fix(plc4j): Stabilization of OPC UA driver tests.

First and foremost - this commit switches OPC-UA tests to rely on dynamic port.

This implies also slight change to endpoint selection method and possibility to override desired endpoint port and host which might differ from host/port reported by OPC-UA server.
Because server is not aware of actual tcp port and host used by client, it is client duty to make proper decission when looking for endpoint.

Related to #1764.

Signed-off-by: Łukasz Dywicki <[email protected]>

plc4j/drivers/opcua/src/main/java/org/apache/plc4x/java/opcua/config/OpcuaConfiguration.java

@@ -135,6 +135,14 @@ public class OpcuaConfiguration implements PlcConnectionConfiguration {
     @Description("TCP encoding options")
     private Limits limits;
 
+    @ConfigurationParameter("endpoint-host")
+    @Description("Endpoint host used to establish secure channel.")
+    private String endpointHost;
+
+    @ConfigurationParameter("endpoint-port")
+    @Description("Endpoint port used to establish secure channel")
+    private Integer endpointPort;
+
     public String getProtocolCode() {
         return protocolCode;
     }
@@ -228,6 +236,14 @@ public long getNegotiationTimeout() {
         return negotiationTimeout;
     }
 
+    public String getEndpointHost() {
+        return endpointHost;
+    }
+
+    public Integer getEndpointPort() {
+        return endpointPort;
+    }
+
     @Override
     public String toString() {
         return "OpcuaConfiguration{" +
@@ -240,5 +256,6 @@ public String toString() {
             ", limits=" + limits +
             '}';
     }
+
 }
 

plc4j/drivers/opcua/src/main/java/org/apache/plc4x/java/opcua/context/OpcuaDriverContext.java

@@ -111,10 +111,6 @@ public String getHost() {
         return host;
     }
 
-    public void setHost(String host) {
-        this.host = host;
-    }
-
     public String getPort() {
         return port;
     }
@@ -126,10 +122,6 @@ public String getEndpoint() {
     public String getTransportEndpoint() {
         return transportEndpoint;
     }
-
-    public void setTransportEndpoint(String transportEndpoint) {
-        this.transportEndpoint = transportEndpoint;
-    }
 
     public X509Certificate getServerCertificate() {
         return serverCertificate;
@@ -147,6 +139,13 @@ public void setConfiguration(OpcuaConfiguration configuration) {
         port = matcher.group("transportPort");
         transportEndpoint = matcher.group("transportEndpoint");
 
+        if (configuration.getEndpointHost() != null) {
+            host = configuration.getEndpointHost();
+        }
+        if (configuration.getEndpointPort() != null) {
+            port = String.valueOf(configuration.getEndpointPort());
+        }
+
         String portAddition = port != null ? ":" + port : "";
         endpoint = "opc." + code + "://" + host + portAddition + transportEndpoint;
 

plc4j/drivers/opcua/src/main/java/org/apache/plc4x/java/opcua/context/SecureChannel.java

@@ -28,19 +28,24 @@
 import java.security.cert.CertificateEncodingException;
 import java.security.cert.CertificateFactory;
 import java.security.cert.X509Certificate;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.HashSet;
 import java.util.Map.Entry;
+import java.util.Set;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.TimeUnit;
 import java.util.function.Function;
 import java.util.function.Supplier;
+import java.util.stream.Collectors;
 import org.apache.commons.lang3.RandomStringUtils;
-import org.apache.commons.lang3.StringUtils;
 import org.apache.plc4x.java.api.authentication.PlcAuthentication;
 import org.apache.plc4x.java.api.authentication.PlcUsernamePasswordAuthentication;
 import org.apache.plc4x.java.api.exceptions.PlcRuntimeException;
 import org.apache.plc4x.java.opcua.config.OpcuaConfiguration;
 import org.apache.plc4x.java.opcua.readwrite.*;
+import org.apache.plc4x.java.opcua.security.MessageSecurity;
 import org.apache.plc4x.java.opcua.security.SecurityPolicy;
 import org.apache.plc4x.java.opcua.security.SecurityPolicy.SignatureAlgorithm;
 import org.apache.plc4x.java.spi.generation.*;
@@ -56,11 +61,8 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.CompletableFuture;
-import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import static java.util.concurrent.Executors.newSingleThreadExecutor;
-
 public class SecureChannel {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(SecureChannel.class);
@@ -91,7 +93,7 @@ public class SecureChannel {
     private final OpcuaDriverContext driverContext;
     private final Conversation conversation;
     private ScheduledFuture<?> keepAlive;
-    private final List<String> endpoints = new ArrayList<>();
+    private final Set<String> endpoints = new HashSet<>();
     private double sessionTimeout;
     private long revisedLifetime;
 
