Listing Objects in a Bucket (SDK for Node.js)

// Import the OBS library.
// Use npm to install the client.
const ObsClient = require("esdk-obs-nodejs");
// Use the source code to install the client.
// var ObsClient = require('./lib/obs');

// Create an instance of ObsClient.
const obsClient = new ObsClient({
  // Obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways. Using hard coding may result in leakage.
  // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // (Optional) If you use a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage. You can obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways.
  // security_token: process.env.SECURITY_TOKEN,
  // Enter the endpoint corresponding to the region where the bucket is located. CN-Hong Kong is used here in this example. Replace it with the one currently in use.
  server: "https://obs.ap-southeast-1.myhuaweicloud.com"
});

async function listObjects() {
  try {
    const params = {
      // Specify the bucket name.
      Bucket: "examplebucket",
    };
    // List objects in a bucket.
    const result = await obsClient.listObjects(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("List objects under the bucket(%s) successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      for (let j = 0; j < result.InterfaceResult.Contents.length; j++) {
        const val = result.InterfaceResult.Contents[j];
        console.log('Content[%d]-OwnerId:%s, ETag:%s, Key:%s, LastModified:%s, Size:%d',
          j, val.Owner.ID, val.ETag, val.Key, val.LastModified, val.Size);
      };
      return;
    };
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};

listObjects();

// Import the OBS library.
// Use npm to install the client.
const ObsClient = require("esdk-obs-nodejs");
// Use the source code to install the client.
// var ObsClient = require('./lib/obs');

// Create an instance of ObsClient.
const obsClient = new ObsClient({
  // Obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways. Using hard coding may result in leakage.
    access_key_id: process.env.ACCESS_KEY_ID,
  // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // (Optional) If you use a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage. You can obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways.
  // security_token: process.env.SECURITY_TOKEN,
  // Enter the endpoint corresponding to the region where the bucket is located. CN-Hong Kong is used here in this example. Replace it with the one currently in use.
  server: "https://obs.ap-southeast-1.myhuaweicloud.com"
});

async function listObjects() {
  try {
    const params = {
      // Specify the bucket name.
      Bucket: "examplebucket",
      // Specify the maximum number of objects to be returned in alphabetic order. The default value is 1000. 100 is used in this example.
      MaxKeys: 100,
    };
    // List objects in a bucket.
    const result = await obsClient.listObjects(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("List objects under the bucket(%s) successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      for (let j = 0; j < result.InterfaceResult.Contents.length; j++) {
        const val = result.InterfaceResult.Contents[j];
        console.log('Content[%d]-OwnerId:%s, ETag:%s, Key:%s, LastModified:%s, Size:%d',
          j, val.Owner.ID, val.ETag, val.Key, val.LastModified, val.Size);
      };
      return;
    };
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};

listObjects();

// Import the OBS library.
// Use npm to install the client.
const ObsClient = require("esdk-obs-nodejs");
// Use the source code to install the client.
// var ObsClient = require('./lib/obs');
// Create an instance of ObsClient.
const obsClient = new ObsClient({
  // Obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways. Using hard coding may result in leakage.
  // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // (Optional) If you use a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage. You can obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways.
  // security_token: process.env.SECURITY_TOKEN,
  // Enter the endpoint corresponding to the region where the bucket is located. CN-Hong Kong is used here in this example. Replace it with the one currently in use.
  server: "https://obs.ap-southeast-1.myhuaweicloud.com"
});

async function listObjects() {
  try {
    const params = {
      // Specify the bucket name.
      Bucket: "examplebucket",
      // Specify an object prefix (test/ in this example). Objects whose names contain the specified prefix will be listed.
      Prefix: "test/",
      // Specify the maximum number of objects to be returned in alphabetic order. The default value is 1000. 100 is used in this example.
      MaxKeys: 100,
    };
    
    // List objects in a bucket.
    const result = await obsClient.listObjects(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("List objects under the bucket(%s) successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      for (let j = 0; j < result.InterfaceResult.Contents.length; j++) {
        const val = result.InterfaceResult.Contents[j];
        console.log('Content[%d]-OwnerId:%s, ETag:%s, Key:%s, LastModified:%s, Size:%d',
          j, val.Owner.ID, val.ETag, val.Key, val.LastModified, val.Size);
      };
      return;
    };
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};

listObjects();

// Import the OBS library.
// Use npm to install the client.
const ObsClient = require("esdk-obs-nodejs");
// Use the source code to install the client.
// var ObsClient = require('./lib/obs');

// Create an instance of ObsClient.
const obsClient = new ObsClient({
  // Obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways. Using hard coding may result in leakage.
  // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // (Optional) If you use a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage. You can obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways.
  // security_token: process.env.SECURITY_TOKEN,
  // Enter the endpoint corresponding to the region where the bucket is located. CN-Hong Kong is used here in this example. Replace it with the one currently in use.
  server: "https://obs.ap-southeast-1.myhuaweicloud.com"
});

