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genai: add samples for caching #186

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Jul 19, 2024
Merged

genai: add samples for caching #186

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227 changes: 227 additions & 0 deletions genai/example_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1184,6 +1184,220 @@ func ExampleClient_ListFiles() {

}

func ExampleCachedContent_create() {
ctx := context.Background()
client, err := genai.NewClient(ctx, option.WithAPIKey(os.Getenv("GEMINI_API_KEY")))
if err != nil {
log.Fatal(err)
}
defer client.Close()

file, err := uploadFile(ctx, client, filepath.Join(testDataDir, "a11.txt"))
if err != nil {
log.Fatal(err)
}
defer client.DeleteFile(ctx, file.Name)

fd := genai.FileData{URI: file.URI}

argcc := &genai.CachedContent{
Model: "gemini-1.5-flash-001",
SystemInstruction: userContent(genai.Text("You are an expert analyzing transcripts.")),
Contents: []*genai.Content{userContent(fd)},
}
cc, err := client.CreateCachedContent(ctx, argcc)
if err != nil {
log.Fatal(err)
}
defer client.DeleteCachedContent(ctx, cc.Name)

modelWithCache := client.GenerativeModelFromCachedContent(cc)
prompt := "Please summarize this transcript"
resp, err := modelWithCache.GenerateContent(ctx, genai.Text(prompt))
if err != nil {
log.Fatal(err)
}

printResponse(resp)

}

func ExampleCachedContent_createFromChat() {
ctx := context.Background()
client, err := genai.NewClient(ctx, option.WithAPIKey(os.Getenv("GEMINI_API_KEY")))
if err != nil {
log.Fatal(err)
}
defer client.Close()

file, err := uploadFile(ctx, client, filepath.Join(testDataDir, "a11.txt"))
if err != nil {
log.Fatal(err)
}
defer client.DeleteFile(ctx, file.Name)
fd := genai.FileData{URI: file.URI}

modelName := "gemini-1.5-flash-001"
model := client.GenerativeModel(modelName)
model.SystemInstruction = userContent(genai.Text("You are an expert analyzing transcripts."))

cs := model.StartChat()
resp, err := cs.SendMessage(ctx, genai.Text("Hi, could you summarize this transcript?"), fd)
if err != nil {
log.Fatal(err)
}

resp, err = cs.SendMessage(ctx, genai.Text("Okay, could you tell me more about the trans-lunar injection"))
if err != nil {
log.Fatal(err)
}

// To cache the conversation so far, pass the chat history as the list of
// contents.

argcc := &genai.CachedContent{
Model: modelName,
SystemInstruction: model.SystemInstruction,
Contents: cs.History,
}
cc, err := client.CreateCachedContent(ctx, argcc)
if err != nil {
log.Fatal(err)
}
defer client.DeleteCachedContent(ctx, cc.Name)

modelWithCache := client.GenerativeModelFromCachedContent(cc)
cs = modelWithCache.StartChat()
resp, err = cs.SendMessage(ctx, genai.Text("I didn't understand that last part, could you please explain it in simpler language?"))
if err != nil {
log.Fatal(err)
}
printResponse(resp)

}

func ExampleClient_GetCachedContent() {
ctx := context.Background()
client, err := genai.NewClient(ctx, option.WithAPIKey(os.Getenv("GEMINI_API_KEY")))
if err != nil {
log.Fatal(err)
}
defer client.Close()

file, err := uploadFile(ctx, client, filepath.Join(testDataDir, "a11.txt"))
if err != nil {
log.Fatal(err)
}
defer client.DeleteFile(ctx, file.Name)
fd := genai.FileData{URI: file.URI}

argcc := &genai.CachedContent{
Model: "gemini-1.5-flash-001",
SystemInstruction: userContent(genai.Text("You are an expert analyzing transcripts.")),
Contents: []*genai.Content{userContent(fd)},
}
cc, err := client.CreateCachedContent(ctx, argcc)
if err != nil {
log.Fatal(err)
}
defer client.DeleteCachedContent(ctx, cc.Name)

// Save the name for later
cacheName := cc.Name

// ... Later
cc2, err := client.GetCachedContent(ctx, cacheName)
if err != nil {
log.Fatal(err)
}
modelWithCache := client.GenerativeModelFromCachedContent(cc2)
prompt := "Find a lighthearted moment from this transcript"
resp, err := modelWithCache.GenerateContent(ctx, genai.Text(prompt))
if err != nil {
log.Fatal(err)
}

printResponse(resp)

}

func ExampleClient_ListCachedContents() {
ctx := context.Background()
client, err := genai.NewClient(ctx, option.WithAPIKey(os.Getenv("GEMINI_API_KEY")))
if err != nil {
log.Fatal(err)
}
defer client.Close()

file, err := uploadFile(ctx, client, filepath.Join(testDataDir, "a11.txt"))
if err != nil {
log.Fatal(err)
}
defer client.DeleteFile(ctx, file.Name)
fd := genai.FileData{URI: file.URI}

argcc := &genai.CachedContent{
Model: "gemini-1.5-flash-001",
SystemInstruction: userContent(genai.Text("You are an expert analyzing transcripts.")),
Contents: []*genai.Content{userContent(fd)},
}
cc, err := client.CreateCachedContent(ctx, argcc)
if err != nil {
log.Fatal(err)
}
defer client.DeleteCachedContent(ctx, cc.Name)

fmt.Println("My caches:")
iter := client.ListCachedContents(ctx)
for {
cc, err := iter.Next()
if err == iterator.Done {
break
}
if err != nil {
log.Fatal(err)
}
fmt.Println(" ", cc.Name)
}

}

func ExampleClient_UpdateCachedContent() {
ctx := context.Background()
client, err := genai.NewClient(ctx, option.WithAPIKey(os.Getenv("GEMINI_API_KEY")))
if err != nil {
log.Fatal(err)
}
defer client.Close()

file, err := uploadFile(ctx, client, filepath.Join(testDataDir, "a11.txt"))
if err != nil {
log.Fatal(err)
}
defer client.DeleteFile(ctx, file.Name)
fd := genai.FileData{URI: file.URI}

argcc := &genai.CachedContent{
Model: "gemini-1.5-flash-001",
SystemInstruction: userContent(genai.Text("You are an expert analyzing transcripts.")),
Contents: []*genai.Content{userContent(fd)},
}
cc, err := client.CreateCachedContent(ctx, argcc)
if err != nil {
log.Fatal(err)
}
defer client.DeleteCachedContent(ctx, cc.Name)

// You can update the TTL
newExpireTime := cc.Expiration.ExpireTime.Add(2 * time.Hour)
_, err = client.UpdateCachedContent(ctx, cc, &genai.CachedContentToUpdate{
Expiration: &genai.ExpireTimeOrTTL{ExpireTime: newExpireTime}})
if err != nil {
log.Fatal(err)
}

}

// ProxyRoundTripper is an implementation of http.RoundTripper that supports
// setting a proxy server URL for genai clients. This type should be used with
// a custom http.Client that's passed to WithHTTPClient. For such clients,
Expand Down Expand Up @@ -1242,6 +1456,19 @@ func ExampleClient_setProxy() {
printResponse(resp)
}

// userContent helps create a *genai.Content with a "user" role and one or
// more parts with less verbosity.
func userContent(parts ...genai.Part) *genai.Content {
content := &genai.Content{
Role: "user",
Parts: []genai.Part{},
}
for _, part := range parts {
content.Parts = append(content.Parts, part)
}
return content
}

func printResponse(resp *genai.GenerateContentResponse) {
for _, cand := range resp.Candidates {
if cand.Content != nil {
Expand Down
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