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Luis Fernando Molina committed 2018-02-07 21:05:26 +01:00
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//
// Copyright (c) Microsoft and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//
/**
* 1. Demonstrates how to upload all files from a given directory in parallel
*
* 2. Demonstrates how to download all files from a given blob container to a given destination directory.
*
* 3. Demonstrate making requests using AccessConditions.
*/
var fs = require('fs');
var azure;
if (fs.existsSync('absolute path to azure-storage.js')) {
azure = require('absolute path to azure-storage');
} else {
azure = require('azure-storage');
}
var container = 'updownsample3';
var blob = 'updownsample';
var blobAccess = 'updownaccesssample';
var blobService = azure.createBlobService()
.withFilter(new azure.ExponentialRetryPolicyFilter());
// optionally set a proxy
/*var proxy = {
protocol: 'http:',
host: '127.0.0.1',
port: 8888
};
blobService.setProxy(proxy);
*/
function uploadSample() {
var processArguments = process.argv;
if (processArguments.length !== 4) {
console.log('Incorrect number of arguments. Should be: srcPath destPath');
process.exit(1);
}
var srcPath = processArguments[2];
var destPath = processArguments[3];
console.log('Starting blobuploaddownloadsample.');
// Create the container
createContainer(container, function () {
// Demonstrates how to upload all files from a given directoy
uploadBlobs(srcPath, container, function () {
// Demonstrates how to download all files from a given
// blob container to a given destination directory.
downloadBlobs(container, destPath, function () {
// Demonstrate making requests using AccessConditions.
useAccessCondition(container, function () {
// Delete the container
deleteContainer(container, function () {
console.log('Ending blobuploaddownloadsample.');
});
});
});
});
});
}
function createContainer (container, callback) {
// Create the container.
blobService.createContainerIfNotExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Created the container ' + container);
callback();
}
});
}
function uploadBlobs(sourceDirectoryPath, containerName, callback) {
console.log('Entering uploadBlobs.');
// validate directory is valid.
if (!fs.existsSync(sourceDirectoryPath)) {
console.log(sourceDirectoryPath + ' is an invalid directory path.');
} else {
// Search the directory and generate a list of files to upload.
walk(sourceDirectoryPath, function (error, files) {
if (error) {
console.log(error);
} else {
var finished = 0;
// generate and schedule an upload for each file
files.forEach(function (file) {
var blobName = file.replace(/^.*[\\\/]/, '');
blobService.createBlockBlobFromLocalFile(containerName, blobName, file, function (error) {
finished++;
if (error) {
console.log(error);
} else {
console.log(' Blob ' + blobName + ' upload finished.');
if (finished === files.length) {
// Wait until all workers complete and the blobs are uploaded to the server.
console.log('All files uploaded');
callback();
}
}
});
});
}
});
}
}
function downloadBlobs(containerName, destinationDirectoryPath, callback) {
console.log('Entering downloadBlobs.');
// Validate directory
if (!fs.existsSync(destinationDirectoryPath)) {
console.log(destinationDirectoryPath + ' does not exist. Attempting to create this directory...');
fs.mkdirSync(destinationDirectoryPath);
console.log(destinationDirectoryPath + ' created.');
}
// NOTE: does not handle pagination.
blobService.listBlobsSegmented(containerName, null, function (error, result) {
if (error) {
console.log(error);
} else {
var blobs = result.entries;
var blobsDownloaded = 0;
blobs.forEach(function (blob) {
blobService.getBlobToLocalFile(containerName, blob.name, destinationDirectoryPath + '/' + blob.name, function (error2) {
blobsDownloaded++;
if (error2) {
console.log(error2);
} else {
console.log(' Blob ' + blob.name + ' download finished.');
if (blobsDownloaded === blobs.length) {
// Wait until all workers complete and the blobs are downloaded
console.log('All files downloaded');
callback();
}
}
});
});
}
});
}
function useAccessCondition(containerName, callback) {
console.log('Entering useAccessCondition.');
// Create a blob.
blobService.createBlockBlobFromText(containerName, blobAccess, 'hello', function (error, blobInformation) {
if (error) {
console.log(error);
} else {
console.log(' Created the blob ' + blobInformation.name);
console.log(' Blob Etag is: ' + blobInformation.etag);
// Use the If-not-match ETag condition to access the blob. By
// using the IfNoneMatch condition we are asserting that the blob needs
// to have been modified in order to complete the request. In this
// sample no other client is accessing the blob, so this will fail as
// expected.
