Add redis sentinel password property

Closes gh-21353

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/redis/RedisConnectionConfiguration.java

 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -82,6 +82,9 @@ abstract class RedisConnectionConfiguration {
 			if (this.properties.getPassword() != null) {
 				config.setPassword(RedisPassword.of(this.properties.getPassword()));
 			}
+			if (sentinelProperties.getPassword() != null) {
+				config.setSentinelPassword(RedisPassword.of(sentinelProperties.getPassword()));
+			}
 			config.setDatabase(this.properties.getDatabase());
 			return config;
 		}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/redis/RedisProperties.java

@@ -301,6 +301,11 @@ public class RedisProperties {
 		 */
 		private List<String> nodes;
 
+		/**
+		 * Password for authenticating with sentinel(s).
+		 */
+		private String password;
+
 		public String getMaster() {
 			return this.master;
 		}
@@ -317,6 +322,14 @@ public class RedisProperties {
 			this.nodes = nodes;
 		}
 
+		public String getPassword() {
+			return this.password;
+		}
+
+		public void setPassword(String password) {
+			this.password = password;
+		}
+
 	}
 
 	/**

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/redis/RedisAutoConfigurationTests.java

@@ -37,6 +37,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.data.redis.connection.RedisClusterConfiguration;
 import org.springframework.data.redis.connection.RedisNode;
+import org.springframework.data.redis.connection.RedisSentinelConfiguration;
 import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration;
 import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration.LettuceClientConfigurationBuilder;
 import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
@@ -199,17 +200,34 @@ class RedisAutoConfigurationTests {
 	}
 
 	@Test
-	void testRedisConfigurationWithSentinelAndPassword() {
+	void testRedisConfigurationWithSentinelAndDataNodePassword() {
 		this.contextRunner.withPropertyValues("spring.redis.password=password", "spring.redis.sentinel.master:mymaster",
 				"spring.redis.sentinel.nodes:127.0.0.1:26379,  127.0.0.1:26380").run((context) -> {
 					LettuceConnectionFactory connectionFactory = context.getBean(LettuceConnectionFactory.class);
 					assertThat(connectionFactory.getPassword()).isEqualTo("password");
+					RedisSentinelConfiguration sentinelConfiguration = connectionFactory.getSentinelConfiguration();
+					assertThat(sentinelConfiguration.getSentinelPassword().isPresent()).isFalse();
 					Set<RedisNode> sentinels = connectionFactory.getSentinelConfiguration().getSentinels();
 					assertThat(sentinels.stream().map(Object::toString).collect(Collectors.toSet()))
 							.contains("127.0.0.1:26379", "127.0.0.1:26380");
 				});
 	}
 
+	@Test
+	void testRedisConfigurationWithSentinelPasswordAndDataNodePassword() {
+		this.contextRunner.withPropertyValues("spring.redis.password=password", "spring.redis.sentinel.password=secret",
+				"spring.redis.sentinel.master:mymaster",
+				"spring.redis.sentinel.nodes:127.0.0.1:26379,  127.0.0.1:26380").run((context) -> {
+					LettuceConnectionFactory connectionFactory = context.getBean(LettuceConnectionFactory.class);
+					assertThat(connectionFactory.getPassword()).isEqualTo("password");
+					RedisSentinelConfiguration sentinelConfiguration = connectionFactory.getSentinelConfiguration();
+					assertThat(new String(sentinelConfiguration.getSentinelPassword().get())).isEqualTo("secret");
+					Set<RedisNode> sentinels = sentinelConfiguration.getSentinels();
+					assertThat(sentinels.stream().map(Object::toString).collect(Collectors.toSet()))
+							.contains("127.0.0.1:26379", "127.0.0.1:26380");
+				});
+	}
+
 	@Test
 	void testRedisConfigurationWithCluster() {
 		List<String> clusterNodes = Arrays.asList("127.0.0.1:27379", "127.0.0.1:27380");