`
}
if err := json.Unmarshal(w.Body.Bytes(), &response); err != nil {
t.Fatalf("Failed to parse JSON response: %v", err)
}
// We expect only the listed models in sorted order by id
expectedOrder := []string{"alpha", "beta", "zeta"}
if assert.Len(t, response.Data, len(expectedOrder), "unexpected number of listed models") {
got := make([]string, 0, len(response.Data))
for _, m := range response.Data {
id, _ := m["id"].(string)
got = append(got, id)
}
assert.Equal(t, expectedOrder, got, "models should be sorted by id ascending")
}
}
func TestProxyManager_Shutdown(t *testing.T) {
// make broken model configurations
model1Config := getTestSimpleResponderConfigPort("model1", 9991)
model1Config.Proxy = "http://localhost:10001/"
model2Config := getTestSimpleResponderConfigPort("model2", 9992)
model2Config.Proxy = "http://localhost:10002/"
model3Config := getTestSimpleResponderConfigPort("model3", 9993)
model3Config.Proxy = "http://localhost:10003/"
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": model1Config,
"model2": model2Config,
"model3": model3Config,
},
LogLevel: "error",
Groups: map[string]GroupConfig{
"test": {
Swap: false,
Members: []string{"model1", "model2", "model3"},
},
},
})
proxy := New(config)
// Start all the processes
var wg sync.WaitGroup
for _, modelName := range []string{"model1", "model2", "model3"} {
wg.Add(1)
go func(modelName string) {
defer wg.Done()
reqBody := fmt.Sprintf(`{"model":"%s"}`, modelName)
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
// send a request to trigger the proxy to load ... this should hang waiting for start up
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusBadGateway, w.Code)
assert.Contains(t, w.Body.String(), "health check interrupted due to shutdown")
}(modelName)
}
go func() {
<-time.After(time.Second)
proxy.Shutdown()
}()
wg.Wait()
}
func TestProxyManager_Unload(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
},
LogLevel: "error",
})
proxy := New(config)
reqBody := fmt.Sprintf(`{"model":"%s"}`, "model1")
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, proxy.processGroups[DEFAULT_GROUP_ID].processes["model1"].CurrentState(), StateReady)
req = httptest.NewRequest("GET", "/unload", nil)
w = httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
assert.Equal(t, w.Body.String(), "OK")
// give it a bit of time to stop
<-time.After(time.Millisecond * 250)
assert.Equal(t, proxy.processGroups[DEFAULT_GROUP_ID].processes["model1"].CurrentState(), StateStopped)
}
// Test issue #61 `Listing the current list of models and the loaded model.`
func TestProxyManager_RunningEndpoint(t *testing.T) {
// Shared configuration
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
"model2": getTestSimpleResponderConfig("model2"),
},
LogLevel: "warn",
})
// Define a helper struct to parse the JSON response.
type RunningResponse struct {
Running []struct {
Model string `json:"model"`
State string `json:"state"`
} `json:"running"`
}
// Create proxy once for all tests
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
t.Run("no models loaded", func(t *testing.T) {
req := httptest.NewRequest("GET", "/running", nil)
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
var response RunningResponse
// Check if this is a valid JSON object.
assert.NoError(t, json.Unmarshal(w.Body.Bytes(), &response))
// We should have an empty running array here.
assert.Empty(t, response.Running, "expected no running models")
})
t.Run("single model loaded", func(t *testing.T) {
// Load just a model.
reqBody := `{"model":"model1"}`
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
// Simulate browser call for the `/running` endpoint.
req = httptest.NewRequest("GET", "/running", nil)
w = httptest.NewRecorder()
proxy.ServeHTTP(w, req)
var response RunningResponse
assert.NoError(t, json.Unmarshal(w.Body.Bytes(), &response))
// Check if we have a single array element.
assert.Len(t, response.Running, 1)
// Is this the right model?
assert.Equal(t, "model1", response.Running[0].Model)
// Is the model loaded?