var options = { accessConditions: { EtagNonMatch: blobInformation.etag} };
blobService.createBlockBlobFromText(containerName, blobInformation.name, 'new hello', options, function (error2) {
if (error2 && error2.statusCode === 412 && error2.code === 'ConditionNotMet') {
console.log('Attempted to recreate the blob with the if-none-match access condition and got the expected exception.');
callback();
} else {
console.log(' Blob was incorrectly updated');
if (error2) {
console.log(error2);
}
}
});
}
});
}
function deleteContainer (container, callback) {
// Delete the container.
blobService.deleteContainerIfExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Deleted the container ' + container);
callback();
}
});
}
// Utility function
var walk = function (dir, done) {
var results = [];
fs.readdir(dir, function (err, list) {
if (err) return done(err);
var i = 0;
(function next() {
var file = list[i++];
if (!file) return done(null, results);
file = dir + '/' + file;
fs.stat(file, function (err2, stat) {
if (stat && stat.isDirectory()) {
walk(file, function (err3, res) {
results = results.concat(res);
next();
});
} else {
results.push(file);
next();
}
});
})();
});
};
uploadSample();
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//
// Copyright (c) Microsoft and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//
/**
* This sample demonstrates how to handle continuation tokens and virtual "pages" of results when performing a listing
* operation on the blob service.
*
* This sample peformsthe following steps:
*
* 0. Create container.
*
* 1. Create 50 blobs.
*
* 2. List the first 10(page size) blobs.
*
* 3. Check whether there are more results.
*
* 4. Repeat 2 and 3 until complete.
*
*/
var fs = require('fs');
var azure;
if (fs.existsSync('absolute path to azure-storage.js')) {
azure = require('absolute path to azure-storage');
} else {
azure = require('azure-storage');
}
var container = 'paginationsample';
var blob = 'contsample';
var blobs = [];
var blobService = azure.createBlobService()
.withFilter(new azure.ExponentialRetryPolicyFilter());
// optionally set a proxy
/*var proxy = {
protocol: 'http:',
host: '127.0.0.1',
port: 8888
};
blobService.setProxy(proxy);
*/
var totalBlobsCount;
var pageSize;
function continuationSample () {
var processArguments = process.argv;
if (processArguments.length !== 4) {
console.log('Incorrect number of arguments. Should be: numBlobs pageSize [deleteContainer]\nTry: 51 10');
process.exit(1);
}
totalBlobsCount = parseInt(processArguments[2], 10);
pageSize = parseInt(processArguments[3], 10);
console.log('Starting continuationSample.');
// Create the container
createContainer(container, function () {
console.log('Entering createBlobs.');
// Upload blobs from text.
createBlobs(totalBlobsCount, function () {
var options = {
maxResults: pageSize,
include: 'metadata',
locationMode: azure.StorageUtilities.LocationMode.PRIMARY_THEN_SECONDARY
};
console.log('Entering listBlobs.');
// List blobs using continuation tokens.
listBlobs(options, null, function () {
// Delete the container
deleteContainer(container, function () {
console.log('Ending continuationSample.');
});
});
});
});
}
function createContainer (container, callback) {
// Create the container.
blobService.createContainerIfNotExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Created the container ' + container);
callback();
}
});
}
function createBlobs(currentBlobsCount, callback) {
// Upload totalBlobsCount blobs to the container.
var options = {};
options.metadata = {'hello':'world'};
blobService.createBlockBlobFromText(container, blob + currentBlobsCount, 'blob' + currentBlobsCount, options, function (error) {
if (error) {
console.log(error);
} else if (currentBlobsCount > 1) {
createBlobs(--currentBlobsCount, callback);
} else {
console.log(' Created ' + totalBlobsCount + ' blobs.');
callback();
}
});
}
function listBlobs (options, token, callback) {
blobService.listBlobsSegmented(container, token, options, function(error, result) {
blobs.push.apply(blobs, result.entries);
var token = result.continuationToken;
if(token) {
console.log(' Received a page of results. There are ' + result.entries.length + ' blobs on this page.');
listBlobs(options, token, callback);
}
else {
console.log(' Completed listing. There are ' + blobs.length + ' blobs');
callback();
}
});
}
function deleteContainer (container, callback) {
// Delete the container.
blobService.deleteContainerIfExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Deleted the container ' + container);
callback();
}
});
}
continuationSample();
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//
// Copyright (c) Microsoft and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//
/**
* Demonstrates how to define sendingrequest and receivedresponse event handlers.
