Cannot pause Windows Server Containers

Author: gesellix

api-client/src/test/java/de/gesellix/docker/remote/api/client/ContainerApiIntegrationTest.java

@@ -16,6 +16,7 @@
 import de.gesellix.docker.remote.api.core.LoggingExtensionsKt;
 import de.gesellix.docker.remote.api.core.StreamCallback;
 import de.gesellix.docker.remote.api.testutil.DisabledIfDaemonOnWindowsOs;
+import de.gesellix.docker.remote.api.testutil.DisabledIfNotPausable;
 import de.gesellix.docker.remote.api.testutil.DockerEngineAvailable;
 import de.gesellix.docker.remote.api.testutil.Failsafe;
 import de.gesellix.docker.remote.api.testutil.InjectDockerClient;
@@ -470,6 +471,7 @@ public void containerKill() {
     removeContainer(engineApiClient, "container-kill-test");
   }
 
+  @DisabledIfNotPausable
   @Test
   public void containerPauseUnpause() {
     imageApi.imageCreate(testImage.getImageName(), null, null, testImage.getImageTag(), null, null, null, null, null);

api-client/src/test/java/de/gesellix/docker/remote/api/testutil/DisabledIfNotPausable.java

@@ -0,0 +1,54 @@
+package de.gesellix.docker.remote.api.testutil;
+
+import de.gesellix.docker.remote.api.EngineApiClient;
+import de.gesellix.docker.remote.api.EngineApiClientImpl;
+import de.gesellix.docker.remote.api.SystemInfo;
+import org.junit.jupiter.api.extension.ConditionEvaluationResult;
+import org.junit.jupiter.api.extension.ExecutionCondition;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.api.extension.ExtensionContext;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.util.Objects;
+
+import static org.junit.jupiter.api.extension.ConditionEvaluationResult.disabled;
+import static org.junit.jupiter.api.extension.ConditionEvaluationResult.enabled;
+
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+@ExtendWith(DisabledIfNotPausable.WindowsContainerPausableCondition.class)
+public @interface DisabledIfNotPausable {
+
+  class WindowsContainerPausableCondition implements ExecutionCondition {
+
+    private final EngineApiClient engineApiClient;
+
+    public WindowsContainerPausableCondition() {
+      engineApiClient = new EngineApiClientImpl();
+    }
+
+    @Override
+    public ConditionEvaluationResult evaluateExecutionCondition(ExtensionContext context) {
+      return isPausable()
+             ? enabled("Enabled: Non-Windows Server daemon detected")
+             : disabled("Disabled: cannot pause Windows Server Containers");
+    }
+
+    public boolean isPausable() {
+      SystemInfo systemInfo = engineApiClient.getSystemApi().systemInfo();
+      return !isWindowsDaemon(systemInfo) || !isDaemonIsolationByProcess(systemInfo);
+    }
+
+    public boolean isDaemonIsolationByProcess(SystemInfo systemInfo) {
+      return systemInfo.getIsolation() == SystemInfo.Isolation.Process;
+    }
+
+    public boolean isWindowsDaemon(SystemInfo systemInfo) {
+      return Objects.requireNonNull(systemInfo.getOsType())
+          .equalsIgnoreCase("windows");
+    }
+  }
+}