289 lines
12 KiB
JavaScript
289 lines
12 KiB
JavaScript
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exports.newBlobStorage = function newBlobStorage(BOT) {
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let FULL_LOG = true;
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let LOG_FILE_CONTENT = false;
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let bot = BOT;
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const ROOT_DIR = './';
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const MODULE_NAME = "Blob Storage";
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let storage = require('azure-storage');
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const DEBUG_MODULE = require('./DebugLog');
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let logger;
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let thisObject = {
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initialize: initialize,
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createFolder: createFolder,
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createTextFile: createTextFile,
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getTextFile: getTextFile
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};
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let readOnlyBlobService;
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let writeOnlyBlobService;
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let containerName;
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let environment = global.CURRENT_ENVIRONMENT;
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return thisObject;
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function initialize(pDataOwner, callBackFunction, disableLogging) {
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try {
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containerName = pDataOwner.toLowerCase();
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if (disableLogging === true) {
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FULL_LOG = false;
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LOG_FILE_CONTENT = false;
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} else {
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logger = DEBUG_MODULE.newDebugLog();
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logger.fileName = MODULE_NAME;
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logger.bot = bot;
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logger.initialize();
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logger.fileName = MODULE_NAME + '.' + pDataOwner;
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}
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if (pDataOwner.environment !== undefined) { // This is use for data migration from one environment to the other.
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environment = pDataOwner.environment;
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}
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if (FULL_LOG === true) { logger.write("[INFO] initialize -> Entering function."); }
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if (FULL_LOG === true) { logger.write("[INFO] initialize -> environment = " + environment); }
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if (FULL_LOG === true) { logger.write("[INFO] initialize -> containerName = " + containerName); }
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if (global.STORAGE_PERMISSIONS[environment][containerName].readConnectionString !== undefined) {
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readOnlyBlobService = storage.createBlobService(global.STORAGE_PERMISSIONS[environment][containerName].readConnectionString);
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}
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if (global.STORAGE_PERMISSIONS[environment][containerName].writeConnectionString !== undefined) {
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writeOnlyBlobService = storage.createBlobService(global.STORAGE_PERMISSIONS[environment][containerName].writeConnectionString);
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}
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if (readOnlyBlobService !== undefined || writeOnlyBlobService !== undefined) {
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callBackFunction(global.DEFAULT_OK_RESPONSE);
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return;
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}
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}
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catch (err) {
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logger.write("[ERROR] initialize -> err = " + err.message);
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callBack(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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function createFolder(pFolderPath, callBackFunction) {
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if (FULL_LOG === true) { logger.write("[INFO] createFolder -> Entering function."); }
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try {
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/* Folders do not need to be created when using blobs. */
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callBackFunction(global.DEFAULT_OK_RESPONSE);
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return;
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}
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catch (err) {
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logger.write("[ERROR] createFolder -> err = " + err.message);
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callBackFunction(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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function createTextFile(pFolderPath, pFileName, pFileContent, callBackFunction) {
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if (writeOnlyBlobService === undefined) {
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logger.write("[ERROR] createTextFile -> initialize function not executed or failed. Can not process this request. Sorry.");
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callBackFunction(global.DEFAULT_FAIL_RESPONSE);
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return;
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}
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try {
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if (FULL_LOG === true) {
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logger.write("[INFO] createTextFile -> About to create a text file.");
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logger.write("[INFO] createTextFile -> containerName = " + containerName);
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logger.write("[INFO] createTextFile -> pFolderPath = " + pFolderPath);
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logger.write("[INFO] createTextFile -> pFileName = " + pFileName);
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}
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writeOnlyBlobService.createBlockBlobFromText(containerName, pFolderPath + "/" + pFileName, pFileContent, onFileCreated);
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function onFileCreated(err, result, response) {
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if (FULL_LOG === true) {
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logger.write("[INFO] createTextFile -> onFileCreated -> Response from Azure received.");
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logger.write("[INFO] createTextFile -> onFileCreated -> err = " + JSON.stringify(err));
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logger.write("[INFO] createTextFile -> onFileCreated -> result = " + JSON.stringify(result));
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logger.write("[INFO] createTextFile -> onFileCreated -> response = " + JSON.stringify(response));
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}
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if (err) {
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logger.write("[ERROR] createTextFile -> onFileCreated -> err = " + JSON.stringify(err));
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logger.write("[ERROR] createTextFile -> onFileCreated -> result = " + JSON.stringify(result));
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logger.write("[ERROR] createTextFile -> onFileCreated -> response = " + JSON.stringify(response));
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if (err.code === 'ServerBusy'
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|| err.code === 'ECONNRESET'
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|| err.code === 'ENOTFOUND'
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|| err.code === 'ESOCKETTIMEDOUT'
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|| err.code === 'ETIMEDOUT'
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|| err.code === 'ECONNREFUSED') {
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setTimeout(secondTry, 1000);
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return;
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function secondTry() {
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logger.write("[INFO] createTextFile -> onFileCreated -> secondTry -> Retrying to create the file.");