*/
var fs = require('fs');
var azure;
if (fs.existsSync('absolute path to azure-storage.js')) {
azure = require('absolute path to azure-storage');
} else {
azure = require('azure-storage');
}
var container = 'sendingrequestevent3';
// The service object which will define the event handlers
var blobService = azure.createBlobService();
// optionally set a proxy
/*var proxy = {
protocol: 'http:',
host: '127.0.0.1',
port: 8888
};
blobService.setProxy(proxy);
blobService2.setProxy(proxy);
*/
// the sending request event handler
var sendingRequestHandler = function (webresource) {
webresource.withHeader('x-ms-custom-header', 'value');
console.log(' sending request event handler called');
};
// the response received event handler
var responseReceivedHandler = function (response) {
console.log(' received response event handler called');
};
function eventHandlersSample () {
console.log('Starting eventHandlersSample.');
// set the event handlers
blobService.on('sendingRequestEvent', sendingRequestHandler);
blobService.on('receivedResponseEvent', responseReceivedHandler);
// create and delete a container with these handlers
createContainer(container, function () {
// Delete the container
deleteContainer(container, function () {
console.log('Ending eventHandlersSample.');
});
});
}
function createContainer (container, callback) {
// Create the container.
blobService.createContainer(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Created the container ' + container);
callback();
}
});
}
function deleteContainer (container, callback) {
// Delete the container.
blobService.deleteContainer(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Deleted the container ' + container);
callback();
}
});
}
eventHandlersSample();
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//
// Copyright (c) Microsoft and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//
/**
* Demonstrates how to use pre-written retry policies and how to define a customized retry policy.
*
* In the sample for pre-written retry policies, we simply show how to use pre-written retry policies.
*
* In the sample for customized retry policy, we define a customized retry policy,
* which retries on the "The specified container is being deleted" exception besides the server exceptions.
*
* Note that only in the cloud(not the storage emulator), "The specified container is being deleted" exceptions will be
* sent if users immediately recreate a container after delete it.
*/
var fs = require('fs');
if (!fs.existsSync) {
fs.existsSync = require('path').existsSync;
}
var azure;
if (fs.existsSync('absolute path to azure-storage.js')) {
azure = require('absolute path to azure-storage');
} else {
azure = require('azure-storage');
}
var RetryPolicyFilter = azure.RetryPolicyFilter;
var LocationMode = azure.StorageUtilities.LocationMode;
var container = 'customretrypolicysample';
var blobService;
/**
* Demonstrate how to use pre-written retry policies.
* By default, no retry will be performed with service instances newly created.
* Several pre-written retry policies are available with modifiable settings,
* and can be used through associating filter.
*/
function setRetries() {
console.log('Starting Sample 1 - setRetries.');
// By default, no retry will be performed with all kinds of services created
// by Azure storage client library for Node.js.
var blobServiceWithoutRetry = azure.createBlobService();
console.log('BlobService instance created, no retry will be performed by default.');
// There are two pre-written retry policies: ExponentialRetryPolicyFilter
// and LinearRetryPolicyFilter can be used with modifiable settings.
// Use an exponential retry with customized settings.
var fileServiceWithExponentialRetry = azure.createFileService().withFilter(
new azure.ExponentialRetryPolicyFilter(
3, // retryCount is set to 3 times.
4000, // retryInterval is set to 4 seconds.
3000, // minRetryInterval is set to 3 seconds.
120000 // maxRetryInterval is set to 120 seconds.
));
console.log('FileService instance created and associated with ExponentialRetryPolicyFilter.');
console.log(' Retries will be performed with exponential back-off.');
// Use a default linear retry policy.
var tableServiceWithLinearRetry = azure.createTableService().withFilter(
new azure.LinearRetryPolicyFilter()); // By default, retryCount is set to 3 times and retryInterval is set to 30 seconds.
console.log('TableService instance created and associated with LinearRetryPolicyFilter,');
console.log(' Retries will be performed with linear back-off.');
console.log('Ending Sample 1 - setRetries.');
}
/**
* Demonstrate how to use custom retry policy.
