Azure Storage Queue Ts Agent Skill

by microsoft

3k tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

2857

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/microsoft/skills --skill azure-storage-queue-ts

The instruction itself

35 sections, as written by the author

@azure/storage-queue (TypeScript/JavaScript)

SDK for Azure Queue Storage operations — send, receive, peek, and manage messages in queues.

Installation

npm install @azure/storage-queue @azure/identity

Current Version: 12.x

Node.js: >= 18.0.0

Environment Variables

AZURE_STORAGE_ACCOUNT_NAME=<account-name>
AZURE_STORAGE_ACCOUNT_KEY=<account-key>
# OR connection string
AZURE_STORAGE_CONNECTION_STRING=DefaultEndpointsProtocol=https;AccountName=...
AZURE_TOKEN_CREDENTIALS=prod # Required only if DefaultAzureCredential is used in production

Authentication

Microsoft Entra Token Credential (Recommended)

import { QueueServiceClient } from "@azure/storage-queue";
import { DefaultAzureCredential, ManagedIdentityCredential } from "@azure/identity";

// Local dev: DefaultAzureCredential. Production: set AZURE_TOKEN_CREDENTIALS=prod or AZURE_TOKEN_CREDENTIALS=<specific_credential>
const credential = new DefaultAzureCredential({requiredEnvVars: ["AZURE_TOKEN_CREDENTIALS"]});
// Or use a specific credential directly in production:
// See https://learn.microsoft.com/javascript/api/overview/azure/identity-readme?view=azure-node-latest#credential-classes
// const credential = new ManagedIdentityCredential();

const accountName = process.env.AZURE_STORAGE_ACCOUNT_NAME!;
const client = new QueueServiceClient(
  `https://${accountName}.queue.core.windows.net`,
  credential
);

Connection String

import { QueueServiceClient } from "@azure/storage-queue";

const client = QueueServiceClient.fromConnectionString(
  process.env.AZURE_STORAGE_CONNECTION_STRING!
);

StorageSharedKeyCredential (Node.js only)

import { QueueServiceClient, StorageSharedKeyCredential } from "@azure/storage-queue";

const accountName = process.env.AZURE_STORAGE_ACCOUNT_NAME!;
const accountKey = process.env.AZURE_STORAGE_ACCOUNT_KEY!;

const sharedKeyCredential = new StorageSharedKeyCredential(accountName, accountKey);
const client = new QueueServiceClient(
  `https://${accountName}.queue.core.windows.net`,
  sharedKeyCredential
);

SAS Token

import { QueueServiceClient } from "@azure/storage-queue";

const accountName = process.env.AZURE_STORAGE_ACCOUNT_NAME!;
const sasToken = process.env.AZURE_STORAGE_SAS_TOKEN!;

const client = new QueueServiceClient(
  `https://${accountName}.queue.core.windows.net${sasToken}`
);

Client Hierarchy

QueueServiceClient (account level)
└── QueueClient (queue level)
    └── Messages (send, receive, peek, delete)

Queue Operations

Create Queue

const queueClient = client.getQueueClient("my-queue");
await queueClient.create();

// Or create if not exists
await queueClient.createIfNotExists();

List Queues

for await (const queue of client.listQueues()) {
  console.log(queue.name);
}

// With prefix filter
for await (const queue of client.listQueues({ prefix: "task-" })) {
  console.log(queue.name);
}

Delete Queue

await queueClient.delete();

// Or delete if exists
await queueClient.deleteIfExists();

Get Queue Properties

const properties = await queueClient.getProperties();
console.log("Approximate message count:", properties.approximateMessagesCount);
console.log("Metadata:", properties.metadata);

Set Queue Metadata

await queueClient.setMetadata({
  department: "engineering",
  priority: "high",
});

Message Operations

Send Message

const queueClient = client.getQueueClient("my-queue");

// Simple message
await queueClient.sendMessage("Hello, World!");

// With options
await queueClient.sendMessage("Delayed message", {
  visibilityTimeout: 60, // Hidden for 60 seconds
  messageTimeToLive: 3600, // Expires in 1 hour
});

// JSON message (must be string)
const task = { type: "process", data: { id: 123 } };
await queueClient.sendMessage(JSON.stringify(task));

Receive Messages

// Receive up to 32 messages (default: 1)
const response = await queueClient.receiveMessages({
  numberOfMessages: 10,
  visibilityTimeout: 30, // 30 seconds to process
});

for (const message of response.receivedMessageItems) {
  console.log("Message ID:", message.messageId);
  console.log("Content:", message.messageText);
  console.log("Dequeue Count:", message.dequeueCount);
  console.log("Pop Receipt:", message.popReceipt);
  
  // Process the message...
  
