1 files changed, 112 insertions, 0 deletions
diff --git a/dhcp/dhcp-impl/src/main/java/io/fd/hc2vpp/dhcp/write/DhcpRelayValidator.java b/dhcp/dhcp-impl/src/main/java/io/fd/hc2vpp/dhcp/write/DhcpRelayValidator.java
new file mode 100644
index 000000000..b9f093455
--- /dev/null
+++ b/dhcp/dhcp-impl/src/main/java/io/fd/hc2vpp/dhcp/write/DhcpRelayValidator.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2019 PANTHEON.tech.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.hc2vpp.dhcp.write;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.annotations.VisibleForTesting;
+import io.fd.honeycomb.translate.write.DataValidationFailedException.CreateValidationFailedException;
+import io.fd.honeycomb.translate.write.DataValidationFailedException.DeleteValidationFailedException;
+import io.fd.honeycomb.translate.write.DataValidationFailedException.UpdateValidationFailedException;
+import io.fd.honeycomb.translate.write.Validator;
+import io.fd.honeycomb.translate.write.WriteContext;
+import javax.annotation.Nonnull;
+import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.dhcp.attributes.relays.Relay;
+import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.dhcp.rev180629.relay.attributes.Server;
+import org.opendaylight.yang.gen.v1.http.fd.io.hc2vpp.yang.vpp.fib.table.management.rev180521.Ipv6;
+import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev130715.IpAddressNoZone;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class DhcpRelayValidator implements Validator<Relay> {
+
+    @Override
+    public void validateWrite(@Nonnull final InstanceIdentifier<Relay> id,
+                              @Nonnull final Relay relay,
+                              @Nonnull final WriteContext writeContext)
+            throws CreateValidationFailedException {
+        try {
+            validateRelay(relay);
+        } catch (RuntimeException e) {
+            throw new CreateValidationFailedException(id, relay, e);
+        }
+    }
+
+    @Override
+    public void validateUpdate(@Nonnull final InstanceIdentifier<Relay> id,
+                               @Nonnull final Relay dataBefore,
+                               @Nonnull final Relay dataAfter,
+                               @Nonnull final WriteContext writeContext)
+            throws UpdateValidationFailedException {
+        try {
+            validateRelay(dataBefore);
+            validateRelay(dataAfter);
+        } catch (RuntimeException e) {
+            throw new UpdateValidationFailedException(id, dataBefore, dataAfter, e);
+        }
+    }
+
+    @Override
+    public void validateDelete(@Nonnull final InstanceIdentifier<Relay> id, @Nonnull final Relay dataBefore,
+                               @Nonnull final WriteContext writeContext)
+            throws DeleteValidationFailedException {
+        try {
+            validateRelay(dataBefore);
+        } catch (RuntimeException e) {
+            throw new DeleteValidationFailedException(id, e);
+        }
+    }
+
+    @VisibleForTesting
+    void validateRelay(final Relay relay) {
+        final boolean isIpv6 = Ipv6.class == relay.getAddressFamily();
+        try {
+            isAddressCorrect(relay.getGatewayAddress(), isIpv6);
+        } catch (IllegalArgumentException e) {
+            throw new IllegalArgumentException(String.format("Gateway address validation error: %s", e.getMessage()));
+        }
+
+        checkArgument(relay.getServer() != null && !relay.getServer().isEmpty(),
+                "At least one DHCP server needs to be configured");
+        for (final Server server : relay.getServer()) {
+            validateServer(server, isIpv6);
+        }
+    }
+
+    private void validateServer(final Server server, boolean isIpv6) {
+        try {
+            isAddressCorrect(server.getAddress(), isIpv6);
+        } catch (IllegalArgumentException e) {
+            throw new IllegalArgumentException(
+                    String.format("Server address %s validation error: %s", server.getAddress().stringValue(),
+                            e.getMessage()));
+        }
+    }
+
+    private void isAddressCorrect(final IpAddressNoZone address, final boolean isIpv6) {
+        if (isIpv6) {
+            checkArgument(address.getIpv6AddressNoZone() != null,
+                    "Ipv6 address was expected but was not found.");
+            checkArgument(address.getIpv4AddressNoZone() == null,
+                    "Only Ipv6 address was expected but Ipv4 was found");
+        } else {
+            checkArgument(address.getIpv4AddressNoZone() != null,
+                    "Ipv4 address was expected but was not found.");
+            checkArgument(address.getIpv6AddressNoZone() == null,
+                    "Only Ipv4 address was expected but Ipv6 was found");
+        }
+    }
+}