SONAR-7458 new component org.sonar.api.SonarQubeVersion

2 files changed, 113 insertions, 0 deletions

diff --git a/sonar-core/src/main/java/org/sonar/core/platform/SonarQubeVersionProvider.java b/sonar-core/src/main/java/org/sonar/core/platform/SonarQubeVersionProvider.java
new file mode 100644
index 00000000000..a0f54de7490
--- /dev/null
+++ b/sonar-core/src/main/java/org/sonar/core/platform/SonarQubeVersionProvider.java
@@ -0,0 +1,49 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2016 SonarSource SA
+ * mailto:contact AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.core.platform;
+
+import com.google.common.io.Resources;
+import java.io.IOException;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import org.picocontainer.injectors.ProviderAdapter;
+import org.sonar.api.SonarQubeVersion;
+import org.sonar.api.utils.System2;
+import org.sonar.api.utils.Version;
+
+public class SonarQubeVersionProvider extends ProviderAdapter {
+
+  private static final String FILE_PATH = "/sq-version.txt";
+
+  private SonarQubeVersion version = null;
+
+  public SonarQubeVersion provide(System2 system) {
+    if (version == null) {
+      try {
+        URL url = system.getResource(FILE_PATH);
+        String versionInFile = Resources.toString(url, StandardCharsets.UTF_8);
+        version = new SonarQubeVersion(Version.parse(versionInFile));
+      } catch (IOException e) {
+        throw new IllegalStateException("Can not load " + FILE_PATH + " from classpath", e);
+      }
+    }
+    return version;
+  }
+}
diff --git a/sonar-core/src/test/java/org/sonar/core/platform/SonarQubeVersionProviderTest.java b/sonar-core/src/test/java/org/sonar/core/platform/SonarQubeVersionProviderTest.java
new file mode 100644
index 00000000000..79d9baddc27
--- /dev/null
+++ b/sonar-core/src/test/java/org/sonar/core/platform/SonarQubeVersionProviderTest.java
@@ -0,0 +1,64 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2016 SonarSource SA
+ * mailto:contact AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.core.platform;
+
+import java.io.File;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.sonar.api.SonarQubeVersion;
+import org.sonar.api.utils.System2;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class SonarQubeVersionProviderTest {
+
+  @Rule
+  public ExpectedException expectedException = ExpectedException.none();
+
+  SonarQubeVersionProvider underTest = new SonarQubeVersionProvider();
+
+  @Test
+  public void create() {
+    SonarQubeVersion version = underTest.provide(System2.INSTANCE);
+    assertThat(version).isNotNull();
+    assertThat(version.get().major()).isGreaterThanOrEqualTo(5);
+  }
+
+  @Test
+  public void cache_version() {
+    SonarQubeVersion version1 = underTest.provide(System2.INSTANCE);
+    SonarQubeVersion version2 = underTest.provide(System2.INSTANCE);
+    assertThat(version1).isSameAs(version2);
+  }
+
+  @Test
+  public void throw_ISE_if_fail_to_load_version() throws Exception {
+    expectedException.expect(IllegalStateException.class);
+    expectedException.expectMessage("Can not load /sq-version.txt from classpath");
+
+    System2 system = mock(System2.class);
+    when(system.getResource(anyString())).thenReturn(new File("target/unknown").toURL());
+    underTest.provide(system);
+  }
+}