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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.messagebus.routing;
import com.yahoo.jrt.ListenFailedException;
import com.yahoo.jrt.slobrok.server.Slobrok;
import com.yahoo.messagebus.*;
import com.yahoo.messagebus.Error;
import com.yahoo.messagebus.network.Identity;
import com.yahoo.messagebus.network.rpc.RPCNetworkParams;
import com.yahoo.messagebus.network.rpc.test.TestServer;
import com.yahoo.messagebus.test.Receptor;
import com.yahoo.messagebus.test.SimpleMessage;
import com.yahoo.messagebus.test.SimpleProtocol;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.util.Arrays;
import java.util.List;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
/**
* @author Simon Thoresen Hult
*/
public class RoutingContextTestCase {
public static final int TIMEOUT_SECS = 120;
Slobrok slobrok;
TestServer srcServer, dstServer;
SourceSession srcSession;
DestinationSession dstSession;
@BeforeEach
public void setUp() throws ListenFailedException {
slobrok = new Slobrok();
dstServer = new TestServer(new MessageBusParams().addProtocol(new SimpleProtocol()),
new RPCNetworkParams().setIdentity(new Identity("dst")).setSlobrokConfigId(TestServer.getSlobrokConfig(slobrok)));
dstSession = dstServer.mb.createDestinationSession(new DestinationSessionParams().setName("session").setMessageHandler(new Receptor()));
srcServer = new TestServer(new MessageBusParams().setRetryPolicy(new RetryTransientErrorsPolicy().setBaseDelay(0)).addProtocol(new SimpleProtocol()),
new RPCNetworkParams().setSlobrokConfigId(TestServer.getSlobrokConfig(slobrok)));
srcSession = srcServer.mb.createSourceSession(
new SourceSessionParams().setTimeout(600.0).setReplyHandler(new Receptor()));
assertTrue(srcServer.waitSlobrok("dst/session", 1));
}
@AfterEach
public void tearDown() {
slobrok.stop();
dstSession.destroy();
dstServer.destroy();
srcSession.destroy();
srcServer.destroy();
}
@Test
void testSingleDirective() {
SimpleProtocol protocol = new SimpleProtocol();
protocol.addPolicyFactory("Custom", new CustomPolicyFactory(
false,
Arrays.asList("foo", "bar", "baz/cox"),
Arrays.asList("foo", "bar")));
srcServer.mb.putProtocol(protocol);
srcServer.setupRouting(new RoutingTableSpec(SimpleProtocol.NAME)
.addRoute(new RouteSpec("myroute").addHop("myhop"))
.addHop(new HopSpec("myhop", "[Custom]")
.addRecipient("foo").addRecipient("bar").addRecipient("baz/cox")));
for (int i = 0; i < 2; ++i) {
assertTrue(srcSession.send(createMessage("msg"), "myroute").isAccepted());
Reply reply = ((Receptor) srcSession.getReplyHandler()).getReply(TIMEOUT_SECS);
assertNotNull(reply);
System.out.println(reply.getTrace());
assertFalse(reply.hasErrors());
}
}
@Test
void testMoreDirectives() {
SimpleProtocol protocol = new SimpleProtocol();
protocol.addPolicyFactory("Custom", new CustomPolicyFactory(
false,
Arrays.asList("foo", "foo/bar", "foo/bar0/baz", "foo/bar1/baz", "foo/bar/baz/cox"),
Arrays.asList("foo/bar0/baz", "foo/bar1/baz")));
srcServer.mb.putProtocol(protocol);
srcServer.setupRouting(new RoutingTableSpec(SimpleProtocol.NAME)
.addRoute(new RouteSpec("myroute").addHop("myhop"))
.addHop(new HopSpec("myhop", "foo/[Custom]/baz")
.addRecipient("foo").addRecipient("foo/bar")
.addRecipient("foo/bar0/baz").addRecipient("foo/bar1/baz")
.addRecipient("foo/bar/baz/cox")));
for (int i = 0; i < 2; ++i) {
assertTrue(srcSession.send(createMessage("msg"), "myroute").isAccepted());
Reply reply = ((Receptor) srcSession.getReplyHandler()).getReply(TIMEOUT_SECS);
assertNotNull(reply);
assertFalse(reply.hasErrors());
}
}
@Test
void testRecipientsRemain() {
SimpleProtocol protocol = new SimpleProtocol();
protocol.addPolicyFactory("First", new CustomPolicyFactory(true, List.of("foo/bar"), List.of("foo/[Second]")));
protocol.addPolicyFactory("Second", new CustomPolicyFactory(false, List.of("foo/bar"), List.of("foo/bar")));
srcServer.mb.putProtocol(protocol);
srcServer.setupRouting(new RoutingTableSpec(SimpleProtocol.NAME)
.addRoute(new RouteSpec("myroute").addHop("myhop"))
.addHop(new HopSpec("myhop", "[First]/[Second]")
.addRecipient("foo/bar")));
for (int i = 0; i < 2; ++i) {
assertTrue(srcSession.send(createMessage("msg"), "myroute").isAccepted());