assert.Equal(t, "ready", response.Running[0].State)
})
}
func TestProxyManager_AudioTranscriptionHandler(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"TheExpectedModel": getTestSimpleResponderConfig("TheExpectedModel"),
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
// Create a buffer with multipart form data
var b bytes.Buffer
w := multipart.NewWriter(&b)
// Add the model field
fw, err := w.CreateFormField("model")
assert.NoError(t, err)
_, err = fw.Write([]byte("TheExpectedModel"))
assert.NoError(t, err)
// Add a file field
fw, err = w.CreateFormFile("file", "test.mp3")
assert.NoError(t, err)
// Generate random content length between 10 and 20
contentLength := rand.Intn(11) + 10 // 10 to 20
content := make([]byte, contentLength)
_, err = fw.Write(content)
assert.NoError(t, err)
w.Close()
// Create the request with the multipart form data
req := httptest.NewRequest("POST", "/v1/audio/transcriptions", &b)
req.Header.Set("Content-Type", w.FormDataContentType())
rec := httptest.NewRecorder()
proxy.ServeHTTP(rec, req)
// Verify the response
assert.Equal(t, http.StatusOK, rec.Code)
var response map[string]string
err = json.Unmarshal(rec.Body.Bytes(), &response)
assert.NoError(t, err)
assert.Equal(t, "TheExpectedModel", response["model"])
assert.Equal(t, response["text"], fmt.Sprintf("The length of the file is %d bytes", contentLength)) // matches simple-responder
assert.Equal(t, strconv.Itoa(370+contentLength), response["h_content_length"])
}
// Test useModelName in configuration sends overrides what is sent to upstream
func TestProxyManager_UseModelName(t *testing.T) {
upstreamModelName := "upstreamModel"
modelConfig := getTestSimpleResponderConfig(upstreamModelName)
modelConfig.UseModelName = upstreamModelName
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": modelConfig,
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
requestedModel := "model1"
t.Run("useModelName over rides requested model: /v1/chat/completions", func(t *testing.T) {
reqBody := fmt.Sprintf(`{"model":"%s"}`, requestedModel)
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
assert.Contains(t, w.Body.String(), upstreamModelName)
// make sure the content length was set correctly
// simple-responder will return the content length it got in the response
body := w.Body.Bytes()
contentLength := int(gjson.GetBytes(body, "h_content_length").Int())
assert.Equal(t, len(fmt.Sprintf(`{"model":"%s"}`, upstreamModelName)), contentLength)
})
t.Run("useModelName over rides requested model: /v1/audio/transcriptions", func(t *testing.T) {
// Create a buffer with multipart form data
var b bytes.Buffer
w := multipart.NewWriter(&b)
// Add the model field
fw, err := w.CreateFormField("model")
assert.NoError(t, err)
_, err = fw.Write([]byte(requestedModel))
assert.NoError(t, err)
// Add a file field
fw, err = w.CreateFormFile("file", "test.mp3")
assert.NoError(t, err)
_, err = fw.Write([]byte("test"))
assert.NoError(t, err)
w.Close()
// Create the request with the multipart form data
req := httptest.NewRequest("POST", "/v1/audio/transcriptions", &b)
req.Header.Set("Content-Type", w.FormDataContentType())
rec := httptest.NewRecorder()
proxy.ServeHTTP(rec, req)
// Verify the response
assert.Equal(t, http.StatusOK, rec.Code)
var response map[string]string
err = json.Unmarshal(rec.Body.Bytes(), &response)
assert.NoError(t, err)
assert.Equal(t, upstreamModelName, response["model"])
})
}
func TestProxyManager_CORSOptionsHandler(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
},
LogLevel: "error",
})
tests := []struct {
name string
method string
requestHeaders map[string]string
expectedStatus int
expectedHeaders map[string]string
}{
{
name: "OPTIONS with no headers",
method: "OPTIONS",
expectedStatus: http.StatusNoContent,
