Add timeout configuration for CRaSH

Closes gh-4325

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/ShellProperties.java

@@ -36,6 +36,7 @@ import org.springframework.util.StringUtils;
  *
  * @author Christian Dupuis
  * @author Phillip Webb
+ * @author Eddú Meléndez
  */
 @ConfigurationProperties(prefix = "shell", ignoreUnknownFields = true)
 public class ShellProperties {
@@ -242,10 +243,22 @@ public class ShellProperties {
 		 */
 		private Integer port = 2000;
 
+		/**
+		 * Number of milliseconds after which unused connections are closed.
+		 */
+		private Integer idleTimeout = 600000;
+
+		/**
+		 * Number of milliseconds after user will be prompted to login again.
+		 */
+		private Integer authTimeout = 600000;
+
 		@Override
 		protected void applyToCrshShellConfig(Properties config) {
 			if (this.enabled) {
 				config.put("crash.ssh.port", String.valueOf(this.port));
+				config.put("crash.ssh.auth_timeout", String.valueOf(this.authTimeout));
+				config.put("crash.ssh.idle_timeout", String.valueOf(this.idleTimeout));
 				if (this.keyPath != null) {
 					config.put("crash.ssh.keypath", this.keyPath);
 				}
@@ -278,6 +291,21 @@ public class ShellProperties {
 			return this.port;
 		}
 
+		public Integer getIdleTimeout() {
+			return this.idleTimeout;
+		}
+
+		public void setIdleTimeout(Integer idleTimeout) {
+			this.idleTimeout = idleTimeout;
+		}
+
+		public Integer getAuthTimeout() {
+			return this.authTimeout;
+		}
+
+		public void setAuthTimeout(Integer authTimeout) {
+			this.authTimeout = authTimeout;
+		}
 	}
 
 	/**

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/autoconfigure/CrshAutoConfigurationTests.java

@@ -62,6 +62,7 @@ import static org.junit.Assert.assertTrue;
  *
  * @author Christian Dupuis
  * @author Andreas Ahlenstorf
+ * @author Eddú Meléndez
  */
 @SuppressWarnings({ "rawtypes", "unchecked" })
 public class CrshAutoConfigurationTests {
@@ -80,10 +81,7 @@ public class CrshAutoConfigurationTests {
 		MockEnvironment env = new MockEnvironment();
 		env.setProperty("shell.disabled_plugins",
 				"GroovyREPL, termIOHandler, org.crsh.auth.AuthenticationPlugin");
-		this.context = new AnnotationConfigWebApplicationContext();
-		this.context.setEnvironment(env);
-		this.context.register(CrshAutoConfiguration.class);
-		this.context.refresh();
+		load(env);
 
 		PluginLifeCycle lifeCycle = this.context.getBean(PluginLifeCycle.class);
 		assertNotNull(lifeCycle);
@@ -112,14 +110,13 @@ public class CrshAutoConfigurationTests {
 		MockEnvironment env = new MockEnvironment();
 		env.setProperty("shell.ssh.enabled", "true");
 		env.setProperty("shell.ssh.port", "3333");
-		this.context = new AnnotationConfigWebApplicationContext();
-		this.context.setEnvironment(env);
-		this.context.register(CrshAutoConfiguration.class);
-		this.context.refresh();
+		load(env);
 
 		PluginLifeCycle lifeCycle = this.context.getBean(PluginLifeCycle.class);
 
 		assertEquals("3333", lifeCycle.getConfig().getProperty("crash.ssh.port"));
+		assertEquals("600000", lifeCycle.getConfig().getProperty("crash.ssh.auth_timeout"));
+		assertEquals("600000", lifeCycle.getConfig().getProperty("crash.ssh.idle_timeout"));
 	}
 
 	@Test
@@ -127,10 +124,7 @@ public class CrshAutoConfigurationTests {
 		MockEnvironment env = new MockEnvironment();
 		env.setProperty("shell.ssh.enabled", "true");
 		env.setProperty("shell.ssh.key_path", "~/.ssh/id.pem");
-		this.context = new AnnotationConfigWebApplicationContext();
-		this.context.setEnvironment(env);
-		this.context.register(CrshAutoConfiguration.class);
-		this.context.refresh();
+		load(env);
 
 		PluginLifeCycle lifeCycle = this.context.getBean(PluginLifeCycle.class);
 
@@ -138,6 +132,27 @@ public class CrshAutoConfigurationTests {
 				lifeCycle.getConfig().getProperty("crash.ssh.keypath"));
 	}
 
+	@Test
+	public void testSshConfigurationCustomTimeouts() {
+		MockEnvironment env = new MockEnvironment();
+		env.setProperty("shell.ssh.enabled", "true");
+		env.setProperty("shell.ssh.auth-timeout", "300000");
+		env.setProperty("shell.ssh.idle-timeout", "300000");
+		load(env);
+
+		PluginLifeCycle lifeCycle = this.context.getBean(PluginLifeCycle.class);
+
+		assertEquals("300000", lifeCycle.getConfig().getProperty("crash.ssh.auth_timeout"));
+		assertEquals("300000", lifeCycle.getConfig().getProperty("crash.ssh.idle_timeout"));
+	}
+
+	private void load(MockEnvironment env) {
+		this.context = new AnnotationConfigWebApplicationContext();
+		this.context.setEnvironment(env);
+		this.context.register(CrshAutoConfiguration.class);
+		this.context.refresh();
+	}
+
 	@Test
 	public void testCommandResolution() {
 		this.context = new AnnotationConfigWebApplicationContext();

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -846,7 +846,9 @@ content into your application; rather pick only the properties that you need.
 	shell.config-path-patterns=classpath*:/crash/* # Patterns to use to look for configurations.
 	shell.disabled-commands=jpa*,jdbc*,jndi* # Comma-separated list of commands to disable.
 	shell.disabled-plugins= # Comma-separated list of plugins to disable. Certain plugins are disabled by default based on the environment.
+	shell.ssh.auth-timeout = # Number of milliseconds after user will be prompted to login again.
 	shell.ssh.enabled=true # Enable CRaSH SSH support.
+	shell.ssh.idle-timeout = # Number of milliseconds after which unused connections are closed.
 	shell.ssh.key-path= # Path to the SSH server key.
 	shell.ssh.port=2000 # SSH port.
 	shell.telnet.enabled=false # Enable CRaSH telnet support. Enabled by default if the TelnetPlugin is  available.