SONAR-16395 Activate Analyzers Cache by default

sonar-scanner-engine/src/main/java/org/sonar/scanner/cache/AnalysisCacheEnabled.java

   }
 
   public boolean isEnabled() {
-    return configuration.getBoolean(PROP_KEY).orElse(false);
+    return configuration.getBoolean(PROP_KEY).orElse(true);
   }
 }

sonar-scanner-engine/src/main/java/org/sonar/scanner/cache/AnalysisCacheLoader.java

  */
 package org.sonar.scanner.cache;
 
-import java.io.IOException;
-import java.io.InputStream;
 import java.util.Optional;
-import java.util.zip.InflaterInputStream;
-import org.sonar.api.scanner.fs.InputProject;
-import org.sonar.api.utils.MessageException;
-import org.sonar.core.util.Protobuf;
-import org.sonar.scanner.bootstrap.DefaultScannerWsClient;
 import org.sonar.scanner.protocol.internal.ScannerInternal;
-import org.sonar.scanner.protocol.internal.ScannerInternal.AnalysisCacheMsg;
-import org.sonar.scanner.scan.branch.BranchConfiguration;
-import org.sonar.scanner.scan.branch.BranchType;
-import org.sonarqube.ws.client.GetRequest;
-import org.sonarqube.ws.client.HttpException;
-import org.sonarqube.ws.client.WsResponse;
 
-/**
- * Loads plugin cache into the local storage
- */
-public class AnalysisCacheLoader {
-  static final String CONTENT_ENCODING = "Content-Encoding";
-  static final String ACCEPT_ENCODING = "Accept-Encoding";
-  private static final String URL = "api/analysis_cache/get";
-
-  private final DefaultScannerWsClient wsClient;
-  private final InputProject project;
-  private final BranchConfiguration branchConfiguration;
-
-  public AnalysisCacheLoader(DefaultScannerWsClient wsClient, InputProject project, BranchConfiguration branchConfiguration) {
-    this.project = project;
-    this.branchConfiguration = branchConfiguration;
-    this.wsClient = wsClient;
-  }
-
-  public Optional<AnalysisCacheMsg> load() {
-    String url = URL + "?project=" + project.key();
-    if (branchConfiguration.referenceBranchName() != null) {
-      url = url + "&branch=" + branchConfiguration.referenceBranchName();
-    }
-
-    GetRequest request = new GetRequest(url).setHeader(ACCEPT_ENCODING, "gzip");
-
-    try (WsResponse response = wsClient.call(request); InputStream is = response.contentStream()) {
-      Optional<String> contentEncoding = response.header(CONTENT_ENCODING);
-      if (contentEncoding.isPresent() && contentEncoding.get().equals("gzip")) {
-        return Optional.of(decompress(is));
-      } else {
-        return Optional.of(Protobuf.read(is, AnalysisCacheMsg.parser()));
-      }
-    } catch (HttpException e) {
-      if (e.code() == 404) {
-        return Optional.empty();
-      }
-      throw MessageException.of("Failed to download analysis cache: " + DefaultScannerWsClient.createErrorMessage(e));
-    } catch (Exception e) {
-      throw new IllegalStateException("Failed to download analysis cache", e);
-    }
-  }
-
-  private static AnalysisCacheMsg decompress(InputStream is) {
-    try (InflaterInputStream iis = new InflaterInputStream(is)) {
-      return Protobuf.read(iis, ScannerInternal.AnalysisCacheMsg.parser());
-    } catch (IOException e) {
-      throw new IllegalStateException("Failed to decompress analysis cache", e);
-    }
-  }
+public interface AnalysisCacheLoader {
+  Optional<ScannerInternal.AnalysisCacheMsg> load();
 }

sonar-scanner-engine/src/main/java/org/sonar/scanner/cache/DefaultAnalysisCacheLoader.java