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writeOnlyBlobService.createBlockBlobFromText(containerName, pFolderPath + "/" + pFileName, pFileContent, onSecondTry);
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function onSecondTry(err, result, response) {
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if (err) {
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logger.write("[ERROR] createTextFile -> onFileCreated -> secondTry -> File not created. Giving Up.");
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callBackFunction(global.DEFAULT_RETRY_RESPONSE);
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} else {
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logger.write("[INFO] createTextFile -> onFileCreated -> secondTry -> File succesfully created on second try.");
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callBackFunction(global.DEFAULT_OK_RESPONSE);
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}
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}
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}
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}
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logger.write("[ERROR] createTextFile -> onFileCreated -> Dont know what to do here. Cancelling operation. ");
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callBackFunction(global.DEFAULT_FAIL_RESPONSE);
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} else {
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if (FULL_LOG === true) { logger.write("[INFO] createTextFile -> onFileCreated -> File Created."); }
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callBackFunction(global.DEFAULT_OK_RESPONSE);
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}
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}
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}
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catch (err) {
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logger.write("[ERROR] 'createTextFile' -> err = " + err.message);
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callBackFunction(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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function getTextFile(pFolderPath, pFileName, callBackFunction) {
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if (readOnlyBlobService === undefined) {
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logger.write("[ERROR] getTextFile -> initialize function not executed or failed. Can not process this request. Sorry.");
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callBackFunction(global.DEFAULT_FAIL_RESPONSE);
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return;
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}
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try {
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if (FULL_LOG === true) {
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logger.write("[INFO] getTextFile -> About to get a text file.");
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logger.write("[INFO] getTextFile -> containerName = " + containerName);
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logger.write("[INFO] getTextFile -> pFolderPath = " + pFolderPath);
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logger.write("[INFO] getTextFile -> pFileName = " + pFileName);
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}
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readOnlyBlobService.getBlobToText(containerName, pFolderPath + "/" + pFileName, onFileReceived);
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function onFileReceived(err, text, response) {
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if (FULL_LOG === true) {
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logger.write("[INFO] getTextFile -> onFileReceived -> Response from Azure received.");
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logger.write("[INFO] getTextFile -> onFileReceived -> err = " + JSON.stringify(err));
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logger.write("[INFO] getTextFile -> onFileReceived -> response = " + JSON.stringify(response));
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}
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if (LOG_FILE_CONTENT === true) {
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logger.write("[INFO] getTextFile -> onFileReceived -> text = " + text);
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}
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if (err) {
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if (err.code === 'ServerBusy'
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|| err.code === 'ECONNRESET'
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|| err.code === 'ENOTFOUND'
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|| err.code === 'ESOCKETTIMEDOUT'
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|| err.code === 'ETIMEDOUT'
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|| err.code === 'ECONNREFUSED') {
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setTimeout(secondTry, 1000);
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return;
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function secondTry() {
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logger.write("[INFO] getTextFile -> onFileReceived -> secondTry -> Retrying to get the file.");
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readOnlyBlobService.getBlobToText(containerName, pFolderPath + "/" + pFileName, onSecondTry);
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function onSecondTry(err, text, response) {
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if (err) {
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logger.write("[ERROR] getTextFile -> onFileReceived -> secondTry -> File not retrieved. Giving Up.");
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callBackFunction(global.DEFAULT_RETRY_RESPONSE);
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} else {
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logger.write("[INFO] getTextFile -> onFileReceived -> secondTry -> File succesfully retrieved on second try.");
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callBackFunction(global.DEFAULT_OK_RESPONSE, text);
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}
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}
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}
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}
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if (err.code === "BlobNotFound") {
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/* This is how Azure tell us the file does not exist. */
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let customErr = {
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result: global.CUSTOM_FAIL_RESPONSE.result,
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message: "File does not exist."
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};
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logger.write("[ERROR] getTextFile -> onFileReceived -> Custom Response -> message = " + customErr.message);
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callBackFunction(customErr);
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return;
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}
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if (err.code === "ParentNotFound") {
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/* This is how Azure tell us the folder where the file was supposed to be does not exist. We map this to our own response. */
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let customErr = {
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result: global.CUSTOM_FAIL_RESPONSE.result,
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message: "Folder does not exist."
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};
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logger.write("[ERROR] getTextFile -> onFileReceived -> Custom Response -> message = " + customErr.message);
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callBackFunction(customErr);
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return;
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}
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logger.write("[ERROR] getTextFile -> onFileReceived -> Dont know what to do here. Cancelling operation. ");
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callBackFunction(global.DEFAULT_FAIL_RESPONSE);
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} else {
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if (FULL_LOG === true) { logger.write("[INFO] getTextFile -> onFileReceived -> File retrieved."); }
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callBackFunction(global.DEFAULT_OK_RESPONSE, text);
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}
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}
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}
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catch (err) {
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logger.write("[ERROR] 'getTextFile' -> err = " + err.message);
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callBackFunction(global.DEFAULT_FAIL_RESPONSE);
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}
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}
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}; |