Reply reply = ((Receptor) srcSession.getReplyHandler()).getReply(TIMEOUT_SECS);
assertNotNull(reply);
assertFalse(reply.hasErrors());
}
}
@Test
void testToString() {
assertEquals("node : null, directive: 1, errors: [], selectOnRetry: true context: null", new RoutingContext(null, 1).toString());
}
@Test
void testConstRoute() {
SimpleProtocol protocol = new SimpleProtocol();
protocol.addPolicyFactory("DocumentRouteSelector",
new CustomPolicyFactory(true, List.of("dst"), List.of("dst")));
srcServer.mb.putProtocol(protocol);
srcServer.setupRouting(new RoutingTableSpec(SimpleProtocol.NAME)
.addRoute(new RouteSpec("default").addHop("indexing"))
.addHop(new HopSpec("indexing", "[DocumentRouteSelector]").addRecipient("dst"))
.addHop(new HopSpec("dst", "dst/session")));
for (int i = 0; i < 2; ++i) {
assertTrue(srcSession.send(createMessage("msg"), Route.parse("route:default")).isAccepted());
Message msg = ((Receptor) dstSession.getMessageHandler()).getMessage(TIMEOUT_SECS);
assertNotNull(msg);
dstSession.acknowledge(msg);
Reply reply = ((Receptor) srcSession.getReplyHandler()).getReply(TIMEOUT_SECS);
assertNotNull(reply);
assertFalse(reply.hasErrors());
}
}
private Message createMessage(String msg) {
Message ret = new SimpleMessage(msg);
ret.getTrace().setLevel(9);
return ret;
}
private static class CustomPolicyFactory implements SimpleProtocol.PolicyFactory {
final boolean forward;
final List<String> expectedAll;
final List<String> expectedMatched;
public CustomPolicyFactory(boolean forward, List<String> all, List<String> matched) {
this.forward = forward;
this.expectedAll = all;
this.expectedMatched = matched;
}
public RoutingPolicy create(String param) {
return new CustomPolicy(this);
}
}
private static class CustomPolicy implements RoutingPolicy {
CustomPolicyFactory factory;
public CustomPolicy(CustomPolicyFactory factory) {
this.factory = factory;
}
public void select(RoutingContext ctx) {
Reply reply = new EmptyReply();
reply.getTrace().setLevel(9);
List<Route> recipients = ctx.getAllRecipients();
if (factory.expectedAll.size() == recipients.size()) {
ctx.trace(1, "Got " + recipients.size() + " expected recipients.");
for (Route route : recipients) {
if (factory.expectedAll.contains(route.toString())) {
ctx.trace(1, "Got expected recipient '" + route + "'.");
} else {
reply.addError(new Error(ErrorCode.APP_FATAL_ERROR,
"Recipient '" + route + "' not expected."));
}
}
} else {
reply.addError(new Error(ErrorCode.APP_FATAL_ERROR,
"Expected " + factory.expectedAll.size() + " recipients, got " + recipients.size() + "."));
}
if (ctx.getNumRecipients() == recipients.size()) {
for (int i = 0; i < recipients.size(); ++i) {
if (recipients.get(i) == ctx.getRecipient(i)) {
ctx.trace(1, "getRecipient(" + i + ") matches getAllRecipients().get(" + i + ")");
} else {
reply.addError(new Error(ErrorCode.APP_FATAL_ERROR,
"getRecipient(" + i + ") differs from getAllRecipients().get(" + i + ")"));
}
}
} else {
reply.addError(new Error(ErrorCode.APP_FATAL_ERROR,
"getNumRecipients() differs from getAllRecipients().size()"));
}
recipients = ctx.getMatchedRecipients();
if (factory.expectedMatched.size() == recipients.size()) {
ctx.trace(1, "Got " + recipients.size() + " matched recipients.");
for (Route route : recipients) {
if (factory.expectedMatched.contains(route.toString())) {
ctx.trace(1, "Got matched recipient '" + route + "'.");
} else {
reply.addError(new Error(ErrorCode.APP_FATAL_ERROR,
"Matched recipient '" + route + "' not expected."));
}
}
} else {
reply.addError(new Error(ErrorCode.APP_FATAL_ERROR,
"Expected " + factory.expectedAll.size() + " matched recipients, got " + recipients.size() + "."));
}
if (!reply.hasErrors() && factory.forward) {
for (Route route : recipients) {
ctx.addChild(route);
}
} else {
ctx.setReply(reply);
}
}
public void merge(RoutingContext ctx) {
Reply ret = new EmptyReply();
for (RoutingNodeIterator it = ctx.getChildIterator();
it.isValid(); it.next()) {
Reply reply = it.getReplyRef();
for (int i = 0; i < reply.getNumErrors(); ++i) {
ret.addError(reply.getError(i));
}
}
ctx.setReply(ret);
}
@Override
public void destroy() {
}
}
}
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