add generateName to devfile metadata

core/che-core-api-model/src/main/java/org/eclipse/che/api/core/model/workspace/devfile/Metadata.java

@@ -16,4 +16,7 @@ public interface Metadata {
 
   /** @return the name of the devfile */
   String getName();
+
+  /** 'generateName' is used as a base string for generated name, when 'name' is not defined. */
+  String getGenerateName();
 }

wsmaster/che-core-api-workspace-shared/src/main/java/org/eclipse/che/api/workspace/shared/Constants.java

@@ -195,5 +195,8 @@ public final class Constants {
   /** Attribute of {@link Server} that specifies exposure of which port created the server */
   public static final String SERVER_PORT_ATTRIBUTE = "port";
 
+  /** When generating workspace name from generateName, append this many characters. */
+  public static final int WORKSPACE_GENERATE_NAME_CHARS_APPEND = 5;
+
   private Constants() {}
 }

wsmaster/che-core-api-workspace-shared/src/main/java/org/eclipse/che/api/workspace/shared/dto/devfile/MetadataDto.java

@@ -23,4 +23,6 @@ public interface MetadataDto extends Metadata {
   void setName(String name);
 
   MetadataDto withName(String name);
+
+  MetadataDto withGenerateName(String generateName);
 }

wsmaster/che-core-api-workspace/src/main/java/org/eclipse/che/api/workspace/server/WorkspaceManager.java

@@ -23,6 +23,7 @@
 import static org.eclipse.che.api.workspace.shared.Constants.STOPPED_ABNORMALLY_ATTRIBUTE_NAME;
 import static org.eclipse.che.api.workspace.shared.Constants.STOPPED_ATTRIBUTE_NAME;
 import static org.eclipse.che.api.workspace.shared.Constants.UPDATED_ATTRIBUTE_NAME;
+import static org.eclipse.che.api.workspace.shared.Constants.WORKSPACE_GENERATE_NAME_CHARS_APPEND;
 
 import com.google.inject.Inject;
 import java.util.Collections;
@@ -48,11 +49,14 @@
 import org.eclipse.che.api.workspace.server.model.impl.WorkspaceConfigImpl;
 import org.eclipse.che.api.workspace.server.model.impl.WorkspaceImpl;
 import org.eclipse.che.api.workspace.server.model.impl.devfile.DevfileImpl;
+import org.eclipse.che.api.workspace.server.model.impl.devfile.MetadataImpl;
 import org.eclipse.che.api.workspace.server.spi.WorkspaceDao;
+import org.eclipse.che.api.workspace.shared.Constants;
 import org.eclipse.che.api.workspace.shared.event.WorkspaceCreatedEvent;
 import org.eclipse.che.commons.annotation.Nullable;
 import org.eclipse.che.commons.annotation.Traced;
 import org.eclipse.che.commons.env.EnvironmentContext;
+import org.eclipse.che.commons.lang.NameGenerator;
 import org.eclipse.che.commons.subject.Subject;
 import org.eclipse.che.commons.tracing.TracingTags;
 import org.slf4j.Logger;
@@ -159,6 +163,8 @@ public WorkspaceImpl createWorkspace(
     requireNonNull(namespace, "Required non-null namespace");
     validator.validateAttributes(attributes);
 
+    devfile = generateNameIfNeeded(devfile);
+
     try {
       devfileIntegrityValidator.validateContentReferences(devfile, contentProvider);
     } catch (DevfileFormatException e) {
@@ -569,6 +575,26 @@ private WorkspaceImpl doCreateWorkspace(
     return workspace;
   }
 
+  /**
+   * If 'generateName' is defined and 'name' is not, we generate name using 'generateName' as a
+   * prefix following {@link Constants#WORKSPACE_GENERATE_NAME_CHARS_APPEND} random characters and
+   * set it to 'name'.
+   */
+  private Devfile generateNameIfNeeded(Devfile origDevfile) {
+    if (origDevfile.getMetadata() != null) {
+      MetadataImpl metadata = new MetadataImpl(origDevfile.getMetadata());
+      if (metadata.getName() == null && metadata.getGenerateName() != null) {
+        metadata.setName(
+            NameGenerator.generate(
+                metadata.getGenerateName(), WORKSPACE_GENERATE_NAME_CHARS_APPEND));
+        DevfileImpl devfileWithGeneratedName = new DevfileImpl(origDevfile);
+        devfileWithGeneratedName.setMetadata(metadata);
+        return devfileWithGeneratedName;
+      }
+    }
+    return origDevfile;
+  }
+
   private WorkspaceImpl getByKey(String key) throws NotFoundException, ServerException {
 
     int lastColonIndex = key.indexOf(":");

wsmaster/che-core-api-workspace/src/main/java/org/eclipse/che/api/workspace/server/model/impl/devfile/MetadataImpl.java