+/*
+ * SonarQube
+ * Copyright (C) 2009-2022 SonarSource SA
+ * mailto:info 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.scanner.cache;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Optional;
+import java.util.zip.InflaterInputStream;
+import org.sonar.api.scanner.fs.InputProject;
+import org.sonar.api.utils.MessageException;
+import org.sonar.core.util.Protobuf;
+import org.sonar.scanner.bootstrap.DefaultScannerWsClient;
+import org.sonar.scanner.protocol.internal.ScannerInternal;
+import org.sonar.scanner.protocol.internal.ScannerInternal.AnalysisCacheMsg;
+import org.sonar.scanner.scan.branch.BranchConfiguration;
+import org.sonarqube.ws.client.GetRequest;
+import org.sonarqube.ws.client.HttpException;
+import org.sonarqube.ws.client.WsResponse;
+
+/**
+ * Loads plugin cache into the local storage
+ */
+public class DefaultAnalysisCacheLoader implements AnalysisCacheLoader {
+  static final String CONTENT_ENCODING = "Content-Encoding";
+  static final String ACCEPT_ENCODING = "Accept-Encoding";
+  private static final String URL = "api/analysis_cache/get";
+
+  private final DefaultScannerWsClient wsClient;
+  private final InputProject project;
+  private final BranchConfiguration branchConfiguration;
+
+  public DefaultAnalysisCacheLoader(DefaultScannerWsClient wsClient, InputProject project, BranchConfiguration branchConfiguration) {
+    this.project = project;
+    this.branchConfiguration = branchConfiguration;
+    this.wsClient = wsClient;
+  }
+
+  @Override public Optional<AnalysisCacheMsg> load() {
+    String url = URL + "?project=" + project.key();
+    if (branchConfiguration.referenceBranchName() != null) {
+      url = url + "&branch=" + branchConfiguration.referenceBranchName();
+    }
+
+    GetRequest request = new GetRequest(url).setHeader(ACCEPT_ENCODING, "gzip");
+
+    try (WsResponse response = wsClient.call(request); InputStream is = response.contentStream()) {
+      Optional<String> contentEncoding = response.header(CONTENT_ENCODING);
+      if (contentEncoding.isPresent() && contentEncoding.get().equals("gzip")) {
+        return Optional.of(decompress(is));
+      } else {
+        return Optional.of(Protobuf.read(is, AnalysisCacheMsg.parser()));
+      }
+    } catch (HttpException e) {
+      if (e.code() == 404) {
+        return Optional.empty();
+      }
+      throw MessageException.of("Failed to download analysis cache: " + DefaultScannerWsClient.createErrorMessage(e));
+    } catch (Exception e) {
+      throw new IllegalStateException("Failed to download analysis cache", e);
+    }
+  }
+
+  private static AnalysisCacheMsg decompress(InputStream is) {
+    try (InflaterInputStream iis = new InflaterInputStream(is)) {
+      return Protobuf.read(iis, ScannerInternal.AnalysisCacheMsg.parser());
+    } catch (IOException e) {
+      throw new IllegalStateException("Failed to decompress analysis cache", e);
+    }
+  }
+}

sonar-scanner-engine/src/main/java/org/sonar/scanner/scan/SpringProjectScanContainer.java

 import org.sonar.scanner.bootstrap.GlobalAnalysisMode;
 import org.sonar.scanner.bootstrap.PostJobExtensionDictionary;
 import org.sonar.scanner.cache.AnalysisCacheEnabled;
-import org.sonar.scanner.cache.AnalysisCacheLoader;
+import org.sonar.scanner.cache.DefaultAnalysisCacheLoader;
 import org.sonar.scanner.cache.AnalysisCacheMemoryStorage;
 import org.sonar.scanner.cache.AnalysisCacheProvider;
 import org.sonar.scanner.ci.CiConfigurationProvider;
       // Plugin cache
       AnalysisCacheProvider.class,
       AnalysisCacheMemoryStorage.class,
-      AnalysisCacheLoader.class,
+      DefaultAnalysisCacheLoader.class,
 
       // Report
       ReferenceBranchSupplier.class,

sonar-scanner-engine/src/test/java/org/sonar/scanner/cache/AnalysisCacheEnabledTest.java

   private final AnalysisCacheEnabled analysisCacheEnabled = new AnalysisCacheEnabled(configuration);
 
   @Test
-  public void disabled_unless_property_set() {
-    assertThat(analysisCacheEnabled.isEnabled()).isFalse();
+  public void enabled_by_default() {
+    assertThat(analysisCacheEnabled.isEnabled()).isTrue();
   }
 
