Add experimental support for IPv6

Fixes: #77

README.md

@@ -92,6 +92,8 @@ Following attributes are **required** for each server template:
   In both cases, selection of IP address can be specified as one of
     - `Connect using private IPv4 address if available, otherwise using public IPv4 address`
     - `Connect using public IPv4 address only`
+    - `Connect using public IPv6 address only`
+
 - `Labels` - Labels that identifies jobs that could run on node created from this template.
   Multiple values can be specified when separated by space.
   When no labels are specified and usage mode is set to <strong>Use this node as much as possible</strong>,
@@ -138,9 +140,13 @@ These additional attributes can be specified, but are not required:
     If no address is available or any error occurs, problem is logged, but provisioning of agent will continue without Primary IP being allocated.
 
 - `Connectivity` - defines how network connectivity will be configured on newly created server
-  - `Only private networking will be used` - network ID or labels expression must also be provided
-  - `Only public networking will be allocated` - public IP address will be allocated to the server
-  - `Configure both private and public networking`
+  - `Only private networking will be used` - network ID or labels expression must be provided
+  - `Only public networking will be allocated` - public IPv4/IPv6 addresses will be allocated to the server
+  - `Only public IPv6 networking will be allocated` - public IPv6 address will be allocated to the server
+  - `Configure both private and public networking` - public IPv4/IPv6 addresses will be allocated. Network ID or labels expression must be provided.
+  - `Configure both private and public IPv6 networking` - public IPv6 address will be allocated. Network ID or labels expression must be provided.
+
+  Make sure this field is aligned with `Connection method`.
 
 - `Automount volumes` - Auto-mount volumes after attach.
 

pom.xml

@@ -127,7 +127,7 @@
         <dependency>
             <groupId>cloud.dnation.integration</groupId>
             <artifactId>hetzner-cloud-client-java</artifactId>
-            <version>1.7.0</version>
+            <version>1.8.0</version>
         </dependency>
         <dependency>
             <groupId>org.jenkins-ci.plugins</groupId>

src/main/java/cloud/dnation/jenkins/plugins/hetzner/HetznerCloudResourceManager.java

@@ -44,6 +44,7 @@
 import hudson.util.Secret;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
 import retrofit2.Call;
 import retrofit2.Response;
@@ -56,6 +57,7 @@
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
+import java.util.function.BiConsumer;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -231,6 +233,55 @@ public HetznerServerInfo refreshServerInfo(HetznerServerInfo info) {
         }
     }
 
+    @SneakyThrows
+    private void configurePrivateNetwork(CreateServerRequest req, String network) {
+        if (!Strings.isNullOrEmpty(network)) {
+            final long networkId;
+            if (Helper.isPossiblyLong(network)) {
+                networkId = Long.parseLong(network);
+            } else {
+                networkId = getNetworkIdForLabelExpression(network);
+            }
+            req.setNetworks(Lists.newArrayList(networkId));
+        }
+    }
+
+    @VisibleForTesting
+    static void customizeNetworking(ConnectivityType ct, CreateServerRequest req, String network,
+                             BiConsumer<CreateServerRequest, String> privateNetConfig) throws IOException {
+        req.setPublicNet(new PublicNetRequest());
+        req.getPublicNet().setEnableIpv4(false);
+        req.getPublicNet().setEnableIpv6(false);
+        switch (ct) {
+            case PRIVATE:
+                privateNetConfig.accept(req, network);
+                break;
+
+            case BOTH:
+                req.getPublicNet().setEnableIpv4(true);
+                req.getPublicNet().setEnableIpv6(true);
+                privateNetConfig.accept(req, network);
+                break;
+
+            case BOTH_V6:
+                req.getPublicNet().setEnableIpv6(true);
+                privateNetConfig.accept(req, network);
+                break;
+
+            case PUBLIC:
+                req.getPublicNet().setEnableIpv4(true);
+                req.getPublicNet().setEnableIpv6(true);
+                break;
+
+            case PUBLIC_V6:
+                req.getPublicNet().setEnableIpv6(true);
+                break;
+
+            default:
+                throw new IllegalArgumentException("Unknown connectivity type: " + ct);
+        }
+    }
+
     /**
      * Create new server instance.
      *
@@ -258,23 +309,8 @@ public HetznerServerInfo createServer(HetznerServerAgent agent) {
                 createServerRequest.setVolumes(Helper.idList(agent.getTemplate().getVolumeIds()));
             }
             final ConnectivityType ct = agent.getTemplate().getConnectivity().getType();
-            if (ct == ConnectivityType.BOTH || ct == ConnectivityType.PRIVATE) {
-                if (!Strings.isNullOrEmpty(agent.getTemplate().getNetwork())) {
-                    final long networkId;
-                    if (Helper.isPossiblyLong(agent.getTemplate().getNetwork())) {
-                        networkId = Long.parseLong(agent.getTemplate().getNetwork());
-                    } else {
-                        networkId = getNetworkIdForLabelExpression(agent.getTemplate().getNetwork());
-                    }
-                    if (ct == ConnectivityType.PRIVATE) {
-                        final PublicNetRequest pn = new PublicNetRequest();
-                        pn.setEnableIpv4(false);
-                        pn.setEnableIpv6(false);
-                        createServerRequest.setPublicNet(pn);
-                    }
-                    createServerRequest.setNetworks(Lists.newArrayList(networkId));
-                }
-            }
+            customizeNetworking(ct, createServerRequest, agent.getTemplate().getNetwork(),
+                    this::configurePrivateNetwork);
             final String placementGroup = agent.getTemplate().getPlacementGroup();
             if (!Strings.isNullOrEmpty(placementGroup)) {
                 if(Helper.isPossiblyLong(placementGroup)) {
@@ -296,9 +332,10 @@ public HetznerServerInfo createServer(HetznerServerAgent agent) {
                 createServerRequest.setLocation(agent.getTemplate().getLocation());
             }
             createServerRequest.setLabels(createLabelsForServer(agent.getTemplate().getCloud().name));
-            if (ct == ConnectivityType.BOTH || ct == ConnectivityType.PUBLIC) {
+            if (ct == ConnectivityType.BOTH || ct == ConnectivityType.PUBLIC_V6 || ct == ConnectivityType.PUBLIC) {
                 Optional.of(agent.getTemplate().getPrimaryIp()).ifPresent(ip -> ip.apply(proxy(), createServerRequest));
             }
+            log.debug("Calling API to create server resource : {}", createServerRequest);
             final Response<CreateServerResponse> createServerResponse = proxy().createServer(createServerRequest)
                     .execute();
             final HetznerServerInfo info = new HetznerServerInfo(sshKey);