  // Delete after processing
  await queueClient.deleteMessage(message.messageId, message.popReceipt);
}

Peek Messages

Peek without removing from queue (no visibility timeout).

const response = await queueClient.peekMessages({
  numberOfMessages: 5,
});

for (const message of response.peekedMessageItems) {
  console.log("Message ID:", message.messageId);
  console.log("Content:", message.messageText);
  // Note: No popReceipt - cannot delete peeked messages
}

Update Message

Extend visibility timeout or update content.

// Receive a message
const response = await queueClient.receiveMessages();
const message = response.receivedMessageItems[0];

if (message) {
  // Update content and extend visibility
  const updateResponse = await queueClient.updateMessage(
    message.messageId,
    message.popReceipt,
    "Updated content",
    60 // New visibility timeout in seconds
  );
  
  // Use new popReceipt for subsequent operations
  console.log("New pop receipt:", updateResponse.popReceipt);
}

Delete Message

// After receiving
const response = await queueClient.receiveMessages();
const message = response.receivedMessageItems[0];

if (message) {
  await queueClient.deleteMessage(message.messageId, message.popReceipt);
}

Clear All Messages

await queueClient.clearMessages();

Message Processing Patterns

Basic Worker Pattern

async function processQueue(queueClient: QueueClient): Promise<void> {
  while (true) {
    const response = await queueClient.receiveMessages({
      numberOfMessages: 10,
      visibilityTimeout: 30,
    });

    if (response.receivedMessageItems.length === 0) {
      // No messages, wait before polling again
      await sleep(5000);
      continue;
    }

    for (const message of response.receivedMessageItems) {
      try {
        await processMessage(message.messageText);
        await queueClient.deleteMessage(message.messageId, message.popReceipt);
      } catch (error) {
        console.error(`Failed to process message ${message.messageId}:`, error);
        // Message will become visible again after timeout
      }
    }
  }
}

async function processMessage(content: string): Promise<void> {
  const task = JSON.parse(content);
  // Process task...
}

function sleep(ms: number): Promise<void> {
  return new Promise((resolve) => setTimeout(resolve, ms));
}

Poison Message Handling

const MAX_DEQUEUE_COUNT = 5;

async function processWithPoisonHandling(
  queueClient: QueueClient,
  poisonQueueClient: QueueClient
): Promise<void> {
  const response = await queueClient.receiveMessages({
    numberOfMessages: 10,
    visibilityTimeout: 30,
  });

  for (const message of response.receivedMessageItems) {
    if (message.dequeueCount > MAX_DEQUEUE_COUNT) {
      // Move to poison queue
      await poisonQueueClient.sendMessage(message.messageText);
      await queueClient.deleteMessage(message.messageId, message.popReceipt);
      console.log(`Moved message ${message.messageId} to poison queue`);
      continue;
    }

    try {
      await processMessage(message.messageText);
      await queueClient.deleteMessage(message.messageId, message.popReceipt);
    } catch (error) {
      console.error(`Processing failed (attempt ${message.dequeueCount}):`, error);
    }
  }
}

Batch Processing with Visibility Extension

async function processBatchWithExtension(queueClient: QueueClient): Promise<void> {
  const response = await queueClient.receiveMessages({
    numberOfMessages: 1,
    visibilityTimeout: 60,
  });

  const message = response.receivedMessageItems[0];
  if (!message) return;

  let popReceipt = message.popReceipt;

  // Start visibility extension timer
  const extensionInterval = setInterval(async () => {
    try {
      const updateResponse = await queueClient.updateMessage(
        message.messageId,
        popReceipt,
        message.messageText,
        60 // Extend by another 60 seconds
      );
      popReceipt = updateResponse.popReceipt;
    } catch (error) {
      console.error("Failed to extend visibility:", error);
    }
  }, 45000); // Extend every 45 seconds

  try {
    await longRunningProcess(message.messageText);
    await queueClient.deleteMessage(message.messageId, popReceipt);
  } finally {
    clearInterval(extensionInterval);
  }
}

Message Encoding

By default, messages are Base64 encoded. You can customize this:

import { QueueClient } from "@azure/storage-queue";

