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* new greeter template to show durable execution * new greeter template for Java templates * new greeter template for Kotlin templates * new greeter template for Go templates * new greeter template for Python templates * new greeter template for Rust templates * Fix comments * Add ghost to error messages * Fix wrong imports in templates * Remove licenses of templates because they are shown as code snippets in the docs * Make code snippets more concise * Use pydantic for Python template * throw runtime exception in java templates * Fix import in TS deno template * Kotlin template: Rename to utils.kt * Upgrade go version * Fix rust template * Fix Java templates issues * Fix cloudflare workers template * Fix package name quarkus template * Fix Rust shuttle template * Clean imports
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
|
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| // You can remove this file. | ||
| // It's only purpose is providing stubs for the template. | ||
|
|
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| export function sendNotification(greetingId: string, name: string) { | ||
| if (Math.random() < 0.5) { // 50% chance of failure | ||
| console.error(`👻 Failed to send notification: ${greetingId} - ${name}`); | ||
| throw new Error(`Failed to send notification ${greetingId} - ${name}`); | ||
| } | ||
| console.log(`Notification sent: ${greetingId} - ${name}`); | ||
| } | ||
|
|
||
| export function sendReminder(greetingId: string) { | ||
| if (Math.random() < 0.5) { // 50% chance of failure | ||
| console.error(`👻 Failed to send reminder: ${greetingId}`); | ||
| throw new Error(`Failed to send reminder: ${greetingId}`); | ||
| } | ||
| console.log(`Reminder sent: ${greetingId}`); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,17 +1,23 @@ | ||
| import { Context, endpoint, service } from "@restatedev/restate-sdk-cloudflare-workers/fetch"; | ||
| import * as restate from "@restatedev/restate-sdk-cloudflare-workers/fetch"; | ||
| import { sendNotification, sendReminder } from "./utils.js"; | ||
|
|
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| // Template of a Restate service and handler | ||
| // | ||
| // Have a look at the TS QuickStart: https://docs.restate.dev/get_started/quickstart?sdk=ts | ||
| // | ||
| export default restate | ||
| .endpoint() | ||
| .bind( | ||
| restate.service({ | ||
| name: "greeter", | ||
| handlers: { | ||
| greet: async (ctx: restate.Context, name: string) => { | ||
| // Durably execute a set of steps; resilient against failures | ||
| const greetingId = ctx.rand.uuidv4(); | ||
| await ctx.run(() => sendNotification(greetingId, name)); | ||
| await ctx.sleep(1000); | ||
| await ctx.run(() => sendReminder(greetingId)); | ||
|
|
||
| const greeter = service({ | ||
| name: "greeter", | ||
| handlers: { | ||
| greet: async (ctx: Context, greeting: string) => { | ||
| return `${greeting}!`; | ||
| }, | ||
| }, | ||
| }); | ||
|
|
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| export default endpoint().bind(greeter).handler(); | ||
| // Respond to caller | ||
| return `You said hi to ${name}!`; | ||
| }, | ||
| }, | ||
| }), | ||
| ) | ||
| .handler(); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // You can remove this file. | ||
| // It's only purpose is providing stubs for the template. | ||
|
|
||
| export function sendNotification(greetingId: string, name: string) { | ||
| if (Math.random() < 0.5) { | ||
| // 50% chance of failure | ||
| console.error(`👻 Failed to send notification: ${greetingId} - ${name}`); | ||
| throw new Error(`Failed to send notification ${greetingId} - ${name}`); | ||
| } | ||
| console.log(`Notification sent: ${greetingId} - ${name}`); | ||
| } | ||
|
|
||
| export function sendReminder(greetingId: string) { | ||
| if (Math.random() < 0.5) { | ||
| // 50% chance of failure | ||
| console.error(`👻 Failed to send reminder: ${greetingId}`); | ||
| throw new Error(`Failed to send reminder: ${greetingId}`); | ||
| } | ||
| console.log(`Reminder sent: ${greetingId}`); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,23 +1,26 @@ | ||
| import { | ||
| Context, | ||
| endpoint, | ||
| service, | ||
| } from "npm:@restatedev/restate-sdk@^1.4.0/fetch"; | ||
| import * as restate from "npm:@restatedev/restate-sdk/fetch"; | ||
| import { sendNotification, sendReminder } from "./utils.ts"; | ||
|
|
||
| // Template of a Restate service and handler | ||
| // | ||
| // Have a look at the TS QuickStart: https://docs.restate.dev/get_started/quickstart?sdk=ts | ||
| // | ||
| const handler = restate | ||
| .endpoint() | ||
| .bind( | ||
| restate.service({ | ||
| name: "Greeter", | ||
| handlers: { | ||
| greet: async (ctx: restate.Context, name: string) => { | ||
| // Durably execute a set of steps; resilient against failures | ||
| const greetingId = ctx.rand.uuidv4(); | ||
| await ctx.run(() => sendNotification(greetingId, name)); | ||
| await ctx.sleep(1000); | ||
| await ctx.run(() => sendReminder(greetingId)); | ||
|
|
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| const greeter = service({ | ||
| name: "Greeter", | ||
| handlers: { | ||
| greet: async (ctx: Context, greeting: string) => { | ||
| return `${greeting}!`; | ||
| }, | ||
| }, | ||
| }); | ||
|
|
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| const handler = endpoint().bind(greeter).bidirectional().handler(); | ||
| // Respond to caller | ||
| return `You said hi to ${name}!`; | ||
| }, | ||
| }, | ||
| }), | ||
| ) | ||
| .bidirectional() | ||
| .handler(); | ||
|
|
||
| Deno.serve({ port: 9080 }, handler.fetch); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // You can remove this file. | ||
| // It's only purpose is providing stubs for the template. | ||
