const{Storage}=require('@google-cloud/storage');conststorage=newStorage();constmyBucket=storage.bucket('my-bucket');constfile=myBucket.file('my-file');

tsconst{Storage}=require('@google-cloud/storage');conststorage=newStorage();constbucket=storage.bucket('my-bucket');constfile=bucket.file('image.png');// `gs://my-bucket/image.png`consthref=file.cloudStorageURI.href;

//-//
Downloading a File
//// The example below demonstrates how we can reference a remote file, then// pipe its contents to a local file. This is effectively creating a local// backup of your remote data.//-const{Storage}=require('@google-cloud/storage');conststorage=newStorage();constbucket=storage.bucket('my-bucket');constfs=require('fs');constremoteFile=bucket.file('image.png');constlocalFilename='/Users/stephen/Photos/image.png';remoteFile.createReadStream().on('error',function(err){}).on('response',function(response){// Server connected and responded with the specified status and headers.}).on('end',function(){// The file is fully downloaded.}).pipe(fs.createWriteStream(localFilename));//-// To limit the downloaded data to only a byte range, pass an options// object.//-constlogFile=myBucket.file('access_log');logFile.createReadStream({start:10000,end:20000}).on('error',function(err){}).pipe(fs.createWriteStream('/Users/stephen/logfile.txt'));//-// To read a tail byte range, specify only `options.end` as a negative// number.//-constlogFile=myBucket.file('access_log');logFile.createReadStream({end:-100}).on('error',function(err){}).pipe(fs.createWriteStream('/Users/stephen/logfile.txt'));

constfs=require('fs');const{Storage}=require('@google-cloud/storage');conststorage=newStorage();constmyBucket=storage.bucket('my-bucket');constfile=myBucket.file('my-file');//-//
Uploading a File
//// Now, consider a case where we want to upload a file to your bucket. You// have the option of using {@link Bucket#upload}, but that is just// a convenience method which will do the following.//-fs.createReadStream('/Users/stephen/Photos/birthday-at-the-zoo/panda.jpg').pipe(file.createWriteStream()).on('error',function(err){}).on('finish',function(){// The file upload is complete.});//-//
Uploading a File with gzip compression
//-fs.createReadStream('/Users/stephen/site/index.html').pipe(file.createWriteStream({gzip:true})).on('error',function(err){}).on('finish',function(){// The file upload is complete.});//-// Downloading the file with `createReadStream` will automatically decode// the file.//-//-//
Uploading a File with Metadata
//// One last case you may run into is when you want to upload a file to your// bucket and set its metadata at the same time. Like above, you can use// {@link Bucket#upload} to do this, which is just a wrapper around// the following.//-fs.createReadStream('/Users/stephen/Photos/birthday-at-the-zoo/panda.jpg').pipe(file.createWriteStream({metadata:{contentType:'image/jpeg',metadata:{custom:'metadata'}}})).on('error',function(err){}).on('finish',function(){// The file upload is complete.});

const{Storage}=require('@google-cloud/storage');conststorage=newStorage();constbucket=storage.bucket('albums');constfile=bucket.file('my-file');// publicUrl will be "https://storage.googleapis.com/albums/my-file"constpublicUrl=file.publicUrl();

constcrypto=require('crypto');const{Storage}=require('@google-cloud/storage');conststorage=newStorage();constmyBucket=storage.bucket('my-bucket');constencryptionKey=crypto.randomBytes(32);constfileWithCustomEncryption=myBucket.file('my-file');fileWithCustomEncryption.setEncryptionKey(encryptionKey);constfileWithoutCustomEncryption=myBucket.file('my-file');fileWithCustomEncryption.save('data',function(err){// Try to download with the File object that hasn't had// `setEncryptionKey()` called:fileWithoutCustomEncryption.download(function(err){// We will receive an error://   err.message === 'Bad Request'// Try again with the File object we called `setEncryptionKey()` on:fileWithCustomEncryption.download(function(err,contents){// contents.toString() === 'data'});});});

/**   * TODO(developer): Uncomment the following lines before running the sample.   */// The ID of your GCS bucket// const bucketName = 'your-unique-bucket-name';// The path to your file to upload// const filePath = 'path/to/your/file';// The new ID for your GCS file// const destFileName = 'your-new-file-name';// The key to encrypt the object with// const key = 'TIbv/fjexq+VmtXzAlc63J4z5kFmWJ6NdAPQulQBT7g=';// Imports the Google Cloud client libraryconst{Storage}=require('@google-cloud/storage');// Creates a clientconststorage=newStorage();asyncfunctionuploadEncryptedFile(){constoptions={destination:destFileName,encryptionKey:Buffer.from(key,'base64'),// Optional:// Set a generation-match precondition to avoid potential race conditions// and data corruptions. The request to upload is aborted if the object's// generation number does not match your precondition. For a destination// object that does not yet exist, set the ifGenerationMatch precondition to 0// If the destination object already exists in your bucket, set instead a// generation-match precondition using its generation number.preconditionOpts:{ifGenerationMatch:generationMatchPrecondition},};awaitstorage.bucket(bucketName).upload(filePath,options);console.log(`File${filePath} uploaded to gs://${bucketName}/${destFileName}`);}uploadEncryptedFile().catch(console.error);

/**   * TODO(developer): Uncomment the following lines before running the sample.   */// The ID of your GCS bucket// const bucketName = 'your-unique-bucket-name';// The ID of your GCS file// const srcFileName = 'your-file-name';// The path to which the file should be downloaded// const destFileName = '/local/path/to/file.txt';// The Base64 encoded decryption key, which should be the same key originally// used to encrypt the file// const encryptionKey = 'TIbv/fjexq+VmtXzAlc63J4z5kFmWJ6NdAPQulQBT7g=';// Imports the Google Cloud client libraryconst{Storage}=require('@google-cloud/storage');// Creates a clientconststorage=newStorage();asyncfunctiondownloadEncryptedFile(){constoptions={destination:destFileName,};// Decrypts and downloads the file. This can only be done with the key used// to encrypt and upload the file.awaitstorage.bucket(bucketName).file(srcFileName).setEncryptionKey(Buffer.from(encryptionKey,'base64')).download(options);console.log(`File${srcFileName} downloaded to${destFileName}`);}downloadEncryptedFile().catch(console.error);

const{Storage}=require('@google-cloud/storage');conststorage=newStorage();constbucket=storage.bucket('albums');constfile=bucket.file('my-file');file.setUserProject('grape-spaceship-123');