* Any custom retry logic may be used by simply creating and setting RetryPolicyFilter instance.
*/
function setCustomRetryPolicy() {
console.log('Starting Sample 2 - setCustomRetryPolicy.');
// Step 1 : Set the retry policy to customized retry policy which will
// not retry on any failing status code other than the excepted one.
var retryOnContainerBeingDeleted = new RetryPolicyFilter();
retryOnContainerBeingDeleted.retryCount = 5;
retryOnContainerBeingDeleted.retryInterval = 5000;
retryOnContainerBeingDeleted.shouldRetry = function (statusCode, retryData) {
console.log(' Made the request at ' + new Date().toUTCString() + ', received StatusCode: ' + statusCode);
var retryInfo = {};
// retries on any bad status code other than 409
if (statusCode >= 300 && statusCode !== 409 && statusCode !== 500) {
retryInfo.retryable = false;
} else {
var currentCount = (retryData && retryData.retryCount) ? retryData.retryCount : 0;
retryInfo = {
retryInterval: this.retryInterval + 2000 * currentCount,
retryable: currentCount < this.retryCount
};
}
return retryInfo;
};
blobService = azure.createBlobService().withFilter(retryOnContainerBeingDeleted);
// optionally set a proxy
/*var proxy = {
protocol: 'http:',
host: '127.0.0.1',
port: 8888
};
blobService.setProxy(proxy);*/
// Step 2: Create the container
createContainer(function () {
// Step 3: Fetch attributes from the container using LocationMode.SECONDARY_THEN_PRIMARY
fetchAttributesContainer(function () {
// Step 4: Lease the container
leaseContainer(function () {
// Step 5: Lease the container again, retrying until it succeeds
leaseContainer(function () {
// Step 6: Delete the container
deleteContainer(function () {
console.log('Ending Sample 2 - setCustomRetryPolicy.');
});
});
});
});
});
}
function createContainer(callback) {
console.log('Entering createContainer.');
// Create the container.
blobService.createContainerIfNotExists(container, function (error, containerResult) {
if (error) {
console.log(error);
} else {
console.log(' Container info ');
console.log(containerResult);
console.log('Created the container ' + container);
callback();
}
});
}
function fetchAttributesContainer(callback) {
console.log('Entering fetchAttributesContainer.');
var options = {
locationMode: LocationMode.SECONDARY_THEN_PRIMARY
};
// Get the properties of the container.
blobService.getContainerProperties(container, options, function (error) {
if (error) {
console.log(error);
} else {
console.log('Downloaded container properties from ' + container);
callback();
}
});
}
function leaseContainer(callback) {
console.log('Entering leaseContainer.');
// Try to acquire the lease.
blobService.acquireLease(container, null, {leaseDuration: 15}, function (error, lease) {
if (error) {
console.log(error);
}
else {
console.log('Acquired lease from ' + container + ' with leaseid' + lease.id);
callback();
}
});
}
function deleteContainer(callback) {
console.log('Entering deleteContainer.');
// Break the lease.
blobService.breakLease(container, null, {leaseBreakPeriod: 0}, function (error) {
if (error) {
console.log(error);
} else {
console.log(' Broke the lease on the container ' + container);
}
// Delete the container.
blobService.deleteContainer(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Deleted the container ' + container);
callback();
}
});
});
}
function runAllSamples() {
console.log("Starting retrypolicySample.");
setRetries();
setCustomRetryPolicy();
console.log("Ending retrypolicySample.");
}
runAllSamples();
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//
// Copyright (c) Microsoft and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//
/**
* In this sample, we demonstrate how to generate and use the blob level shared access signature and the container level
* shared access signature.
*
* In the blob level shared access signature sample, there are the following steps:
*
* 1. Create a container and a blob.
*
* 2. Generate a shared access signature for the blob and download the blob using it.
*
* 3. Upload a "ReadWrite" policy and a "Read" permission to the container.
*
* 4. Generate a shared access signature for the blob using the policy id and download the blob using it.
