任务生命周期

Scheduler 维护一个内存延迟队列。任务使用 id、future 或 delay、payload 以及字符串数组 labels 入队。工作者通过 lease 预留任务，并通过删除任务来确认完成。

入队

curl -X POST "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "id": "task-001",
    "payload": { "action": "generate_report" },
    "delay": "1h",
    "labels": ["team:analytics", "env:production"]
  }'

POST /schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks HTTP/1.1
Host: api.hola.cloud
X-API-Key: YOUR_API_KEY
Content-Type: application/json

{
    "id": "task-001",
    "payload": { "action": "generate_report" },
    "delay": "1h",
    "labels": ["team:analytics", "env:production"]
  }

// Go 1.21+, standard library only. Save as main.go and run: go run main.go
package main

import (
	"fmt"
	"io"
	"net/http"
	"encoding/json"
	"strings"
)

func main() {
	payload := map[string]any{"delay": "1h", "id": "task-001", "labels": []any{"team:analytics", "env:production"}, "payload": map[string]any{"action": "generate_report"}}
	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		panic(err)
	}
	body := string(bodyBytes)

	req, err := http.NewRequest("POST", "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", strings.NewReader(body))
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", "YOUR_API_KEY")
	req.Header.Set("Content-Type", "application/json")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(resp.Status)
	fmt.Println(string(responseBody))
}

<?php
// PHP 8+ with the curl extension. Save as example.php and run: php example.php

$payload = ['delay' => '1h', 'id' => 'task-001', 'labels' => ['team:analytics', 'env:production'], 'payload' => ['action' => 'generate_report']];
$body = json_encode($payload);

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        'X-API-Key: YOUR_API_KEY',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
echo curl_getinfo($ch, CURLINFO_RESPONSE_CODE), "\n", $response, "\n";
curl_close($ch);

# Python 3.8+. Install: pip install requests. Save as example.py and run: python example.py
import requests

headers = {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json",
}

payload = {"delay": "1h", "id": "task-001", "labels": ["team:analytics", "env:production"], "payload": {"action": "generate_report"}}

response = requests.request(
    "POST",
    "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks",
    headers=headers,
    json=payload
)

print(response.status_code)
print(response.text)

// Node.js 18+. Save as example.mjs and run: node example.mjs
const payload = {"delay": "1h", "id": "task-001", "labels": ["team:analytics", "env:production"], "payload": {"action": "generate_report"}};

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

console.log(response.status);
console.log(await response.text());

const payload = {"delay": "1h", "id": "task-001", "labels": ["team:analytics", "env:production"], "payload": {"action": "generate_report"}};

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

console.log(response.status);
console.log(await response.text());

// Java 17+, standard library only. Save as Main.java and run: java Main.java
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        var body = """
{
    "id": "task-001",
    "payload": { "action": "generate_report" },
    "delay": "1h",
    "labels": ["team:analytics", "env:production"]
  }
""";

        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks"))
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .header("X-API-Key", "YOUR_API_KEY")
            .header("Content-Type", "application/json")
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.statusCode());
        System.out.println(response.body());
    }
}

响应：HTTP 202 Accepted，响应体为空。

列表

 1{
 2  "scheduled": [
 3    {
 4      "id": "task-001",
 5      "future": "2025-06-22T00:00:00Z",
 6      "labels": ["team:analytics"]
 7    }
 8  ],
 9  "inflight": [],
10  "scheduled_meta": { "page": 1, "per_page": 25, "total": 1, "total_pages": 1 },
11  "inflight_meta": { "page": 1, "per_page": 25, "total": 0, "total_pages": 0 }
12}

预留

1{ "worktime": "60s" }

1{
2  "id": "task-001",
3  "payload": { "action": "generate_report" },
4  "lease_expires_at": "2025-06-21T12:01:00Z",
5  "labels": ["team:analytics"]
6}

没有可用任务时，API 返回 204 No Content。

延长 Lease

1{ "extension": "30s" }

1{ "lease_expires_at": "2025-06-21T12:01:30Z" }

确认

工作者通过删除任务确认完成：

curl -X DELETE "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001" \
  -H "X-API-Key: YOUR_API_KEY"

DELETE /schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001 HTTP/1.1
Host: api.hola.cloud
X-API-Key: YOUR_API_KEY

// Go 1.21+, standard library only. Save as main.go and run: go run main.go
package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("DELETE", "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", "YOUR_API_KEY")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(resp.Status)
	fmt.Println(string(responseBody))
}

<?php
// PHP 8+ with the curl extension. Save as example.php and run: php example.php

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'DELETE',
    CURLOPT_HTTPHEADER => [
        'X-API-Key: YOUR_API_KEY',
    ],
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
echo curl_getinfo($ch, CURLINFO_RESPONSE_CODE), "\n", $response, "\n";
curl_close($ch);

# Python 3.8+. Install: pip install requests. Save as example.py and run: python example.py
import requests

headers = {
    "X-API-Key": "YOUR_API_KEY",
}

response = requests.request(
    "DELETE",
    "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001",
    headers=headers
)

print(response.status_code)
print(response.text)

// Node.js 18+. Save as example.mjs and run: node example.mjs
const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001", {
  method: "DELETE",
  headers: {
    "X-API-Key": "YOUR_API_KEY"
  }
});

console.log(response.status);
console.log(await response.text());

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001", {
  method: "DELETE",
  headers: {
    "X-API-Key": "YOUR_API_KEY"
  }
});

console.log(response.status);
console.log(await response.text());

// Java 17+, standard library only. Save as Main.java and run: java Main.java
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001"))
            .method("DELETE", HttpRequest.BodyPublishers.noBody())
            .header("X-API-Key", "YOUR_API_KEY")
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.statusCode());
        System.out.println(response.body());
    }
}

响应：HTTP 204 No Content。

重新调度

1{ "delay": "5m" }

1{
2  "id": "task-001",
3  "future": "2025-06-21T12:06:00Z"
4}

SSE

SSE stream 只发送 snapshot 事件，包含 scheduled、inflight、分页 meta 和 health。

入队

列表

预留

延长 Lease

确认

重新调度

SSE

任务生命周期

入队

列表

预留

延长 Lease

确认

重新调度

SSE

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