expectedHeaders: map[string]string{
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "GET, POST, PUT, PATCH, DELETE, OPTIONS",
"Access-Control-Allow-Headers": "Content-Type, Authorization, Accept, X-Requested-With",
},
},
{
name: "OPTIONS with specific headers",
method: "OPTIONS",
requestHeaders: map[string]string{
"Access-Control-Request-Headers": "X-Custom-Header, Some-Other-Header",
},
expectedStatus: http.StatusNoContent,
expectedHeaders: map[string]string{
"Access-Control-Allow-Origin": "*",
"Access-Control-Allow-Methods": "GET, POST, PUT, PATCH, DELETE, OPTIONS",
"Access-Control-Allow-Headers": "X-Custom-Header, Some-Other-Header",
},
},
{
name: "Non-OPTIONS request",
method: "GET",
expectedStatus: http.StatusNotFound, // Since we don't have a GET route defined
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
req := httptest.NewRequest(tt.method, "/v1/chat/completions", nil)
for k, v := range tt.requestHeaders {
req.Header.Set(k, v)
}
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, tt.expectedStatus, w.Code)
for header, expectedValue := range tt.expectedHeaders {
assert.Equal(t, expectedValue, w.Header().Get(header))
}
})
}
}
func TestProxyManager_Upstream(t *testing.T) {
configStr := fmt.Sprintf(`
logLevel: error
models:
model1:
cmd: %s -port ${PORT} -silent -respond model1
aliases: [model-alias]
`, getSimpleResponderPath())
config, err := LoadConfigFromReader(strings.NewReader(configStr))
assert.NoError(t, err)
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
t.Run("main model name", func(t *testing.T) {
req := httptest.NewRequest("GET", "/upstream/model1/test", nil)
rec := httptest.NewRecorder()
proxy.ServeHTTP(rec, req)
assert.Equal(t, http.StatusOK, rec.Code)
assert.Equal(t, "model1", rec.Body.String())
})
t.Run("model alias", func(t *testing.T) {
req := httptest.NewRequest("GET", "/upstream/model-alias/test", nil)
rec := httptest.NewRecorder()
proxy.ServeHTTP(rec, req)
assert.Equal(t, http.StatusOK, rec.Code)
assert.Equal(t, "model1", rec.Body.String())
})
}
func TestProxyManager_ChatContentLength(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
reqBody := fmt.Sprintf(`{"model":"%s", "x": "this is just some content to push the length out a bit"}`, "model1")
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
var response map[string]interface{}
assert.NoError(t, json.Unmarshal(w.Body.Bytes(), &response))
assert.Equal(t, "81", response["h_content_length"])
assert.Equal(t, "model1", response["responseMessage"])
}
func TestProxyManager_FiltersStripParams(t *testing.T) {
modelConfig := getTestSimpleResponderConfig("model1")
modelConfig.Filters = ModelFilters{
StripParams: "temperature, model, stream",
}
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
LogLevel: "error",
Models: map[string]ModelConfig{
"model1": modelConfig,
},
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
reqBody := `{"model":"model1", "temperature":0.1, "x_param":"123", "y_param":"abc", "stream":true}`
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
var response map[string]interface{}
assert.NoError(t, json.Unmarshal(w.Body.Bytes(), &response))
// `temperature` and `stream` are gone but model remains
assert.Equal(t, `{"model":"model1", "x_param":"123", "y_param":"abc"}`, response["request_body"])
// assert.Nil(t, response["temperature"])
// assert.Equal(t, "123", response["x_param"])
// assert.Equal(t, "abc", response["y_param"])
// t.Logf("%v", response)
}
func TestProxyManager_MiddlewareWritesMetrics_NonStreaming(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
// Make a non-streaming request
reqBody := `{"model":"model1", "stream": false}`
req := httptest.NewRequest("POST", "/v1/chat/completions", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
