Updated docs

spring-cloud-release-tools-core/src/main/java/org/springframework/cloud/release/internal/ReleaserProperties.java

@@ -734,6 +734,12 @@ public class ReleaserProperties implements Serializable {
 	}
 
 	public static class Sagan implements Serializable {
+
+		/**
+		 * If set to {@code false} will not update Sagan
+		 */
+		private boolean updateSagan = true;
+
 		/**
 		 * URL to the Sagan API
 		 */
@@ -747,6 +753,14 @@ public class ReleaserProperties implements Serializable {
 			this.baseUrl = baseUrl;
 		}
 
+		public boolean isUpdateSagan() {
+			return this.updateSagan;
+		}
+
+		public void setUpdateSagan(boolean updateSagan) {
+			this.updateSagan = updateSagan;
+		}
+
 		@Override public String toString() {
 			return "Sagan{" + "baseUrl='" + this.baseUrl + '\'' + '}';
 		}

spring-cloud-release-tools-core/src/main/java/org/springframework/cloud/release/internal/sagan/SaganUpdater.java

@@ -4,6 +4,8 @@ import java.util.stream.Collectors;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
+import org.springframework.cloud.release.internal.ReleaserProperties;
 import org.springframework.cloud.release.internal.pom.ProjectVersion;
 
 import edu.emory.mathcs.backport.java.util.Collections;
@@ -16,12 +18,19 @@ public class SaganUpdater {
 	private static final Logger log = LoggerFactory.getLogger(SaganUpdater.class);
 
 	private final SaganClient saganClient;
+	private final ReleaserProperties releaserProperties;
 
-	public SaganUpdater(SaganClient saganClient) {
+	public SaganUpdater(SaganClient saganClient, ReleaserProperties releaserProperties) {
 		this.saganClient = saganClient;
+		this.releaserProperties = releaserProperties;
 	}
 
 	public void updateSagan(String branch, ProjectVersion originalVersion, ProjectVersion version) {
+		if (!releaserProperties.getSagan().isUpdateSagan()) {
+			log.info("Will not update sagan, since the switch to do so "
+					+ "is off. Set [releaser.sagan.update-sagan] to [true] to change that");
+			return;
+		}
 		ReleaseUpdate update = releaseUpdate(branch, originalVersion, version);
 		updateSaganForNonSnapshot(branch, originalVersion, version);
 		log.info("Updating Sagan with \n\n{}", update);

spring-cloud-release-tools-core/src/test/java/org/springframework/cloud/release/internal/sagan/SaganUpdaterTest.java

@@ -3,16 +3,13 @@ package org.springframework.cloud.release.internal.sagan;
 import java.util.Arrays;
 import java.util.List;
 
-import org.hamcrest.Description;
-import org.hamcrest.TypeSafeMatcher;
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 import org.mockito.ArgumentMatcher;
 import org.mockito.BDDMockito;
-import org.mockito.InjectMocks;
-import org.mockito.Mock;
-import org.mockito.junit.MockitoJUnitRunner;
+import org.mockito.Mockito;
+
+import org.springframework.cloud.release.internal.ReleaserProperties;
 import org.springframework.cloud.release.internal.pom.ProjectVersion;
 
 import static org.mockito.BDDMockito.then;
@@ -22,11 +19,11 @@ import static org.mockito.Mockito.never;
 /**
  * @author Marcin Grzejszczak
  */
-@RunWith(MockitoJUnitRunner.class)
 public class SaganUpdaterTest {
 
-	@Mock SaganClient saganClient;
-	@InjectMocks SaganUpdater saganUpdater;
+	SaganClient saganClient = Mockito.mock(SaganClient.class);
+	ReleaserProperties properties = new ReleaserProperties();
+	SaganUpdater saganUpdater = new SaganUpdater(this.saganClient, this.properties);
 
 	@Before
 	public void setup() {
@@ -47,6 +44,14 @@ public class SaganUpdaterTest {
 		return release;
 	}
 
+	@Test public void should_not_update_sagan_when_switch_is_off() throws Exception {
+		this.properties.getSagan().setUpdateSagan(false);
+
+		this.saganUpdater.updateSagan("master", version("1.0.0.M1"), version("1.0.0.M1"));
+
+		then(this.saganClient).shouldHaveZeroInteractions();
+	}
+
 	@Test public void should_update_sagan_for_milestone() throws Exception {
 		this.saganUpdater.updateSagan("master", version("1.0.0.M1"), version("1.0.0.M1"));