@@ -14,6 +14,7 @@
 import java.util.Objects;
 import javax.persistence.Column;
 import javax.persistence.Embeddable;
+import javax.persistence.Transient;
 import org.eclipse.che.api.core.model.workspace.devfile.Metadata;
 
 @Embeddable
@@ -22,6 +23,12 @@ public class MetadataImpl implements Metadata {
   @Column(name = "meta_name")
   private String name;
 
+  /**
+   * generateName is used just at workspace create time, when name is generated from it and stored
+   * into {@link MetadataImpl#name}, thus it's not needed to persist
+   */
+  @Transient private String generateName;
+
   public MetadataImpl() {}
 
   public MetadataImpl(String name) {
@@ -30,6 +37,7 @@ public MetadataImpl(String name) {
 
   public MetadataImpl(Metadata metadata) {
     this.name = metadata.getName();
+    this.generateName = metadata.getGenerateName();
   }
 
   @Override
@@ -41,6 +49,15 @@ public void setName(String name) {
     this.name = name;
   }
 
+  @Override
+  public String getGenerateName() {
+    return generateName;
+  }
+
+  public void setGenerateName(String generateName) {
+    this.generateName = generateName;
+  }
+
   @Override
   public boolean equals(Object o) {
     if (this == o) {
@@ -50,16 +67,24 @@ public boolean equals(Object o) {
       return false;
     }
     MetadataImpl metadata = (MetadataImpl) o;
-    return name.equals(metadata.name);
+    return Objects.equals(name, metadata.name)
+        && Objects.equals(generateName, metadata.generateName);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(name);
+    return Objects.hash(name, generateName);
   }
 
   @Override
   public String toString() {
-    return "MetadataImpl{'name='" + name + '\'' + '}';
+    return "MetadataImpl{"
+        + "name='"
+        + name
+        + '\''
+        + ", generateName='"
+        + generateName
+        + '\''
+        + '}';
   }
 }

wsmaster/che-core-api-workspace/src/main/resources/schema/devfile.json

@@ -50,10 +50,26 @@
           "examples": [
             "petclinic-dev-environment"
           ]
+        },
+        "generateName": {
+          "type": "string",
+          "minLength": 1,
+          "title": "Devfile Generate Name",
+          "description": "Workspaces created from devfile, will use it as base and append random suffix. It's used when name is not defined.",
+          "examples": [
+            "petclinic-"
+          ]
         }
       },
       "additionalProperties": false,
-      "required": ["name"]
+      "anyOf": [
+        {
+          "required": ["name"]
+        },
+        {
+          "required": ["generateName"]
+        }
+      ]
     },
     "projects": {
       "type": "array",

wsmaster/che-core-api-workspace/src/test/java/org/eclipse/che/api/workspace/server/WorkspaceManagerTest.java

@@ -20,11 +20,13 @@
 import static org.eclipse.che.api.core.model.workspace.WorkspaceStatus.STARTING;
 import static org.eclipse.che.api.core.model.workspace.WorkspaceStatus.STOPPED;
 import static org.eclipse.che.api.core.model.workspace.config.MachineConfig.MEMORY_LIMIT_ATTRIBUTE;
+import static org.eclipse.che.api.workspace.server.devfile.Constants.CURRENT_API_VERSION;
 import static org.eclipse.che.api.workspace.shared.Constants.CREATED_ATTRIBUTE_NAME;
 import static org.eclipse.che.api.workspace.shared.Constants.ERROR_MESSAGE_ATTRIBUTE_NAME;
 import static org.eclipse.che.api.workspace.shared.Constants.STOPPED_ABNORMALLY_ATTRIBUTE_NAME;
 import static org.eclipse.che.api.workspace.shared.Constants.STOPPED_ATTRIBUTE_NAME;
 import static org.eclipse.che.api.workspace.shared.Constants.UPDATED_ATTRIBUTE_NAME;
+import static org.eclipse.che.api.workspace.shared.Constants.WORKSPACE_GENERATE_NAME_CHARS_APPEND;
 import static org.eclipse.che.dto.server.DtoFactory.newDto;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
@@ -177,6 +179,44 @@ public void createsWorkspace() throws Exception {
     verify(workspaceDao).create(workspace);
   }
 
