diff --git a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreaker.java b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreaker.java
index 1127c5e..35f9052 100644
--- a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreaker.java
+++ b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreaker.java
@@ -41,50 +41,53 @@ import org.springframework.util.Assert;
  */
 public class SentinelCircuitBreaker implements CircuitBreaker {
 
-    private final String resourceName;
-    private final EntryType entryType;
+	private final String resourceName;
+	private final EntryType entryType;
 
-    private final List<DegradeRule> rules;
+	private final List<DegradeRule> rules;
 
-    public SentinelCircuitBreaker(String resourceName, EntryType entryType, List<DegradeRule> rules) {
-        Assert.hasText(resourceName, "resourceName cannot be blank");
-        Assert.notNull(rules, "rules should not be null");
-        this.resourceName = resourceName;
-        this.entryType = entryType;
-        this.rules = Collections.unmodifiableList(rules);
+	public SentinelCircuitBreaker(String resourceName, EntryType entryType, List<DegradeRule> rules) {
+		Assert.hasText(resourceName, "resourceName cannot be blank");
+		Assert.notNull(rules, "rules should not be null");
+		this.resourceName = resourceName;
+		this.entryType = entryType;
+		this.rules = Collections.unmodifiableList(rules);
 
-        applyToSentinelRuleManager();
-    }
+		applyToSentinelRuleManager();
+	}
 
-    public SentinelCircuitBreaker(String resourceName, List<DegradeRule> rules) {
-        this(resourceName, EntryType.OUT, rules);
-    }
+	public SentinelCircuitBreaker(String resourceName, List<DegradeRule> rules) {
+		this(resourceName, EntryType.OUT, rules);
+	}
 
-    public SentinelCircuitBreaker(String resourceName) {
-        this(resourceName, EntryType.OUT, Collections.emptyList());
-    }
+	public SentinelCircuitBreaker(String resourceName) {
+		this(resourceName, EntryType.OUT, Collections.emptyList());
+	}
 
-    private void applyToSentinelRuleManager() {
-        Set<DegradeRule> ruleSet = new HashSet<>(DegradeRuleManager.getRules());
-        ruleSet.addAll(this.rules);
-        DegradeRuleManager.loadRules(new ArrayList<>(ruleSet));
-    }
+	private void applyToSentinelRuleManager() {
+		Set<DegradeRule> ruleSet = new HashSet<>(DegradeRuleManager.getRules());
+		ruleSet.addAll(this.rules);
+		DegradeRuleManager.loadRules(new ArrayList<>(ruleSet));
+	}
 
-    @Override
-    public <T> T run(Supplier<T> toRun, Function<Throwable, T> fallback) {
-        Entry entry = null;
-        try {
-            entry = SphU.entry(resourceName, entryType);
-            return toRun.get();
-        } catch (BlockException ex) {
-            return fallback.apply(ex);
-        } catch (Exception ex) {
-            Tracer.trace(ex);
-            return fallback.apply(ex);
-        } finally {
-            if (entry != null) {
-                entry.exit();
-            }
-        }
-    }
+	@Override
+	public <T> T run(Supplier<T> toRun, Function<Throwable, T> fallback) {
+		Entry entry = null;
+		try {
+			entry = SphU.entry(resourceName, entryType);
+			return toRun.get();
+		}
+		catch (BlockException ex) {
+			return fallback.apply(ex);
+		}
+		catch (Exception ex) {
+			Tracer.trace(ex);
+			return fallback.apply(ex);
+		}
+		finally {
+			if (entry != null) {
+				entry.exit();
+			}
+		}
+	}
 }
diff --git a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerAutoConfiguration.java b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerAutoConfiguration.java
index 638e436..d6efab7 100644
--- a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerAutoConfiguration.java
+++ b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerAutoConfiguration.java
@@ -34,26 +34,26 @@ import org.springframework.context.annotation.Configuration;
  * @author Eric Zhao
  */
 @Configuration
-@ConditionalOnClass({ SphU.class })
+@ConditionalOnClass({SphU.class})
 public class SentinelCircuitBreakerAutoConfiguration {
 
