> ## Documentation Index
> Fetch the complete documentation index at: https://docs.magicblock.gg/llms.txt
> Use this file to discover all available pages before exploring further.

# 使用 session key manager

> 一个自定义 React hook，用于管理会话令牌的创建与撤销，并以安全且易用的方式提供签名和发送交易所需的核心方法

`useSessionKeyManager` 是一个自定义 hook，接收 `AnchorWallet`、`Connection` 和 `Cluster` 作为参数，并返回一个 `SessionWalletInterface`。这个 hook 负责管理 session keys、tokens，并提供签名和发送交易所需的方法。

`SessionWalletInterface` 包含以下属性和方法：

```typescript theme={null}
interface SessionWalletInterface {
  publicKey: PublicKey | null; // Public key associated with the session wallet
  ownerPublicKey: PublicKey | null; // The Publickey of the session token authority(The creator of the session token)
  isLoading: boolean; // Indicates whether the session wallet is loading
  error: string | null; // An error message, if any
  sessionToken: string | null; // Session token for the current session
  signTransaction:
    | (<T extends Transaction>(
        transaction: T,
        connection?: Connection,
        sendOptions?: SendTransactionOptions
      ) => Promise<T>)
    | undefined; // Sign a single transaction
  signAllTransactions:
    | (<T extends Transaction>(
        transactions: T[],
        connection?: Connection,
        sendOptions?: SendTransactionOptions
      ) => Promise<T[]>)
    | undefined; // Sign multiple transactions
  signMessage: ((message: Uint8Array) => Promise<Uint8Array>) | undefined; // Sign a message
  sendTransaction:
    | (<T extends Transaction>(
        transaction: T,
        connection?: Connection,
        options?: SendTransactionOptions
      ) => Promise<string>)
    | undefined; // Send a signed transaction
  signAndSendTransaction:
    | (<T extends Transaction>(
        transactions: T | T[],
        connection?: Connection,
        options?: SendTransactionOptions
      ) => Promise<string[]>)
    | undefined; // Sign and send transactions
  createSession: (
    targetProgram: PublicKey, // Target Solana program
    topUpLamports?: number, // Top up session wallet with lamports or not
    validUntil?: number, // Duration of session token before expiration
    sessionCreatedCallback?: (sessionInfo: {
      sessionToken: string;
      publicKey: string;
    }) => void
  ) => Promise<SessionWalletInterface | undefined>; // Create a new session
  revokeSession: () => Promise<void>; // Revoke the current session
  getSessionToken: () => Promise<string | null>; // Retrieve the current session token
}
```

下面是使用 `useSessionKeyManager` 的示例：

```typescript theme={null}
import { useAnchorWallet, useConnection } from '@solana/wallet-adapter-react';
import { useSessionKeyManager } from '@gumhq/react-sdk';

function YourComponent() {
  const wallet = useAnchorWallet();
  const connection = useConnection();
  const cluster = "devnet"; // or "mainnet-beta", "testnet", "localnet"

  const sessionWallet = useSessionKeyManager(wallet, connection, cluster);

  // 在这里访问 session wallet 的属性和方法
  // 例如：sessionWallet.publicKey
  // 例如：sessionWallet.createSession

  return (
    // Your component JSX
  );
}
```

如果你想在多个组件之间复用 Session Key Manager，可以在应用中按照下一节的方式设置 Provider 组件和 Context。