async function listObjects() {
  try {
    const params = {
      // Specify the bucket name.
      Bucket: "examplebucket",
      // Specify an object prefix (test/ in this example). Objects whose names contain the specified prefix will be listed.
      Prefix: "test/",
      // Specify the maximum number of objects to be returned in alphabetic order. The default value is 1000. 100 is used in this example.
      MaxKeys: 100,
      // Specify the position (test/test2 in this example) where the object listing starts.
      Marker: "test/test2",
    };
    // List objects in a bucket.
    const result = await obsClient.listObjects(params);
    if (result.CommonMsg.Status <= 300) {
      console.log("List objects under the bucket(%s) successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      for (let j = 0; j < result.InterfaceResult.Contents.length; j++) {
        const val = result.InterfaceResult.Contents[j];
        console.log('Content[%d]-OwnerId:%s, ETag:%s, Key:%s, LastModified:%s, Size:%d',
          j, val.Owner.ID, val.ETag, val.Key, val.LastModified, val.Size);
      };
      return;
    };
    console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
    console.log("Status: %d", result.CommonMsg.Status);
    console.log("Code: %s", result.CommonMsg.Code);
    console.log("Message: %s", result.CommonMsg.Message);
    console.log("RequestId: %s", result.CommonMsg.RequestId);
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};

listObjects();

// Import the OBS library.
// Use npm to install the client.
const ObsClient = require("esdk-obs-nodejs");
// Use the source code to install the client.
// var ObsClient = require('./lib/obs');

// Create an instance of ObsClient.
const obsClient = new ObsClient({
  // Obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways. Using hard coding may result in leakage.
  // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // (Optional) If you use a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage. You can obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways.
  // security_token: process.env.SECURITY_TOKEN,
  // Enter the endpoint corresponding to the region where the bucket is located. CN-Hong Kong is used here in this example. Replace it with the one currently in use.
  server: "https://obs.ap-southeast-1.myhuaweicloud.com"
});

async function listObjects() {
  try {
    const params = {
      // Specify the bucket name.
      Bucket: "examplebucket",
      // Specify an encoding type. url is used in this example. If the objects to list contain special characters, this parameter must be passed.
      EncodingType: "url",
    };
    while (true) {
      // List object versions in the bucket.
      const result = await obsClient.listObjects(params);
      if (result.CommonMsg.Status > 300) {
        console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
        console.log("Status: %d", result.CommonMsg.Status);
        console.log("Code: %s", result.CommonMsg.Code);
        console.log("Message: %s", result.CommonMsg.Message);
        console.log("RequestId: %s", result.CommonMsg.RequestId);
        return;
      };
      console.log("List objects under the bucket(%s) successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      for (let j = 0; j < result.InterfaceResult.Contents.length; j++) {
        const val = result.InterfaceResult.Contents[j];
        console.log('Content[%d]-OwnerId:%s, ETag:%s, Key:%s, LastModified:%s, Size:%d',
          j, val.Owner.ID, val.ETag, val.Key, val.LastModified, val.Size);
      };
      if (result.InterfaceResult.IsTruncated === "true") {
        params.KeyMarker = result.InterfaceResult.NextKeyMarker;
      } else {
        break;
      };
    };
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};

listObjects();

// Import the OBS library.
// Use npm to install the client.
const ObsClient = require("esdk-obs-nodejs");
// Use the source code to install the client.
// var ObsClient = require('./lib/obs');

// Create an instance of ObsClient.
const obsClient = new ObsClient({
  // Obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways. Using hard coding may result in leakage.
  // Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
  access_key_id: process.env.ACCESS_KEY_ID,
  secret_access_key: process.env.SECRET_ACCESS_KEY,
  // (Optional) If you use a temporary AK/SK pair and a security token to access OBS, you are advised not to use hard coding, which may result in information leakage. You can obtain an AK/SK pair using environment variables or import an AK/SK pair in other ways.
  // security_token: process.env.SECURITY_TOKEN,
  // Enter the endpoint corresponding to the region where the bucket is located. CN-Hong Kong is used here in this example. Replace it with the one currently in use.
  server: "https://obs.ap-southeast-1.myhuaweicloud.com"
});

async function listObjects() {
  try {
    const params = {
      // Specify the bucket name.
      Bucket: "examplebucket",
      // Specify an object prefix (test/ in this example). Objects whose names contain the specified prefix will be listed.
      Prefix: "test/",
      // Specify an encoding type. url is used in this example. If the objects to list contain special characters, this parameter must be passed.
      EncodingType: "url",
    };
    let count = 1
    while (true) {
      // List object versions in the bucket.
      const result = await obsClient.listObjects(params);
      if (result.CommonMsg.Status > 300) {
        console.log("An ObsError was found, which means your request sent to OBS was rejected with an error response.");
        console.log("Status: %d", result.CommonMsg.Status);
        console.log("Code: %s", result.CommonMsg.Code);
        console.log("Message: %s", result.CommonMsg.Message);
        console.log("RequestId: %s", result.CommonMsg.RequestId);
        return;
      };
      console.log("List objects under the bucket(%s) successful!", params.Bucket);
      console.log("RequestId: %s", result.CommonMsg.RequestId);
      for (let j = 0; j < result.InterfaceResult.Contents.length; j++) {
        const val = result.InterfaceResult.Contents[j];
        console.log('Content[%d]-OwnerId:%s, ETag:%s, Key:%s, LastModified:%s, Size:%d',
          count++, val.Owner.ID, val.ETag, val.Key, val.LastModified, val.Size);
      };
      if (result.InterfaceResult.IsTruncated === "true") {
        params.Marker = result.InterfaceResult.NextMarker;
      } else {
        break;
      };
    };
  } catch (error) {
    console.log("An Exception was found, which means the client encountered an internal problem when attempting to communicate with OBS, for example, the client was unable to access the network.");
    console.log(error);
  };
};

listObjects();