+  @Test
+  public void createsWorkspaceFromDevfile()
+      throws ValidationException, ConflictException, NotFoundException, ServerException {
+    final DevfileImpl devfile = new DevfileImpl();
+    devfile.setApiVersion(CURRENT_API_VERSION);
+    devfile.setName("ws");
+    Workspace workspace = workspaceManager.createWorkspace(devfile, NAMESPACE_1, null, null);
+    assertEquals(workspace.getDevfile(), devfile);
+  }
+
+  @Test
+  public void createsWorkspaceFromDevfileWithGenerateName()
+      throws ValidationException, ConflictException, NotFoundException, ServerException {
+    final String testDevfileGenerateName = "ws-";
+    final DevfileImpl devfile = new DevfileImpl();
+    devfile.setApiVersion(CURRENT_API_VERSION);
+    devfile.getMetadata().setGenerateName(testDevfileGenerateName);
+    Workspace workspace = workspaceManager.createWorkspace(devfile, NAMESPACE_1, null, null);
+
+    assertTrue(workspace.getDevfile().getName().startsWith(testDevfileGenerateName));
+    assertEquals(
+        workspace.getDevfile().getName().length(),
+        testDevfileGenerateName.length() + WORKSPACE_GENERATE_NAME_CHARS_APPEND);
+  }
+
+  @Test
+  public void nameIsUsedWhenNameAndGenerateNameSet()
+      throws ValidationException, ConflictException, NotFoundException, ServerException {
+    final String devfileName = "workspacename";
+    final DevfileImpl devfile = new DevfileImpl();
+    devfile.setApiVersion(CURRENT_API_VERSION);
+    devfile.getMetadata().setName(devfileName);
+    devfile.getMetadata().setGenerateName("this_will_not_be_set_as_a_name");
+    Workspace workspace = workspaceManager.createWorkspace(devfile, NAMESPACE_1, null, null);
+
+    assertEquals(workspace.getDevfile().getName(), devfileName);
+  }
+
   @Test
   public void getsWorkspaceByIdWithoutRuntime() throws Exception {
     WorkspaceImpl workspace = createAndMockWorkspace();

wsmaster/che-core-api-workspace/src/test/java/org/eclipse/che/api/workspace/server/devfile/validator/DevfileSchemaValidatorTest.java

@@ -64,7 +64,9 @@ public Object[][] validDevfiles() {
       {"dockerimage_component/devfile_dockerimage_component_without_entry_point.yaml"},
       {"editor_plugin_component/devfile_editor_component_with_custom_registry.yaml"},
       {"editor_plugin_component/devfile_editor_plugins_components_with_memory_limit.yaml"},
-      {"editor_plugin_component/devfile_plugin_component_with_reference.yaml"}
+      {"editor_plugin_component/devfile_plugin_component_with_reference.yaml"},
+      {"devfile/devfile_just_generatename.yaml"},
+      {"devfile/devfile_name_and_generatename.yaml"}
     };
   }
 
@@ -89,7 +91,7 @@ public Object[][] invalidDevfiles() {
       // Devfile model testing
       {
         "devfile/devfile_empty_metadata.yaml",
-        "(/metadata):The object must have a property whose name is \"name\"."
+        "At least one of the following sets of problems must be resolved.: [(/metadata):The object must have a property whose name is \"name\".(/metadata):The object must have a property whose name is \"generateName\".]"
       },
       {
         "devfile/devfile_null_metadata.yaml",
@@ -100,8 +102,8 @@ public Object[][] invalidDevfiles() {
         "The object must have a property whose name is \"metadata\"."
       },
       {
-        "devfile/devfile_missing_name.yaml",
-        "(/metadata/something):The object must not have a property whose name is \"something\".(/metadata):The object must have a property whose name is \"name\"."
+        "devfile/devfile_missing_name_and_generatename.yaml",
+        "(/metadata/something):The object must not have a property whose name is \"something\".At least one of the following sets of problems must be resolved.: [(/metadata):The object must have a property whose name is \"name\".(/metadata):The object must have a property whose name is \"generateName\".]"
       },
       {
         "devfile/devfile_missing_api_version.yaml",

wsmaster/che-core-api-workspace/src/test/resources/devfile/devfile.yaml

@@ -14,6 +14,7 @@
 apiVersion: 1.0.0
 metadata:
   name: petclinic-dev-environment
+  generateName: petclinic-
 projects:
   - name: petclinic
     source:

wsmaster/che-core-api-workspace/src/test/resources/devfile/schema_test/devfile/devfile_just_generatename.yaml

@@ -0,0 +1,16 @@
+#
+# Copyright (c) 2012-2018 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+#
+
+---
+apiVersion: 1.0.0
+metadata:
+  generateName: test-

wsmaster/che-core-api-workspace/src/test/resources/devfile/schema_test/devfile/devfile_name_and_generatename.yaml

@@ -0,0 +1,17 @@
+#
+# Copyright (c) 2012-2018 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+#
+
+---
+apiVersion: 1.0.0
+metadata:
+  name: testName
+  generateName: testGenerateName-