@@ -117,9 +119,9 @@ public SecureChannel(Conversation conversation, RequestTransactionManager tm, Op
         // Generate a list of endpoints we can use.
         try {
             InetAddress address = InetAddress.getByName(driverContext.getHost());
-            this.endpoints.add(address.getHostAddress());
-            this.endpoints.add(address.getHostName());
-            this.endpoints.add(address.getCanonicalHostName());
+            this.endpoints.add("opc.tcp://" + address.getHostAddress() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint());
+            this.endpoints.add("opc.tcp://" + address.getHostName() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint());
+            this.endpoints.add("opc.tcp://" + address.getCanonicalHostName() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint());
         } catch (UnknownHostException e) {
             LOGGER.warn("Unable to resolve host name. Using original host from connection string which may cause issues connecting to server");
             this.endpoints.add(driverContext.getHost());
@@ -313,23 +315,24 @@ private CompletableFuture<ActivateSessionResponse> onConnectActivateSessionReque
         conversation.setRemoteCertificate(getX509Certificate(sessionResponse.getServerCertificate().getStringValue()));
         conversation.setRemoteNonce(sessionResponse.getServerNonce().getStringValue());
 
-        String[] endpoints = new String[3];
+        List<String> contactPoints = new ArrayList<>(3);
         try {
             InetAddress address = InetAddress.getByName(driverContext.getHost());
-            endpoints[0] = "opc.tcp://" + address.getHostAddress() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint();
-            endpoints[1] = "opc.tcp://" + address.getHostName() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint();
-            endpoints[2] = "opc.tcp://" + address.getCanonicalHostName() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint();
+            contactPoints.add("opc.tcp://" + address.getHostAddress() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint());
+            contactPoints.add("opc.tcp://" + address.getHostName() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint());
+            contactPoints.add("opc.tcp://" + address.getCanonicalHostName() + ":" + driverContext.getPort() + driverContext.getTransportEndpoint());
         } catch (UnknownHostException e) {
             LOGGER.debug("error getting host", e);
         }
 
-        Entry<EndpointDescription, UserTokenPolicy> endpointAndAuthPolicy = selectEndpoint(sessionResponse);
-        if (endpointAndAuthPolicy == null) {
-            throw new PlcRuntimeException("Unable to find endpoint - " + endpoints[1]);
+        Entry<EndpointDescription, UserTokenPolicy> selectedEndpoint = selectEndpoint(sessionResponse.getServerEndpoints(), contactPoints,
+            configuration.getSecurityPolicy(), configuration.getMessageSecurity());
+        if (selectedEndpoint == null) {
+            throw new PlcRuntimeException("Unable to find endpoint matching  - " + contactPoints.get(1));
         }
 