src/main/java/cloud/dnation/jenkins/plugins/hetzner/connect/BothV6.java

@@ -0,0 +1,41 @@
+/*
+ *     Copyright 2024 https://dnation.cloud
+ *
+ * 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 cloud.dnation.jenkins.plugins.hetzner.connect;
+
+import cloud.dnation.jenkins.plugins.hetzner.Messages;
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.Descriptor;
+import lombok.NoArgsConstructor;
+import org.jenkinsci.Symbol;
+import org.kohsuke.stapler.DataBoundConstructor;
+
+@NoArgsConstructor(onConstructor = @__({@DataBoundConstructor}))
+public class BothV6 extends AbstractConnectivity{
+    public ConnectivityType getType() {
+        return ConnectivityType.BOTH_V6;
+    }
+
+    @Extension
+    @Symbol("both-v6")
+    public static final class DescriptorImpl extends Descriptor<AbstractConnectivity> {
+        @NonNull
+        @Override
+        public String getDisplayName() {
+            return Messages.connectivity_bothV6();
+        }
+    }
+}

src/main/java/cloud/dnation/jenkins/plugins/hetzner/connect/ConnectivityType.java

@@ -18,5 +18,7 @@
 public enum ConnectivityType {
     PRIVATE,
     PUBLIC,
-    BOTH
+    PUBLIC_V6,
+    BOTH,
+    BOTH_V6
 }

src/main/java/cloud/dnation/jenkins/plugins/hetzner/connect/PublicV6Only.java

@@ -0,0 +1,41 @@
+/*
+ *     Copyright 2024 https://dnation.cloud
+ *
+ * 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 cloud.dnation.jenkins.plugins.hetzner.connect;
+
+import cloud.dnation.jenkins.plugins.hetzner.Messages;
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.Descriptor;
+import lombok.NoArgsConstructor;
+import org.jenkinsci.Symbol;
+import org.kohsuke.stapler.DataBoundConstructor;
+
+@NoArgsConstructor(onConstructor = @__({@DataBoundConstructor}))
+public class PublicV6Only extends AbstractConnectivity {
+    public ConnectivityType getType() {
+        return ConnectivityType.PUBLIC_V6;
+    }
+
+    @Extension
+    @Symbol("publicV6-only")
+    public static final class DescriptorImpl extends Descriptor<AbstractConnectivity> {
+        @NonNull
+        @Override
+        public String getDisplayName() {
+            return Messages.connectivity_publicV6_only();
+        }
+    }
+}

src/main/java/cloud/dnation/jenkins/plugins/hetzner/launcher/PublicV6AddressOnly.java

