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9eaf824398
* add jaeger support, link hot container & req span * adds jaeger support now with FN_JAEGER_URL, there's a simple tutorial in the operating/metrics.md file now and it's pretty easy to get up and running. * links a hot request span to a hot container span. when we change this to sample at a lower ratio we'll need to finagle the hot container span to always sample or something, otherwise we'll hide that info. at least, since we're sampling at 100% for now if this is flipped on, can see freeze/unfreeze etc. if they hit. this is useful for debugging. note that zipkin's exporter does not follow the link at all, hence jaeger... and they're backed by the Cloud Empire now (CNCF) so we'll probably use it anyway. * vendor: add thrift for jaeger
112 lines
2.9 KiB
D
112 lines
2.9 KiB
D
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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module server;
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import std.conv : to;
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import std.stdio;
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import thrift.codegen.processor;
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import thrift.protocol.binary;
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import thrift.server.simple;
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import thrift.server.transport.socket;
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import thrift.transport.buffered;
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import share.SharedService;
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import share.shared_types;
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import tutorial.Calculator;
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import tutorial.tutorial_types;
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/**
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* The actual implementation of the Calculator interface that is called by
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* the server to answer the requests.
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*/
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class CalculatorHandler : Calculator {
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void ping() {
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writeln("ping()");
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}
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int add(int n1, int n2) {
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writefln("add(%s,%s)", n1, n2);
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return n1 + n2;
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}
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int calculate(int logid, ref const(Work) work) {
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writefln("calculate(%s, {%s, %s, %s})", logid, work.op, work.num1, work.num2);
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int val;
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switch (work.op) {
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case Operation.ADD:
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val = work.num1 + work.num2;
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break;
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case Operation.SUBTRACT:
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val = work.num1 - work.num2;
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break;
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case Operation.MULTIPLY:
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val = work.num1 * work.num2;
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break;
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case Operation.DIVIDE:
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if (work.num2 == 0) {
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auto io = new InvalidOperation();
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io.whatOp = work.op;
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io.why = "Cannot divide by 0";
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throw io;
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}
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val = work.num1 / work.num2;
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break;
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default:
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auto io = new InvalidOperation();
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io.whatOp = work.op;
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io.why = "Invalid Operation";
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throw io;
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}
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auto ss = SharedStruct();
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ss.key = logid;
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ss.value = to!string(val);
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log[logid] = ss;
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return val;
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}
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SharedStruct getStruct(int logid) {
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writefln("getStruct(%s)", logid);
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return log[logid];
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}
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void zip() {
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writeln("zip()");
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}
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protected:
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SharedStruct[int] log;
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}
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void main() {
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auto protocolFactory = new TBinaryProtocolFactory!();
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auto processor = new TServiceProcessor!Calculator(new CalculatorHandler);
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auto serverTransport = new TServerSocket(9090);
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auto transportFactory = new TBufferedTransportFactory;
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auto server = new TSimpleServer(
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processor, serverTransport, transportFactory, protocolFactory);
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writeln("Starting the server on port 9090...");
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server.serve();
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writeln("done.");
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}
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