-        PascalString policyId = endpointAndAuthPolicy.getValue().getPolicyId();
-        UserTokenType tokenType = endpointAndAuthPolicy.getValue().getTokenType();
+        PascalString policyId = selectedEndpoint.getValue().getPolicyId();
+        UserTokenType tokenType = selectedEndpoint.getValue().getTokenType();
         ExtensionObject userIdentityToken = getIdentityToken(tokenType, policyId.getStringValue());
         RequestHeader requestHeader = conversation.createRequestHeader();
         SignatureData clientSignature = new SignatureData(NULL_STRING, NULL_BYTE_STRING);
@@ -421,27 +424,19 @@ public CompletableFuture<EndpointDescription> onDiscoverGetEndpointsRequest() {
 
         return conversation.submit(endpointsRequest, GetEndpointsResponse.class).thenApply(response -> {
             List<ExtensionObjectDefinition> endpoints = response.getEndpoints();
-            MessageSecurityMode effectiveMode = this.configuration.getSecurityPolicy() == SecurityPolicy.NONE ? MessageSecurityMode.messageSecurityModeNone : this.configuration.getMessageSecurity().getMode();
-            for (ExtensionObjectDefinition endpoint : endpoints) {
-                EndpointDescription endpointDescription = (EndpointDescription) endpoint;
-
-                boolean urlMatch = endpointDescription.getEndpointUrl().getStringValue().equals(this.endpoint.getStringValue());
-                boolean policyMatch = endpointDescription.getSecurityPolicyUri().getStringValue().equals(this.configuration.getSecurityPolicy().getSecurityPolicyUri());
-                boolean msgSecurityMatch = endpointDescription.getSecurityMode().equals(effectiveMode);
-
-                LOGGER.debug("Validate OPC UA endpoint {} during discovery phase."
-                    + "Expected {}. Endpoint policy {} looking for {}. Message security {}, looking for {}", endpointDescription.getEndpointUrl().getStringValue(), this.endpoint.getStringValue(),
-                    endpointDescription.getSecurityPolicyUri().getStringValue(), configuration.getSecurityPolicy().getSecurityPolicyUri(),
-                    endpointDescription.getSecurityMode(), configuration.getMessageSecurity().getMode());
-
-                if (urlMatch && policyMatch && msgSecurityMatch) {
-                   LOGGER.info("Found OPC UA endpoint {}", this.endpoint.getStringValue());
-                   return endpointDescription;
-                }
+            Entry<EndpointDescription, UserTokenPolicy> entry = selectEndpoint(response.getEndpoints(), this.endpoints, this.configuration.getSecurityPolicy(), this.configuration.getMessageSecurity());
+
+            if (entry == null) {
+                Set<String> endpointUris = endpoints.stream()
+                    .filter(EndpointDescription.class::isInstance)
+                    .map(EndpointDescription.class::cast)
+                    .map(EndpointDescription::getEndpointUrl)
+                    .map(PascalString::getStringValue)
+                    .collect(Collectors.toSet());
+                throw new IllegalArgumentException("Could not find endpoint matching client configuration. Tested " + endpointUris + ". "
+                    + "Was looking for " + this.endpoint.getStringValue() + " " + this.configuration.getSecurityPolicy().getSecurityPolicyUri() + " " + this.configuration.getMessageSecurity().getMode());
             }
-
-            throw new IllegalArgumentException("Could not find endpoint matching client configuration. Tested " + endpoints.size() + " endpoints. "
-                + "None matched " + this.endpoint.getStringValue() + " " + this.configuration.getSecurityPolicy().getSecurityPolicyUri() + " " + this.configuration.getMessageSecurity().getMode());
+            return entry.getKey();
         });
     }
 
