使用适用于 JavaScript (v2) 的开发工具包的 S3 Glacier 示例 - AWS SDK 代码示例
操作

文档 AWS SDK 示例 GitHub 存储库中还有更多 S AWS DK 示例。

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使用适用于 JavaScript (v2) 的开发工具包的 S3 Glacier 示例

以下代码示例演示如何将 AWS SDK for JavaScript (v2) 与 S3 Glacier 结合使用来执行操作和实现常见场景。

操作是大型程序的代码摘录，必须在上下文中运行。您可以通过操作了解如何调用单个服务函数，还可以通过函数相关场景和跨服务示例的上下文查看操作。

场景是指显示如何通过在同一服务中调用多个函数来完成特定任务的代码示例。

每个示例都包含一个指向的链接 GitHub，您可以在其中找到有关如何在上下文中设置和运行代码的说明。

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操作

以下代码示例显示如何创建 Amazon S3 文件库的分段上传。

适用于 JavaScript (v2) 的软件开发工具包
注意

还有更多相关信息 GitHub。在 AWS 代码示例存储库中查找完整示例，了解如何进行设置和运行。

创建 Buffer 对象的 1 兆字节区块的分段上传。

// Create a new service object and some supporting variables
var glacier = new AWS.Glacier({ apiVersion: "2012-06-01" }),
  vaultName = "YOUR_VAULT_NAME",
  buffer = new Buffer(2.5 * 1024 * 1024), // 2.5MB buffer
  partSize = 1024 * 1024, // 1MB chunks,
  numPartsLeft = Math.ceil(buffer.length / partSize),
  startTime = new Date(),
  params = { vaultName: vaultName, partSize: partSize.toString() };

// Compute the complete SHA-256 tree hash so we can pass it
// to completeMultipartUpload request at the end
var treeHash = glacier.computeChecksums(buffer).treeHash;

// Initiate the multipart upload
console.log("Initiating upload to", vaultName);
// Call Glacier to initiate the upload.
glacier.initiateMultipartUpload(params, function (mpErr, multipart) {
  if (mpErr) {
    console.log("Error!", mpErr.stack);
    return;
  }
  console.log("Got upload ID", multipart.uploadId);

  // Grab each partSize chunk and upload it as a part
  for (var i = 0; i < buffer.length; i += partSize) {
    var end = Math.min(i + partSize, buffer.length),
      partParams = {
        vaultName: vaultName,
        uploadId: multipart.uploadId,
        range: "bytes " + i + "-" + (end - 1) + "/*",
        body: buffer.slice(i, end),
      };

    // Send a single part
    console.log("Uploading part", i, "=", partParams.range);
    glacier.uploadMultipartPart(partParams, function (multiErr, mData) {
      if (multiErr) return;
      console.log("Completed part", this.request.params.range);
      if (--numPartsLeft > 0) return; // complete only when all parts uploaded

      var doneParams = {
        vaultName: vaultName,
        uploadId: multipart.uploadId,
        archiveSize: buffer.length.toString(),
        checksum: treeHash, // the computed tree hash
      };

      console.log("Completing upload...");
      glacier.completeMultipartUpload(doneParams, function (err, data) {
        if (err) {
          console.log("An error occurred while uploading the archive");
          console.log(err);
        } else {
          var delta = (new Date() - startTime) / 1000;
          console.log("Completed upload in", delta, "seconds");
          console.log("Archive ID:", data.archiveId);
          console.log("Checksum:  ", data.checksum);
        }
      });
    });
  }
});

以下代码示例演示了如何创建 Amazon S3 Glacier 文件库。

适用于 JavaScript (v3) 的软件开发工具包
注意

还有更多相关信息 GitHub。查找完整示例，了解如何在 AWS 代码示例存储库中进行设置和运行。

创建客户端。

const { GlacierClient } = require("@aws-sdk/client-glacier");
// Set the AWS Region.
const REGION = "REGION";
//Set the Redshift Service Object
const glacierClient = new GlacierClient({ region: REGION });
export { glacierClient };

创建文件库。

// Load the SDK for JavaScript
import { CreateVaultCommand } from "@aws-sdk/client-glacier";
import { glacierClient } from "./libs/glacierClient.js";

// Set the parameters
const vaultname = "VAULT_NAME"; // VAULT_NAME
const params = { vaultName: vaultname };

const run = async () => {
  try {
    const data = await glacierClient.send(new CreateVaultCommand(params));
    console.log("Success, vault created!");
    return data; // For unit tests.
  } catch (err) {
    console.log("Error");
  }
};
run();
适用于 JavaScript (v2) 的软件开发工具包
注意

还有更多相关信息 GitHub。在 AWS 代码示例存储库中查找完整示例，了解如何进行设置和运行。

// Load the SDK for JavaScript
var AWS = require("aws-sdk");
// Set the region
AWS.config.update({ region: "REGION" });

// Create a new service object
var glacier = new AWS.Glacier({ apiVersion: "2012-06-01" });
// Call Glacier to create the vault
glacier.createVault({ vaultName: "YOUR_VAULT_NAME" }, function (err) {
  if (!err) {
    console.log("Created vault!");
  }
});

以下代码示例演示了如何将存档上传到 Amazon S3 Glacier 文件库。

适用于 JavaScript (v3) 的软件开发工具包
注意

还有更多相关信息 GitHub。查找完整示例，了解如何在 AWS 代码示例存储库中进行设置和运行。

创建客户端。

const { GlacierClient } = require("@aws-sdk/client-glacier");
// Set the AWS Region.
const REGION = "REGION";
//Set the Redshift Service Object
const glacierClient = new GlacierClient({ region: REGION });
export { glacierClient };

上传存档。

// Load the SDK for JavaScript
import { UploadArchiveCommand } from "@aws-sdk/client-glacier";
import { glacierClient } from "./libs/glacierClient.js";

// Set the parameters
const vaultname = "VAULT_NAME"; // VAULT_NAME

// Create a new service object and buffer
const buffer = new Buffer.alloc(2.5 * 1024 * 1024); // 2.5MB buffer
const params = { vaultName: vaultname, body: buffer };

const run = async () => {
  try {
    const data = await glacierClient.send(new UploadArchiveCommand(params));
    console.log("Archive ID", data.archiveId);
    return data; // For unit tests.
  } catch (err) {
    console.log("Error uploading archive!", err);
  }
};
run();
适用于 JavaScript (v2) 的软件开发工具包
注意

还有更多相关信息 GitHub。在 AWS 代码示例存储库中查找完整示例，了解如何进行设置和运行。

// Load the SDK for JavaScript
var AWS = require("aws-sdk");
// Set the region
AWS.config.update({ region: "REGION" });

// Create a new service object and buffer
var glacier = new AWS.Glacier({ apiVersion: "2012-06-01" });
buffer = Buffer.alloc(2.5 * 1024 * 1024); // 2.5MB buffer

var params = { vaultName: "YOUR_VAULT_NAME", body: buffer };
// Call Glacier to upload the archive.
glacier.uploadArchive(params, function (err, data) {
  if (err) {
    console.log("Error uploading archive!", err);
  } else {
    console.log("Archive ID", data.archiveId);
  }
});