#168 implemented Docker.execs()

src/main/java/com/amihaiemil/docker/Execs.java

@@ -32,5 +32,19 @@
  * @version $Id$
  * @since 0.0.12
  */
-public interface Execs extends Iterable<Exec> {
+public interface Execs {
+
+    /**
+     * Get the Exec with the specified ID.
+     * @param execId The ID of the searched Exec.
+     * @return Exec.
+     */
+    Exec get(final String execId);
+
+    /**
+     * Return the Docker engine where these Execs came from.
+     * @return Docker.
+     */
+    Docker docker();
+
 }

src/main/java/com/amihaiemil/docker/RtDocker.java

@@ -123,9 +123,9 @@ public final Volumes volumes() {
 
     @Override
     public final Execs execs() {
-        throw new UnsupportedOperationException(
-            "Exec API is not yet implemented. If you can contribute please,"
-            + " do it here: https://www.github.com/amihaiemil/docker-java-api"
+        return new RtExecs(
+            URI.create(this.baseUri.toString() + "/exec"),
+            this
         );
     }
 

src/main/java/com/amihaiemil/docker/RtExecs.java

@@ -0,0 +1,68 @@
+/**
+ * Copyright (c) 2018-2020, Mihai Emil Andronache
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1)Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2)Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3)Neither the name of docker-java-api nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+package com.amihaiemil.docker;
+
+import java.net.URI;
+
+/**
+ * RESTful Execs API.
+ * @author Mihai Andronache (amihaiemil@gmail.com)
+ * @version $Id$
+ * @since 0.0.12
+ */
+final class RtExecs implements Execs {
+
+    /**
+     * Base URI for Images API.
+     */
+    private final URI baseUri;
+
+    /**
+     * Docker API.
+     */
+    private final Docker docker;
+
+    /**
+     * Ctor.
+     * @param uri The URI for this Images API.
+     * @param dkr The docker entry point.
+     * @checkstyle ParameterNumber (10 lines)
+     */
+    RtExecs(final URI uri, final Docker dkr) {
+        this.baseUri = uri;
+        this.docker = dkr;
+    }
+
+    @Override
+    public Exec get(final String execId) {
+        return null;
+    }
+
+    @Override
+    public Docker docker() {
+        return this.docker;
+    }
+}

src/test/java/com/amihaiemil/docker/LocalDockerTestCase.java

@@ -170,13 +170,16 @@ public void returnsNetworks() {
     }
 
     /**
-     * LocalUnixDocker throws UnsupportedOperationException for Exec.
+     * LocalUnixDocker can return Execs.
      */
-    @Test(expected = UnsupportedOperationException.class)
-    public void unsupportedOperationExec() {
-        new LocalDocker(
-            new File("/var/run/docker.sock")
-        ).execs();
+    @Test
+    public void returnsExecs() {
+        MatcherAssert.assertThat(
+            new LocalDocker(
+                new File("/var/run/docker.sock")
+            ).execs(),
+            Matchers.notNullValue()
+        );
     }
 
     /**

src/test/java/com/amihaiemil/docker/UnixDockerTestCase.java

@@ -170,14 +170,16 @@ public void returnsNetworks() {
     }
 
     /**
-     * UnixDocker throws UnsupportedOperationException for Exec.
+     * UnixDocker can return Execs.
      */
-    @Test(expected = UnsupportedOperationException.class)
-    public void unsupportedOperationExec() {
-        new UnixDocker(
-            new File(
-                    "/var/run/docker.sock")
-        ).execs();
+    @Test
+    public void returnsExecs() {
+        MatcherAssert.assertThat(
+            new UnixDocker(
+                new File("/var/run/docker.sock")
+            ).execs(),
+            Matchers.notNullValue()
+        );
     }
 
     /**