// Check that metrics were recorded
metrics := proxy.metricsMonitor.GetMetrics()
if !assert.NotEmpty(t, metrics, "metrics should be recorded for non-streaming request") {
return
}
// Verify the last metric has the correct model
lastMetric := metrics[len(metrics)-1]
assert.Equal(t, "model1", lastMetric.Model)
assert.Equal(t, 25, lastMetric.InputTokens, "input tokens should be 25")
assert.Equal(t, 10, lastMetric.OutputTokens, "output tokens should be 10")
assert.Greater(t, lastMetric.TokensPerSecond, 0.0, "tokens per second should be greater than 0")
assert.Greater(t, lastMetric.DurationMs, 0, "duration should be greater than 0")
}
func TestProxyManager_MiddlewareWritesMetrics_Streaming(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
// Make a streaming request
reqBody := `{"model":"model1", "stream": true}`
req := httptest.NewRequest("POST", "/v1/chat/completions?stream=true", bytes.NewBufferString(reqBody))
w := httptest.NewRecorder()
proxy.ServeHTTP(w, req)
assert.Equal(t, http.StatusOK, w.Code)
// Check that metrics were recorded
metrics := proxy.metricsMonitor.GetMetrics()
if !assert.NotEmpty(t, metrics, "metrics should be recorded for streaming request") {
return
}
// Verify the last metric has the correct model
lastMetric := metrics[len(metrics)-1]
assert.Equal(t, "model1", lastMetric.Model)
assert.Equal(t, 25, lastMetric.InputTokens, "input tokens should be 25")
assert.Equal(t, 10, lastMetric.OutputTokens, "output tokens should be 10")
assert.Greater(t, lastMetric.TokensPerSecond, 0.0, "tokens per second should be greater than 0")
assert.Greater(t, lastMetric.DurationMs, 0, "duration should be greater than 0")
}
func TestProxyManager_HealthEndpoint(t *testing.T) {
config := AddDefaultGroupToConfig(Config{
HealthCheckTimeout: 15,
Models: map[string]ModelConfig{
"model1": getTestSimpleResponderConfig("model1"),
},
LogLevel: "error",
})
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
req := httptest.NewRequest("GET", "/health", nil)
rec := httptest.NewRecorder()
proxy.ServeHTTP(rec, req)
assert.Equal(t, http.StatusOK, rec.Code)
assert.Equal(t, "OK", rec.Body.String())
}
func TestProxyManager_StartupHooks(t *testing.T) {
// using real YAML as the configuration has gotten more complex
// is the right approach as LoadConfigFromReader() does a lot more
// than parse YAML now. Eventually migrate all tests to use this approach
configStr := strings.Replace(`
logLevel: error
hooks:
on_startup:
preload:
- model1
- model2
groups:
preloadTestGroup:
swap: false
members:
- model1
- model2
models:
model1:
cmd: ${simpleresponderpath} --port ${PORT} --silent --respond model1
model2:
cmd: ${simpleresponderpath} --port ${PORT} --silent --respond model2
`, "${simpleresponderpath}", simpleResponderPath, -1)
// Create a test model configuration
config, err := LoadConfigFromReader(strings.NewReader(configStr))
if !assert.NoError(t, err, "Invalid configuration") {
return
}
preloadChan := make(chan ModelPreloadedEvent, 2) // buffer for 2 expected events
unsub := event.On(func(e ModelPreloadedEvent) {
preloadChan <- e
})
defer unsub()
// Create the proxy which should trigger preloading
proxy := New(config)
defer proxy.StopProcesses(StopWaitForInflightRequest)
for i := 0; i < 2; i++ {
select {
case <-preloadChan:
case <-time.After(5 * time.Second):
t.Fatal("timed out waiting for models to preload")
}
}
// make sure they are both loaded
_, foundGroup := proxy.processGroups["preloadTestGroup"]
if !assert.True(t, foundGroup, "preloadTestGroup should exist") {
return
}
assert.Equal(t, StateReady, proxy.processGroups["preloadTestGroup"].processes["model1"].CurrentState())
assert.Equal(t, StateReady, proxy.processGroups["preloadTestGroup"].processes["model2"].CurrentState())
}