*/
var fs = require('fs');
var assert = require('assert');
var azure;
if (fs.existsSync('../../lib/azure-storage.js')) {
azure = require('../../lib/azure-storage');
} else {
azure = require('azure-storage');
}
var BlobUtilities = azure.BlobUtilities;
var container = 'container-sassample';
var blob = 'blob-sassample';
var blobService = azure.createBlobService();
// optionally set a proxy
/*var proxy = {
protocol: 'http:',
host: '127.0.0.1',
port: 8888
};
blobService.setProxy(proxy);
blobService2.setProxy(proxy);
*/
function sasSample () {
console.log('Starting sasSample.');
// Create the container.
createContainer(function () {
// Create a blob.
createBlob( function () {
// Create a shared access signature and use it to download the blob just created.
downloadBlobUsingSharedAccessSignature(function () {
// Add Shared Access policies to the container
createPolicies(function () {
// Use the read policy just created
usePermissions(function () {
// Delete the container
deleteContainer(function () {
console.log('Ending sasSample.');
});
});
});
});
});
});
}
function createContainer (callback) {
// Create the container.
blobService.createContainerIfNotExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Created the container ' + container);
callback();
}
});
}
function createBlob (callback) {
// Create the blob
blobService.createBlockBlobFromText(container, blob, 'test blob', function (error) {
if (error) {
console.log(error);
}
else {
console.log('Created the blob ' + container);
callback();
}
});
}
function downloadBlobUsingSharedAccessSignature (callback) {
var startDate = new Date();
var expiryDate = new Date(startDate);
expiryDate.setMinutes(startDate.getMinutes() + 5);
var sharedAccessPolicy = {
AccessPolicy: {
Permissions: BlobUtilities.SharedAccessPermissions.READ,
Start: startDate,
Expiry: expiryDate
}
};
var sharedAccessSignatureToken = blobService.generateSharedAccessSignature(container, blob, sharedAccessPolicy);
var sharedBlobService = azure.createBlobServiceWithSas(blobService.host, sharedAccessSignatureToken);
// Download the blob by using the shared access signature URL.
sharedBlobService.getBlobProperties(container, blob, function (error) {
if (error) {
console.log(error);
} else {
console.log('Downloaded the blob ' + blob + ' by using the shared access signature URL: \n ' + sharedBlobService.getUrl(container, blob, sharedAccessSignatureToken));
}
callback();
});
}
function createPolicies (callback) {
// Create a "ReadWrite" policy and a "Read" policy.
var readWriteStartDate = new Date();
var readWriteExpiryDate = new Date(readWriteStartDate);
readWriteExpiryDate.setMinutes(readWriteStartDate.getMinutes() + 10);
var signedIdentifiers = {
readwrite: {
Start: readWriteStartDate,
Expiry: readWriteExpiryDate,
Permissions: 'rw'
},
read: {
Expiry: readWriteStartDate,
Permissions: 'r'
}
};
// Wait 30 seconds for the container acl to be processed
var func = function () {
var options = { publicAccessLevel: BlobUtilities.BlobContainerPublicAccessType.CONTAINER };
blobService.setContainerAcl(container, signedIdentifiers, options, function(error) {
if (error) {
console.log(error);
} else {
console.log('Uploaded the permissions for the container ' + container);
callback();
}
});
};
setTimeout(func, 30000);
}
function usePermissions (callback) {
// Read, write the blob using the shared access signature from "ReadWrite" policy.
var readWriteAccessPolicy = {
Id: 'readwrite'
};
var headers = {
cacheControl: 'no-transform',
contentDisposition: 'attachment',
contentEncoding: 'gzip',
contentLanguage: 'tr,en',
contentType: 'text/html'
};
var sharedAccessSignatureToken = blobService.generateSharedAccessSignature(container, null, {Id: 'readwrite'}, headers);
var sharedBlobService = azure.createBlobServiceWithSas(blobService.host, sharedAccessSignatureToken);
sharedBlobService.getBlobProperties(container, blob, function (error, result) {
if (error) {
console.log(error);
} else {
console.log('Downloaded the blob ' + blob + ' by using the shared access signature URL: \n ' + sharedBlobService.getUrl(container, blob, sharedAccessSignatureToken));
}
callback();
});
}
function deleteContainer (callback) {
// Delete the container.
blobService.deleteContainerIfExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Deleted the container ' + container);
callback();
}
});
}
sasSample();
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//
// Copyright (c) Microsoft and contributors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//
// See the License for the specific language governing permissions and
// limitations under the License.
//
/**
* This sample is used to provide an overview of blob snapshots and how to work with them.