   @Test
-  public void enabled_if_property_set() {
-    when(configuration.getBoolean(PROP_KEY)).thenReturn(Optional.of(true));
-    assertThat(analysisCacheEnabled.isEnabled()).isTrue();
+  public void disabled_if_property_set() {
+    when(configuration.getBoolean(PROP_KEY)).thenReturn(Optional.of(false));
+    assertThat(analysisCacheEnabled.isEnabled()).isFalse();
   }
 }

sonar-scanner-engine/src/test/java/org/sonar/scanner/cache/AnalysisCacheLoaderTest.java → sonar-scanner-engine/src/test/java/org/sonar/scanner/cache/DefaultAnalysisCacheLoaderTest.java

 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
-import static org.sonar.scanner.cache.AnalysisCacheLoader.CONTENT_ENCODING;
+import static org.sonar.scanner.cache.DefaultAnalysisCacheLoader.CONTENT_ENCODING;
 
-public class AnalysisCacheLoaderTest {
+public class DefaultAnalysisCacheLoaderTest {
   private final static AnalysisCacheMsg MSG = AnalysisCacheMsg.newBuilder()
     .putMap("key", ByteString.copyFrom("value", StandardCharsets.UTF_8))
     .build();
   private final DefaultScannerWsClient wsClient = mock(DefaultScannerWsClient.class);
   private final InputProject project = mock(InputProject.class);
   private final BranchConfiguration branchConfiguration = mock(BranchConfiguration.class);
-  private final AnalysisCacheLoader loader = new AnalysisCacheLoader(wsClient, project, branchConfiguration);
+  private final DefaultAnalysisCacheLoader loader = new DefaultAnalysisCacheLoader(wsClient, project, branchConfiguration);
 
   @Before
   public void before() {

sonar-scanner-engine/src/test/java/org/sonar/scanner/mediumtest/ScannerMediumTester.java

 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Properties;
 import javax.annotation.CheckForNull;
 import javax.annotation.Nullable;
 import org.sonar.api.SonarQubeSide;
 import org.sonar.api.SonarRuntime;
 import org.sonar.api.batch.rule.LoadedActiveRule;
+import org.sonar.api.batch.sensor.cache.ReadCache;
 import org.sonar.api.impl.server.RulesDefinitionContext;
 import org.sonar.api.measures.CoreMetrics;
 import org.sonar.api.measures.Metric;
 import org.sonar.batch.bootstrapper.EnvironmentInformation;
 import org.sonar.batch.bootstrapper.LogOutput;
 import org.sonar.scanner.bootstrap.GlobalAnalysisMode;
+import org.sonar.scanner.cache.AnalysisCacheLoader;
+import org.sonar.scanner.cache.AnalysisCacheMemoryStorage;
+import org.sonar.scanner.cache.ReadCacheImpl;
+import org.sonar.scanner.protocol.internal.ScannerInternal;
 import org.sonar.scanner.report.CeTaskReportDataHolder;
 import org.sonar.scanner.repository.FileData;
 import org.sonar.scanner.repository.MetricsRepository;
 import org.sonarqube.ws.NewCodePeriods;
 import org.sonarqube.ws.Qualityprofiles.SearchWsResponse.QualityProfile;
 import org.sonarqube.ws.Rules.ListResponse.Rule;
+import org.springframework.context.annotation.Bean;
 
 import static java.util.Collections.emptySet;
 
   private final FakeGlobalSettingsLoader globalSettingsLoader = new FakeGlobalSettingsLoader();
   private final FakeProjectSettingsLoader projectSettingsLoader = new FakeProjectSettingsLoader();
   private final FakeNewCodePeriodLoader newCodePeriodLoader = new FakeNewCodePeriodLoader();
+  private final FakeAnalysisCacheLoader analysisCacheLoader = new FakeAnalysisCacheLoader();
   private final FakeRulesLoader rulesLoader = new FakeRulesLoader();
   private final FakeQualityProfileLoader qualityProfiles = new FakeQualityProfileLoader();
   private final FakeActiveRulesLoader activeRules = new FakeActiveRulesLoader();
           tester.globalSettingsLoader,
           tester.projectSettingsLoader,
           tester.newCodePeriodLoader,
+          tester.analysisCacheLoader,
           tester.sonarRuntime,
           tester.reportMetadataHolder,
           result)
     }
   }
 
+  @Priority(1)
+  private static class FakeAnalysisCacheLoader implements AnalysisCacheLoader {
+    @Override
+    public Optional<ScannerInternal.AnalysisCacheMsg> load() {
+      return Optional.empty();
+    }
+  }
+
   @Priority(1)
   private static class FakeGlobalSettingsLoader implements GlobalSettingsLoader {