@@ -503,32 +498,49 @@ private static ReadBufferByteBased toBuffer(Supplier<Payload> supplier) {
     /**
      * Selects the endpoint and authentication policy based on client settings.
      *
-     * @param sessionResponse - The CreateSessionResponse message returned by the server
-     * @return Entry representing desired server endpoint and user token policy to access it.
+     * @param extensionObjects Endpoint descriptions returned by the server.
+     * @param contactPoints Contact points expected by client.
+     * @param securityPolicy Security policy searched in endpoints.
+     * @param messageSecurity Message security needed by client.
+     * @return Endpoint matching given.
      */
-    private Entry<EndpointDescription, UserTokenPolicy> selectEndpoint(CreateSessionResponse sessionResponse) {
+    private Entry<EndpointDescription, UserTokenPolicy> selectEndpoint(List<ExtensionObjectDefinition> extensionObjects, Collection<String> contactPoints,
+        SecurityPolicy securityPolicy, MessageSecurity messageSecurity) throws PlcRuntimeException {
         // Get a list of the endpoints which match ours.
-        EndpointDescription selectedEndpoint = null;
-        for (ExtensionObjectDefinition endpoint : sessionResponse.getServerEndpoints()) {
-            if (!(endpoint instanceof EndpointDescription)) {
+        MessageSecurityMode effectiveMessageSecurity = SecurityPolicy.NONE == securityPolicy ? MessageSecurityMode.messageSecurityModeNone : messageSecurity.getMode();
+        List<Entry<EndpointDescription, UserTokenPolicy>> serverEndpoints = new ArrayList<>();
+
+        for (ExtensionObjectDefinition extensionObject : extensionObjects) {
+            if (!(extensionObject instanceof EndpointDescription)) {
                 continue;
             }
-            if (isEndpoint((EndpointDescription) endpoint)) {
-                selectedEndpoint = (EndpointDescription) endpoint;
-                break;
+
+            EndpointDescription endpointDescription = (EndpointDescription) extensionObject;
+            if (isMatchingEndpoint(endpointDescription, contactPoints)) {
+                boolean policyMatch = endpointDescription.getSecurityPolicyUri().getStringValue().equals(securityPolicy.getSecurityPolicyUri());
+                boolean msgSecurityMatch = endpointDescription.getSecurityMode().equals(effectiveMessageSecurity);
+
+                if (!policyMatch && !msgSecurityMatch) {
+                    continue;
+                }
+
+                for (ExtensionObjectDefinition objectDefinition : endpointDescription.getUserIdentityTokens()) {
+                    if (objectDefinition instanceof UserTokenPolicy) {
+                        UserTokenPolicy userTokenPolicy = (UserTokenPolicy) objectDefinition;
+                        if (isUserTokenPolicyCompatible(userTokenPolicy, this.username)) {
+                            serverEndpoints.add(entry(endpointDescription, userTokenPolicy));
+                        }
+                    }
+                }
             }
         }
 
-        for (ExtensionObjectDefinition tokenPolicy : selectedEndpoint.getUserIdentityTokens()) {
-            if (!(tokenPolicy instanceof UserTokenPolicy)) {
-                continue;
-            }
-            if (hasIdentity((UserTokenPolicy) tokenPolicy)) {
-                return entry(selectedEndpoint, (UserTokenPolicy) tokenPolicy);
-            }
+        if (serverEndpoints.isEmpty()) {
+            return null;
         }
 
-        return null;
+        serverEndpoints.sort(Comparator.comparing(e -> e.getKey().getSecurityLevel()));
+        return serverEndpoints.get(0);
     }
 
