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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.rpc;
import com.yahoo.cloud.config.ConfigserverConfig;
import com.yahoo.config.provision.HostLivenessTracker;
import com.yahoo.config.provision.TenantName;
import com.yahoo.jrt.Request;
import com.yahoo.jrt.Spec;
import com.yahoo.jrt.Supervisor;
import com.yahoo.jrt.Transport;
import com.yahoo.net.HostName;
import com.yahoo.test.ManualClock;
import com.yahoo.vespa.config.GenerationCounter;
import com.yahoo.vespa.config.server.*;
import com.yahoo.vespa.config.server.filedistribution.FileServer;
import com.yahoo.vespa.config.server.host.ConfigRequestHostLivenessTracker;
import com.yahoo.vespa.config.server.host.HostRegistries;
import com.yahoo.vespa.config.server.monitoring.Metrics;
import com.yahoo.vespa.config.server.tenant.MockTenantProvider;
import com.yahoo.vespa.config.server.tenant.TenantHandlerProvider;
import com.yahoo.vespa.flags.InMemoryFlagSource;
import org.junit.After;
import org.junit.rules.TemporaryFolder;
import java.io.IOException;
import java.time.Duration;
import java.time.Instant;
import java.util.ArrayList;
import java.util.List;
import static com.yahoo.vespa.config.server.SuperModelRequestHandlerTest.emptyNodeFlavors;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
/**
* Tester for running rpc server.
*
* @author Ulf Lilleengen
*/
public class RpcTester implements AutoCloseable {
private final ManualClock clock = new ManualClock(Instant.ofEpochMilli(100));
private final String myHostname = HostName.getLocalhost();
private final HostLivenessTracker hostLivenessTracker = new ConfigRequestHostLivenessTracker(clock);
private RpcServer rpcServer;
private MockTenantProvider tenantProvider;
private GenerationCounter generationCounter;
private Thread t;
private Supervisor sup;
private Spec spec;
private List<Integer> allocatedPorts;
private final TemporaryFolder temporaryFolder;
private final ConfigserverConfig configserverConfig;
RpcTester(TemporaryFolder temporaryFolder) throws InterruptedException, IOException {
this(temporaryFolder, new ConfigserverConfig.Builder());
}
RpcTester(TemporaryFolder temporaryFolder, ConfigserverConfig.Builder configBuilder) throws InterruptedException, IOException {
this.temporaryFolder = temporaryFolder;
allocatedPorts = new ArrayList<>();
int port = allocatePort();
spec = createSpec(port);
tenantProvider = new MockTenantProvider();
generationCounter = new MemoryGenerationCounter();
configBuilder.rpcport(port);
configserverConfig = new ConfigserverConfig(configBuilder);
createAndStartRpcServer();
assertFalse(hostLivenessTracker.lastRequestFrom(myHostname).isPresent());
}
public void close() {
for (Integer port : allocatedPorts) {
PortRangeAllocator.releasePort(port);
}
}
private int allocatePort() throws InterruptedException {
int port = PortRangeAllocator.findAvailablePort();
allocatedPorts.add(port);
return port;
}
void createAndStartRpcServer() throws IOException {
rpcServer = new RpcServer(configserverConfig,
new SuperModelRequestHandler(new TestConfigDefinitionRepo(),
configserverConfig,
new SuperModelManager(
configserverConfig,
emptyNodeFlavors(),
generationCounter,
new InMemoryFlagSource())),
Metrics.createTestMetrics(), new HostRegistries(),
hostLivenessTracker, new FileServer(temporaryFolder.newFolder()));
rpcServer.onTenantCreate(TenantName.from("default"), tenantProvider);
t = new Thread(rpcServer);
t.start();
sup = new Supervisor(new Transport());
pingServer();
}
@After
public void stopRpc() throws InterruptedException {
rpcServer.stop();
t.join();
}
private Spec createSpec(int port) {
return new Spec("tcp/localhost:" + port);
}
private void pingServer() {
long endTime = System.currentTimeMillis() + 60_000;
Request req = new Request("ping");
while (System.currentTimeMillis() < endTime) {
performRequest(req);
if (!req.isError() && req.returnValues().size() > 0 && req.returnValues().get(0).asInt32() == 0) {
break;
}
req = new Request("ping");
}
assertFalse(req.isError());
assertTrue(req.returnValues().size() > 0);
assertThat(req.returnValues().get(0).asInt32(), is(0));
}
void performRequest(Request req) {
clock.advance(Duration.ofMillis(10));
sup.connect(spec).invokeSync(req, 120.0);
if (req.methodName().equals(RpcServer.getConfigMethodName))
assertEquals(clock.instant(), hostLivenessTracker.lastRequestFrom(myHostname).get());
}
RpcServer rpcServer() {
return rpcServer;
}
TenantHandlerProvider tenantProvider() {
return tenantProvider;
}
GenerationCounter generationCounter() {
return generationCounter;
}
}
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