target-clickhouse
Version:
A Singer target for Clickhouse
100 lines • 6.2 kB
JavaScript
"use strict";
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 };
}
};
exports.__esModule = true;
var jsonSchemaInspector_1 = require("./jsonSchemaInspector");
var jsonSchemaTranslator_1 = require("./jsonSchemaTranslator");
var singer_node_1 = require("singer-node");
var DeletedRecordProcessor = (function () {
function DeletedRecordProcessor(meta, clickhouse, config) {
var _this = this;
this.meta = meta;
this.clickhouse = clickhouse;
this.config = config;
this.bufferedDatasToDelete = [];
this.convertValuesFormat = function (pkValues) { return pkValues.map(function (elem, index) { return _this.convertValueFormat(elem, _this.currentPkMappings[index]); }); };
this.convertValueFormat = function (pkValue, pkMapping) { return ["String", "FixedString", "DateTime", "Date", "DateTime64", "Date32", "UUID"]
.includes(pkMapping.chType) ? "'".concat(pkValue, "'") : pkValue; };
this.meta = meta;
this.currentPkMappings = this.meta.pkMappings.filter(function (pkMap) { return pkMap.pkType === jsonSchemaInspector_1.PKType.CURRENT; });
}
DeletedRecordProcessor.prototype.pushDeletedRecord = function (data) {
return __awaiter(this, void 0, void 0, function () {
var pkValues, i;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (this.currentPkMappings.length === 0) {
throw new Error("[".concat(this.meta.prop, "] cannot push deleted record to a stream without pk mapping"));
}
pkValues = new Array(this.currentPkMappings.length);
for (i = 0; i < this.currentPkMappings.length; i++) {
pkValues[i] = (0, jsonSchemaTranslator_1.extractValue)(data, this.currentPkMappings[i], this.config.translateValues);
}
this.bufferedDatasToDelete.push(this.convertValuesFormat(pkValues));
if (!(this.bufferedDatasToDelete.length == this.config.batchSize)) return [3, 2];
return [4, this.deleteBufferedData()];
case 1:
_a.sent();
_a.label = 2;
case 2: return [2];
}
});
});
};
DeletedRecordProcessor.prototype.deleteBufferedData = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!(this.bufferedDatasToDelete.length > 0)) return [3, 2];
(0, singer_node_1.log_info)("[".concat(this.meta.prop, "] deleting ").concat(this.bufferedDatasToDelete.length, " records"));
return [4, this.clickhouse.runQuery("DELETE\n FROM ".concat(this.meta.sqlTableName, "\n WHERE (").concat(this.currentPkMappings.map(function (elem) { return elem.sqlIdentifier; }).join(","), ")\n IN (").concat(this.bufferedDatasToDelete.map((function (pks) { return "(".concat(pks, ")"); }))
.join(','), ")"))];
case 1:
_a.sent();
this.bufferedDatasToDelete = [];
_a.label = 2;
case 2: return [2];
}
});
});
};
return DeletedRecordProcessor;
}());
exports["default"] = DeletedRecordProcessor;
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