bedal
Version:
Amazon Web Services AWS DynamoDB Batch operations
149 lines (148 loc) • 8.79 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var init_1 = require("./../services/init");
var tools_1 = require("../services/tools");
var DeleteModule = (function () {
function DeleteModule() {
var _this = this;
this.batchDeleteParams = {};
this.deleteAll = function (key, callback) { return __awaiter(_this, void 0, void 0, function () {
var table, chunks, dataToDeleteParams, data, e_1;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
table = {};
chunks = [];
table[init_1.InitModule.getInstance().config.Table] = [];
this.batchDeleteParams["RequestItems"] = table;
dataToDeleteParams = this.queryFactory(key);
return [4, this.getDataToDelete(dataToDeleteParams)];
case 1:
data = _a.sent();
chunks = this.tools.chunkArray(data.Items, 24);
chunks = chunks.map(function (chunk) {
chunk = chunk.map(function (item) {
var key = {};
key[init_1.InitModule.getInstance().config.Key.PrimaryKey.name] =
item[init_1.InitModule.getInstance().config.Key.PrimaryKey.name];
if (init_1.InitModule.getInstance().config.Key.SortKey &&
item.hasOwnProperty(init_1.InitModule.getInstance().config.Key.SortKey.name)) {
key[init_1.InitModule.getInstance().config.Key.SortKey.name] =
item[init_1.InitModule.getInstance().config.Key.SortKey.name];
}
item = {
DeleteRequest: {
Key: key
}
};
return item;
});
_this.batchDeleteParams.RequestItems[init_1.InitModule.getInstance().config.Table] = chunk;
init_1.InitModule.getInstance().dynamodb.batchWriteItem(_this.batchDeleteParams, function (err, data) {
if (err) {
callback({ error: err });
}
else {
callback({ data: data });
}
});
});
return [3, 3];
case 2:
e_1 = _a.sent();
callback({ error: e_1 });
return [3, 3];
case 3: return [2];
}
});
}); };
this.getDataToDelete = function (params) {
var query = new Promise(function (resolve, reject) {
init_1.InitModule.getInstance().dynamodb.query(params, function (error, data) {
if (error)
reject(error);
resolve(data);
});
});
return query;
};
this.queryFactory = function (key) {
var typedPrimarykey = {};
var typedSortKey = {};
typedPrimarykey[init_1.InitModule.getInstance().config.Key.PrimaryKey.type] =
key[init_1.InitModule.getInstance().config.Key.PrimaryKey.name];
var KeyConditionExpression = "#" +
init_1.InitModule.getInstance().config.Key.PrimaryKey.name +
" = :" +
init_1.InitModule.getInstance().config.Key.PrimaryKey.name;
var ExpressionAttributeNames = {};
ExpressionAttributeNames["#" + init_1.InitModule.getInstance().config.Key.PrimaryKey.name] = init_1.InitModule.getInstance().config.Key.PrimaryKey.name;
var ExpressionAttributeValues = {};
var TypedExpressionAttributeValues = {};
TypedExpressionAttributeValues[init_1.InitModule.getInstance().config.Key.PrimaryKey.type] = key[init_1.InitModule.getInstance().config.Key.PrimaryKey.name];
ExpressionAttributeValues[":" + init_1.InitModule.getInstance().config.Key.PrimaryKey.name] = TypedExpressionAttributeValues;
if (init_1.InitModule.getInstance().config.Key.SortKey &&
key.hasOwnProperty(init_1.InitModule.getInstance().config.Key.SortKey.name)) {
typedSortKey[init_1.InitModule.getInstance().config.Key.SortKey.type] =
key[init_1.InitModule.getInstance().config.Key.SortKey.name];
KeyConditionExpression =
KeyConditionExpression +
" AND #" +
init_1.InitModule.getInstance().config.Key.SortKey.name +
" = :" +
init_1.InitModule.getInstance().config.Key.SortKey.name;
ExpressionAttributeNames["#" + init_1.InitModule.getInstance().config.Key.SortKey.name] = init_1.InitModule.getInstance().config.Key.SortKey.name;
var TypedExpressionAttributeValues_1 = {};
TypedExpressionAttributeValues_1[init_1.InitModule.getInstance().config.Key.SortKey.type] = key[init_1.InitModule.getInstance().config.Key.SortKey.name];
ExpressionAttributeValues[":" + init_1.InitModule.getInstance().config.Key.SortKey.name] = TypedExpressionAttributeValues_1;
}
return {
TableName: init_1.InitModule.getInstance().config.Table,
KeyConditionExpression: KeyConditionExpression,
ExpressionAttributeNames: ExpressionAttributeNames,
ExpressionAttributeValues: ExpressionAttributeValues
};
};
this.tools = new tools_1.ToolsModule();
}
return DeleteModule;
}());
exports.DeleteModule = DeleteModule;