     /**
@@ -539,36 +551,14 @@ private Entry<EndpointDescription, UserTokenPolicy> selectEndpoint(CreateSession
      * @return true if this endpoint matches our configuration
      * @throws PlcRuntimeException - If the returned endpoint string doesn't match the format expected
      */
-    private boolean isEndpoint(EndpointDescription endpoint) throws PlcRuntimeException {
+    private static boolean isMatchingEndpoint(EndpointDescription endpoint, Collection<String> contactPoints) throws PlcRuntimeException {
         // Split up the connection string into it's individual segments.
-        String endpointUri = endpoint.getEndpointUrl().getStringValue();
-        Matcher matcher = URI_PATTERN.matcher(endpointUri);
-        if (!matcher.matches()) {
-            throw new PlcRuntimeException(
-                "Endpoint " + endpointUri + "  returned from the server doesn't match the format '{protocol-code}:({transport-code})?//{transport-host}(:{transport-port})(/{transport-endpoint})'");
-        }
-        LOGGER.trace("Using Endpoint {} {} {}", matcher.group("transportHost"), matcher.group("transportPort"), matcher.group("transportEndpoint"));
-
-        //When the parameter discovery=false is configured, prefer using the custom address. If the transportEndpoint is empty,
-        // directly replace it with the TransportEndpoint returned by the server.
-        if (!configuration.isDiscovery() && StringUtils.isBlank(driverContext.getTransportEndpoint())) {
-            driverContext.setTransportEndpoint(matcher.group("transportEndpoint"));
-            return true;
-        }
-
-        if (configuration.isDiscovery() && !this.endpoints.contains(matcher.group("transportHost"))) {
-            return false;
-        }
-
-        if (!driverContext.getPort().equals(matcher.group("transportPort"))) {
-            return false;
-        }
-
-        if (!driverContext.getTransportEndpoint().equals(matcher.group("transportEndpoint"))) {
-            return false;
+        for (String contactPoint : contactPoints) {
+            if (endpoint.getEndpointUrl().getStringValue().startsWith(contactPoint)) {
+                return true;
+            }
         }
-
-        return true;
+        return false;
     }
 
     /**
@@ -577,11 +567,11 @@ private boolean isEndpoint(EndpointDescription endpoint) throws PlcRuntimeExcept
      * @param policy - UserTokenPolicy configured for server endpoint.
      * @return True if given token policy matches client configuration.
      */
-    private boolean hasIdentity(UserTokenPolicy policy) {
-        if ((policy.getTokenType() == UserTokenType.userTokenTypeAnonymous) && this.username == null) {
+    private static boolean isUserTokenPolicyCompatible(UserTokenPolicy policy, String username) {
+        if ((policy.getTokenType() == UserTokenType.userTokenTypeAnonymous) && username == null) {
             return true;
         }
-        return policy.getTokenType() == UserTokenType.userTokenTypeUserName && this.username != null;
+        return policy.getTokenType() == UserTokenType.userTokenTypeUserName && username != null;
     }
 
     /**

plc4j/drivers/opcua/src/main/java/org/apache/plc4x/java/opcua/protocol/chunk/ChunkFactory.java

@@ -30,7 +30,8 @@
 
 public class ChunkFactory {
 
-    public static int SYMMETRIC_SECURITY_HEADER_SIZE = 4;
+    public static final int ASYMMETRIC_SECURITY_HEADER_SIZE = 59;
+    public static final int SYMMETRIC_SECURITY_HEADER_SIZE = 4;
 
     public Chunk create(boolean asymmetric, Conversation conversation) {
         return create(asymmetric,
@@ -48,7 +49,7 @@ public Chunk create(boolean asymmetric, boolean encrypted, boolean signed, Secur
 
         if (securityPolicy == SecurityPolicy.NONE) {
             return new Chunk(
-                asymmetric ? 59 : SYMMETRIC_SECURITY_HEADER_SIZE,
+                asymmetric ? ASYMMETRIC_SECURITY_HEADER_SIZE : SYMMETRIC_SECURITY_HEADER_SIZE,
                 1,
                 1,
                 securityPolicy.getSymmetricSignatureSize(),

plc4j/drivers/opcua/src/test/java/org/apache/plc4x/java/opcua/MiloTestContainer.java

@@ -31,11 +31,13 @@ public class MiloTestContainer extends GenericContainer<MiloTestContainer> {
 
     private final static Logger logger = LoggerFactory.getLogger(MiloTestContainer.class);
 
+    private final static ImageFromDockerfile IMAGE = inlineImage();
+
     public MiloTestContainer() {
-        super(inlineImage());
+        super(IMAGE);
 
         waitingFor(Wait.forLogMessage("Server started\\s*", 1));
-        addFixedExposedPort(12686, 12686);
+        addExposedPort(12686);
     }
 
     private static ImageFromDockerfile inlineImage() {