@@ -0,0 +1,48 @@
+/*
+ *     Copyright 2024 https://dnation.cloud
+ *
+ * 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 cloud.dnation.jenkins.plugins.hetzner.launcher;
+
+import cloud.dnation.hetznerclient.ServerDetail;
+import cloud.dnation.jenkins.plugins.hetzner.Messages;
+import com.google.common.base.Strings;
+import edu.umd.cs.findbugs.annotations.NonNull;
+import hudson.Extension;
+import hudson.model.Descriptor;
+import lombok.NoArgsConstructor;
+import org.jenkinsci.Symbol;
+import org.kohsuke.stapler.DataBoundConstructor;
+
+@NoArgsConstructor(onConstructor = @__({@DataBoundConstructor}))
+public class PublicV6AddressOnly extends AbstractConnectionMethod {
+    @Override
+    public String getAddress(ServerDetail server) {
+        if (server.getPublicNet().getIpv6() == null || Strings.isNullOrEmpty(server.getPublicNet().getIpv6().getIp())) {
+            throw new IllegalArgumentException("Connection method requires IPv6 address");
+        }
+        // value returned by API ends with "::/64" so replace it with "1"
+        return server.getPublicNet().getIpv6().getIp().replaceFirst("::/64$", "::1");
+    }
+
+    @Extension
+    @Symbol("publicV6")
+    public static final class DescriptorImpl extends Descriptor<AbstractConnectionMethod> {
+        @NonNull
+        @Override
+        public String getDisplayName() {
+            return Messages.connection_method_publicV6();
+        }
+    }
+}

src/main/resources/cloud/dnation/jenkins/plugins/hetzner/HetznerServerComputer/main.jelly

@@ -64,6 +64,10 @@
                     <th>Public IPv4 address</th>
                     <td>${instance.publicNet.ipv4.ip}</td>
                 </tr>
+                <tr>
+                    <th>Public IPv6 address</th>
+                    <td>${instance.publicNet.ipv6.ip}</td>
+                </tr>
                 <j:choose>
                     <j:when test="${instance.privateNet != null and instance.privateNet.size() == 1}">
                         <tr>

src/main/resources/cloud/dnation/jenkins/plugins/hetzner/Messages.properties

@@ -26,6 +26,9 @@ primaryip.bylabelselector.failing=Allocate primary IPv4 using label selector, fa
 primaryip.bylabelselector.ignoring=Allocate primary IPv4 using label selector, ignore any error
 connection.method.default=Connect using private IPv4 address if available, otherwise using public IPv4 address
 connection.method.public=Connect using public IPv4 address only
+connection.method.publicV6=Connect using public IPv6 address only
 connectivity.private-only=Only private networking will be used. Network ID or label expression must be provided as well.
 connectivity.public-only=Only public networking will be allocated
-connectivity.both=Configure both private and public networking. Additional constrains may apply
+connectivity.publicV6-only=Only public IPv6 networking will be allocated
+connectivity.both=Configure both private and public networking. Additional constrains may apply
+connectivity.bothV6=Configure both private network and public IPv6. Additional constrains may apply

src/test/java/cloud/dnation/jenkins/plugins/hetzner/HetznerCloudResourceManagerTest.java

@@ -0,0 +1,62 @@
+/*
+ *     Copyright 2024 https://dnation.cloud
+ *
+ * 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 cloud.dnation.jenkins.plugins.hetzner;
+
+import cloud.dnation.hetznerclient.CreateServerRequest;
+import cloud.dnation.jenkins.plugins.hetzner.connect.ConnectivityType;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static cloud.dnation.jenkins.plugins.hetzner.HetznerCloudResourceManager.customizeNetworking;
+import static org.junit.Assert.assertEquals;
+
+public class HetznerCloudResourceManagerTest {
+    @Test
+    public void testCustomizeNetworking() throws IOException {
+        CreateServerRequest req;
+
+        req = new CreateServerRequest();
+        customizeNetworking(ConnectivityType.BOTH, req, "", (s1, s2) -> {
+        });
+        assertEquals(true, req.getPublicNet().getEnableIpv4());
+        assertEquals(true, req.getPublicNet().getEnableIpv6());
+
+        req = new CreateServerRequest();
+        customizeNetworking(ConnectivityType.BOTH_V6, req, "", (s1, s2) -> {
+        });
+        assertEquals(false, req.getPublicNet().getEnableIpv4());
+        assertEquals(true, req.getPublicNet().getEnableIpv6());
+
+        req = new CreateServerRequest();
+        customizeNetworking(ConnectivityType.PUBLIC, req, "", (s1, s2) -> {
+        });
+        assertEquals(true, req.getPublicNet().getEnableIpv4());
+        assertEquals(true, req.getPublicNet().getEnableIpv6());
+
+        req = new CreateServerRequest();
+        customizeNetworking(ConnectivityType.PUBLIC_V6, req, "", (s1, s2) -> {
+        });
+        assertEquals(false, req.getPublicNet().getEnableIpv4());
+        assertEquals(true, req.getPublicNet().getEnableIpv6());
+
+        req = new CreateServerRequest();
+        customizeNetworking(ConnectivityType.PRIVATE, req, "", (s1, s2) -> {
+        });
+        assertEquals(false, req.getPublicNet().getEnableIpv4());
+        assertEquals(false, req.getPublicNet().getEnableIpv6());
+    }
+}