*
* 1. Upload blocks and commit them.
*
* 2. Take a snapshot for that blob.
*
* 3. Re-upload one of the three blocks and commit them.
*
* 4. Get the snapshot.
*
* 5. List blobs including snapshots.
*
* 6. Delete the snapshot.
*/
var fs = require('fs');
var azure;
if (fs.existsSync('absolute path to azure-storage.js')) {
azure = require('absolute path to azure-storage');
} else {
azure = require('azure-storage');
}
var BlobUtilities = azure.BlobUtilities;
var container = 'snapshotsample';
var blob = 'snapshotsample';
var blockList = ['b1', 'b2', 'b3'];
var blockContent = ['content1', 'content2', 'content3'];
var blockContentAlternative2 = 'alternative2';
var blobService = azure.createBlobService();
// optionally set a proxy
/*var proxy = {
protocol: 'http:',
host: '127.0.0.1',
port: 8888
};
blobService.setProxy(proxy);*/
function snapshotSample () {
var processArguments = process.argv;
if (processArguments.length !== 2) {
console.log('Incorrect number of arguments. No arguments should be given.');
process.exit(1);
}
console.log('Starting snapshotSample.');
// Create the container
createContainer(function () {
// Upload a blob
uploadBlockBlob(function () {
// Create a snapshot of the blob
createSnapshot(function (snapshot) {
// Update the blob
blockContent[1] = blockContentAlternative2;
uploadBlockBlob(function () {
// Create a snapshot of the modified blob
getSnapshotToText(snapshot, function () {
// List the blob and its snapshots
listSnapshots(function () {
// Delete the snapshots
deleteSnapshots(function () {
// Delete the container
deleteContainer(function () {
console.log('Ending snapshotSample.');
});
});
});
});
});
});
});
});
}
function createContainer (callback) {
// Create the container.
blobService.createContainerIfNotExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Created the container ' + container);
callback();
}
});
}
function uploadBlockBlob(callback) {
// Upload 3 blocks and commit them.
var blocks = 0;
var blobCallbackCounter = function (block) {
++blocks;
if (blocks === blockList.length) {
console.log(' Created ' + blocks + ' blocks.');
blobService.commitBlocks(container, blob, {LatestBlocks: blockList}, function (error4) {
if (error4) {
console.log(error4);
}
else {
console.log('Committed the blob ' + blob);
callback();
}
});
}
}
for(var i = 0; i < blockList.length; i++) {
console.log(' Uploading a block. ID: ' + blockList[i] + ' Content: ' + blockContent[i]);
blobService.createBlockFromText(blockList[i], container, blob, blockContent[i], blockContent[i].length, function (error) {
if (error) {
console.log(error);
} else {
blobCallbackCounter();
}
});
}
}
function createSnapshot(callback) {
// Creates a snapshot.
blobService.createBlobSnapshot(container, blob, function (error, snapshot) {
if (error) {
console.log(error);
} else {
console.log('Created a snapshot for the blob ' + blob);
callback(snapshot);
}
});
}
function getSnapshotToText(snapshot, callback) {
// Gets a snapshot.
blobService.getBlobToText(container, blob, {snapshotId: snapshot}, function (error, text) {
if (error) {
console.log(error);
} else {
console.log('Snapshot ' + blob + '?' + snapshot + ' text: ' + text);
callback();
}
});
}
function listSnapshots (callback) {
// List the blobs, including snapshots
blobService.listBlobsSegmented(container, null, { include: BlobUtilities.BlobListingDetails.SNAPSHOTS }, function (error, results) {
if (error) {
console.log(error);
} else {
console.log('Listing the blobs under the container ' + container);
results.entries.forEach(function (blob) {
var snapshot = '';
if (blob.snapshot) {
snapshot = '; BlobSnapshot: ' + blob.snapshot;
}
console.log(' BlobName: ' + blob.name + snapshot);
});
callback();
}
});
};
function deleteSnapshots (callback) {
// Delete the snapshot.
blobService.deleteBlob(container, blob, { deleteSnapshots: BlobUtilities.SnapshotDeleteOptions.SNAPSHOTS_ONLY }, function (error) {
if (error) {
console.log(error);
} else {
console.log('Deleted the snapshots.');
callback();
}
});
};
function deleteContainer (callback) {
// Delete the container.