|
|
||
| export function sendNotification(greetingId: string, name: string) { | ||
| if (Math.random() < 0.5) { | ||
| // 50% chance of failure | ||
| console.error(`👻 Failed to send notification: ${greetingId} - ${name}`); | ||
| throw new Error(`Failed to send notification ${greetingId} - ${name}`); | ||
| } | ||
| console.log(`Notification sent: ${greetingId} - ${name}`); | ||
| } | ||
|
|
||
| export function sendReminder(greetingId: string) { | ||
| if (Math.random() < 0.5) { | ||
| // 50% chance of failure | ||
| console.error(`👻 Failed to send reminder: ${greetingId}`); | ||
| throw new Error(`Failed to send reminder: ${greetingId}`); | ||
| } | ||
| console.log(`Reminder sent: ${greetingId}`); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,14 +1,33 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
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| restate "github.com/restatedev/sdk-go" | ||
| "time" | ||
| ) | ||
|
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| // Greeter is a struct which represents a Restate service; reflection will turn exported methods into service handlers | ||
| type Greeter struct{} | ||
|
|
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| func (Greeter) Greet(ctx restate.Context, greeting string) (string, error) { | ||
| return fmt.Sprintf("%s!", greeting), nil | ||
| func (Greeter) Greet(ctx restate.Context, name string) (string, error) { | ||
| // Durably execute a set of steps; resilient against failures | ||
| greetingId := restate.Rand(ctx).UUID().String() | ||
|
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| if _, err := restate.Run(ctx, func(ctx restate.RunContext) (restate.Void, error) { | ||
| return restate.Void{}, SendNotification(greetingId, name) | ||
| }); err != nil { | ||
| return "", err | ||
| } | ||
|
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| if err := restate.Sleep(ctx, 1*time.Second); err != nil { | ||
| return "", err | ||
| } | ||
|
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| if _, err := restate.Run(ctx, func(ctx restate.RunContext) (restate.Void, error) { | ||
| return restate.Void{}, SendReminder(greetingId) | ||
| }); err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| // Respond to caller | ||
| return "You said hi to " + name + "!", nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math/rand" | ||
| ) | ||
|
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| func SendNotification(greetingId string, name string) error { | ||
| if rand.Float32() < 0.5 { // 50% chance of failure | ||
| fmt.Printf("👻 Failed to send notification: %s - %s\n", greetingId, name) | ||
| return fmt.Errorf("failed to send notification: %s - %s", greetingId, name) | ||
| } | ||
| fmt.Printf("Notification sent: %s - %s\n", greetingId, name) | ||
| return nil | ||
| } | ||
|
|
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| func SendReminder(greetingId string) error { | ||
| if rand.Float32() < 0.5 { // 50% chance of failure | ||
| fmt.Printf("👻 Failed to send reminder: %s\n", greetingId) | ||
| return fmt.Errorf("failed to send reminder: %s", greetingId) | ||
| } | ||
| fmt.Printf("Reminder sent: %s\n", greetingId) | ||
| return nil | ||
| } |
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45 changes: 21 additions & 24 deletions
45
templates/java-gradle/src/main/java/my/example/Greeter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,36 +1,33 @@ | ||
| /* | ||
| * Copyright (c) 2024 - Restate Software, Inc., Restate GmbH | ||
| * | ||
| * This file is part of the Restate examples, | ||
| * which is released under the MIT license. | ||
| * | ||
| * You can find a copy of the license in the file LICENSE | ||
| * in the root directory of this repository or package or at | ||
| * https://github.com/restatedev/examples/ | ||
| */ | ||
|
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| package my.example; | ||
|
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| import dev.restate.sdk.Context; | ||
| import dev.restate.sdk.annotation.Handler; | ||
| import dev.restate.sdk.annotation.Service; | ||
| import dev.restate.sdk.http.vertx.RestateHttpEndpointBuilder; | ||
|
|
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| /** | ||
| * Template of a Restate service and handler | ||
| * Have a look at the Java QuickStart to learn how to run this: https://docs.restate.dev/get_started/quickstart?sdk=java | ||
| */ | ||
| import java.time.Duration; | ||
|
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| import static my.example.Utils.sendNotification; | ||
| import static my.example.Utils.sendReminder; | ||
|
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| @Service | ||
| public class Greeter { | ||
|
|
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| @Handler | ||
| public String greet(Context ctx, String greeting) { | ||
| return "Hello " + greeting; | ||
| } | ||
| @Handler | ||
| public String greet(Context ctx, String name) { | ||
| // Durably execute a set of steps; resilient against failures | ||
| String greetingId = ctx.random().nextUUID().toString(); | ||
| ctx.run(() -> sendNotification(greetingId, name)); | ||
| ctx.sleep(Duration.ofMillis(1000)); | ||
| ctx.run(() -> sendReminder(greetingId)); | ||
|
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| // Respond to caller | ||
| return "You said hi to " + name + "!"; | ||
| } | ||
|
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| public static void main(String[] args) { | ||
| RestateHttpEndpointBuilder.builder() | ||
| .bind(new Greeter()) | ||
| .buildAndListen(); | ||
| } | ||
| public static void main(String[] args) { | ||
| RestateHttpEndpointBuilder.builder() | ||
| .bind(new Greeter()) | ||
| .buildAndListen(); | ||
| } | ||
| } |
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