// Custom encoder/decoder for plain text
const queueClient = new QueueClient(
  `https://${accountName}.queue.core.windows.net/my-queue`,
  credential,
  {
    messageEncoding: "text", // "base64" (default) or "text"
  }
);

// Or with custom encoder
const customQueueClient = new QueueClient(
  `https://${accountName}.queue.core.windows.net/my-queue`,
  credential,
  {
    messageEncoding: {
      encode: (message: string) => Buffer.from(message).toString("base64"),
      decode: (message: string) => Buffer.from(message, "base64").toString(),
    },
  }
);

SAS Token Generation (Node.js only)

Generate Queue SAS

import {
  QueueSASPermissions,
  generateQueueSASQueryParameters,
  StorageSharedKeyCredential,
} from "@azure/storage-queue";

const sharedKeyCredential = new StorageSharedKeyCredential(accountName, accountKey);

const sasToken = generateQueueSASQueryParameters(
  {
    queueName: "my-queue",
    permissions: QueueSASPermissions.parse("raup"), // read, add, update, process
    startsOn: new Date(),
    expiresOn: new Date(Date.now() + 3600 * 1000), // 1 hour
  },
  sharedKeyCredential
).toString();

const sasUrl = `https://${accountName}.queue.core.windows.net/my-queue?${sasToken}`;

Generate Account SAS

import {
  AccountSASPermissions,
  AccountSASResourceTypes,
  AccountSASServices,
  generateAccountSASQueryParameters,
} from "@azure/storage-queue";

const sasToken = generateAccountSASQueryParameters(
  {
    services: AccountSASServices.parse("q").toString(), // queue
    resourceTypes: AccountSASResourceTypes.parse("sco").toString(),
    permissions: AccountSASPermissions.parse("rwdlacupi"),
    expiresOn: new Date(Date.now() + 24 * 3600 * 1000),
  },
  sharedKeyCredential
).toString();

Error Handling

import { RestError } from "@azure/storage-queue";

try {
  await queueClient.sendMessage("test");
} catch (error) {
  if (error instanceof RestError) {
    switch (error.statusCode) {
      case 404:
        console.log("Queue not found");
        break;
      case 400:
        console.log("Bad request - message too large or invalid");
        break;
      case 403:
        console.log("Access denied");
        break;
      case 409:
        console.log("Queue already exists or being deleted");
        break;
      default:
        console.error(`Storage error ${error.statusCode}: ${error.message}`);
    }
  }
  throw error;
}

TypeScript Types Reference

import {
  // Clients
  QueueServiceClient,
  QueueClient,

  // Authentication
  StorageSharedKeyCredential,
  AnonymousCredential,

  // SAS
  QueueSASPermissions,
  AccountSASPermissions,
  AccountSASServices,
  AccountSASResourceTypes,
  generateQueueSASQueryParameters,
  generateAccountSASQueryParameters,

  // Messages
  DequeuedMessageItem,
  PeekedMessageItem,
  QueueSendMessageResponse,
  QueueReceiveMessageResponse,
  QueueUpdateMessageResponse,

  // Queue
  QueueItem,
  QueueGetPropertiesResponse,

  // Errors
  RestError,
} from "@azure/storage-queue";

Message Limits

| Limit | Value |

|-------|-------|

| Max message size | 64 KB |

| Max visibility timeout | 7 days |

| Max time-to-live | 7 days (or -1 for infinite) |

| Max messages per receive | 32 |

| Default visibility timeout | 30 seconds |

Best Practices

Use DefaultAzureCredential for local development; use ManagedIdentityCredential or WorkloadIdentityCredential for production
Always delete after processing — Prevent duplicate processing
Handle poison messages — Move failed messages to a dead-letter queue
Use appropriate visibility timeout — Set based on expected processing time
Extend visibility for long tasks — Update message to prevent timeout
Use JSON for structured data — Serialize objects to JSON strings
Check dequeueCount — Detect repeatedly failing messages
Use batch receive — Receive multiple messages for efficiency

Platform Differences

| Feature | Node.js | Browser |

|---------|---------|---------|

| StorageSharedKeyCredential | ✅ | ❌ |

| SAS generation | ✅ | ❌ |

| DefaultAzureCredential | ✅ | ❌ |

| Anonymous/SAS access | ✅ | ✅ |

| All message operations | ✅ | ✅ |

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Copy the folder

Take microsoft/azure-storage-queue-ts from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

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Install what it needs

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