blobService.deleteContainerIfExists(container, function (error) {
if (error) {
console.log(error);
} else {
console.log('Deleted the container ' + container);
callback();
}
});
}
snapshotSample();
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var fs = require('fs');
var assert = require('assert');
var util = require('util');
var http = require('http');
var azure;
if (fs.existsSync('absolute path to azure-storage.js')) {
azure = require('absolute path to azure-storage');
} else {
azure = require('azure-storage');
}
var TableQuery = azure.TableQuery;
var TableUtilities = azure.TableUtilities;
var eg = TableUtilities.entityGenerator;
var tableName = 'tablequerysample';
var tableService = azure.createTableService();
// optionally set a proxy
/*var proxy = {
protocol: 'http:',
host: '127.0.0.1',
port: 8888
};
tableService.setProxy(proxy);*/
var entity1 = {
PartitionKey: eg.String('partition1'),
RowKey: eg.String('row1'),
integerfield: eg.Int32(1),
stringfield: eg.String('stringfield value'),
longfield: eg.Int64('92233720368547758')
};
var entity2 = {
PartitionKey: eg.String('partition1'),
RowKey: eg.String('row2'),
stringfield: eg.String('stringfield value'),
longfield: eg.Int64('8547758')
};
function performTableQuery() {
// Create the table
tableService.createTable(tableName, function (error1) {
assert.equal(error1, null);
// Insert the entities
insertEntities(function() {
// Return all entities
queryAllEntities(function () {
// Return entities Where certain conditions are met
queryEntitiesWhere(function () {
// Return the Top n entities
queryEntitiesTop(function () {
// Return Select fields from entities
queryEntitiesSelect(function () {
// Delete the table
tableService.deleteTable(tableName, function (error2) {
assert.equal(error2, null);
});
});
});
});
});
});
});
}
function insertEntities(callback) {
// insert the entities
tableService.insertEntity(tableName, entity1, function (error1) {
assert.equal(error1, null);
tableService.insertEntity(tableName, entity2, function (error2) {
assert.equal(error2, null);
callback();
});
});
}
function queryAllEntities(callback) {
// Select all fields
tableService.queryEntities(tableName, null, null, function (error, result) {
assert.equal(error, null);
assert.notEqual(result, null);
assert.notEqual(result.entries, null);
var entities = result.entries;
assert.equal(entities.length, 2);
var entityResult = entities[0];
assert.equal(entityResult.stringfield._, entity1.stringfield._);
assert.equal(entityResult.longfield._, entity1.longfield._);
callback();
});
}
function queryEntitiesWhere(callback) {
// Select only the entries where the longfield is great than 10,000,000
// equivalently: var tableQuery = new TableQuery().where('longfield == ?int64?', '10000000');
var tableQuery = new TableQuery().where(TableQuery.int64Filter('longfield', TableUtilities.QueryComparisons.GREATER_THAN, '10000000'));
tableService.queryEntities(tableName, tableQuery, null, function (error, result) {
assert.equal(error, null);
assert.notEqual(result, null);
assert.notEqual(result.entries, null);
var entities = result.entries;
assert.equal(entities.length, 1);
var entityResult = entities[0];
assert.equal(entityResult.longfield._, entity1.longfield._);
callback();
});
}
function queryEntitiesTop(callback) {
// Select only the top entry
var tableQuery = new TableQuery().top(1);
tableService.queryEntities(tableName, tableQuery, null, function (error, result) {
assert.equal(error, null);
assert.notEqual(result, null);
assert.notEqual(result.entries, null);
var entities = result.entries;
assert.equal(entities.length, 1);
var entityResult = entities[0];
assert.equal(entityResult.integerfield._, entity1.integerfield._);
assert.equal(entityResult.longfield._, entity1.longfield._);
callback();
});
}
function queryEntitiesSelect(callback) {
// Select specific field
var tableQuery = new TableQuery().select('integerfield');
tableService.queryEntities(tableName, tableQuery, null, function (error, result) {
assert.equal(error, null);
assert.notEqual(result, null);
assert.notEqual(result.entries, null);
var entities = result.entries;
assert.equal(entities.length, 2);
var entityResult = entities[0];
assert.equal(entityResult.integerfield._, entity1.integerfield._);
assert.equal(entityResult.longfield, undefined);
callback();
});
}
performTableQuery();