-    @Bean
-    @ConditionalOnMissingBean(CircuitBreakerFactory.class)
-    public CircuitBreakerFactory sentinelCircuitBreakerFactory() {
-        return new SentinelCircuitBreakerFactory();
-    }
+	@Bean
+	@ConditionalOnMissingBean(CircuitBreakerFactory.class)
+	public CircuitBreakerFactory sentinelCircuitBreakerFactory() {
+		return new SentinelCircuitBreakerFactory();
+	}
 
-    @Configuration
-    public static class SentinelCustomizerConfiguration {
-        @Autowired(required = false)
-        public List<Customizer<SentinelCircuitBreakerFactory>> customizers = new ArrayList<>();
+	@Configuration
+	public static class SentinelCustomizerConfiguration {
+		@Autowired(required = false)
+		public List<Customizer<SentinelCircuitBreakerFactory>> customizers = new ArrayList<>();
 
-        @Autowired(required = false)
-        public SentinelCircuitBreakerFactory factory;
+		@Autowired(required = false)
+		public SentinelCircuitBreakerFactory factory;
 
-        @PostConstruct
-        public void init() {
-            customizers.forEach(customizer -> customizer.customize(factory));
-        }
-    }
+		@PostConstruct
+		public void init() {
+			customizers.forEach(customizer -> customizer.customize(factory));
+		}
+	}
 }
\ No newline at end of file
diff --git a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerFactory.java b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerFactory.java
index f5186b5..0d40ef5 100644
--- a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerFactory.java
+++ b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelCircuitBreakerFactory.java
@@ -28,27 +28,27 @@ import org.springframework.util.Assert;
  */
 public class SentinelCircuitBreakerFactory extends CircuitBreakerFactory<SentinelConfigBuilder.SentinelCircuitBreakerConfiguration, SentinelConfigBuilder> {
 
-    private Function<String, SentinelConfigBuilder.SentinelCircuitBreakerConfiguration> defaultConfiguration = id ->
-        new SentinelConfigBuilder()
-            .resourceName(id)
-            .rules(new ArrayList<>())
-            .build();
+	private Function<String, SentinelConfigBuilder.SentinelCircuitBreakerConfiguration> defaultConfiguration = id ->
+			new SentinelConfigBuilder()
+					.resourceName(id)
+					.rules(new ArrayList<>())
+					.build();
 
-    @Override
-    public CircuitBreaker create(String id) {
-        Assert.hasText(id, "A CircuitBreaker must have an id.");
-        SentinelConfigBuilder.SentinelCircuitBreakerConfiguration conf = getConfigurations()
-            .computeIfAbsent(id, defaultConfiguration);
-        return new SentinelCircuitBreaker(id, conf.getEntryType(), conf.getRules());
-    }
+	@Override
+	public CircuitBreaker create(String id) {
+		Assert.hasText(id, "A CircuitBreaker must have an id.");
+		SentinelConfigBuilder.SentinelCircuitBreakerConfiguration conf = getConfigurations()
+				.computeIfAbsent(id, defaultConfiguration);
+		return new SentinelCircuitBreaker(id, conf.getEntryType(), conf.getRules());
+	}
 
-    @Override
-    protected SentinelConfigBuilder configBuilder(String id) {
-        return new SentinelConfigBuilder(id);
-    }
+	@Override
+	protected SentinelConfigBuilder configBuilder(String id) {
+		return new SentinelConfigBuilder(id);
+	}
 
-    @Override
-    public void configureDefault(Function<String, SentinelCircuitBreakerConfiguration> defaultConfiguration) {
-        this.defaultConfiguration = defaultConfiguration;
-    }
+	@Override
+	public void configureDefault(Function<String, SentinelCircuitBreakerConfiguration> defaultConfiguration) {
+		this.defaultConfiguration = defaultConfiguration;
+	}
 }
diff --git a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelConfigBuilder.java b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelConfigBuilder.java
index 6996e9b..91bc227 100644
--- a/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelConfigBuilder.java
+++ b/spring-cloud-circuitbreaker-sentinel/src/main/java/org/springframework/cloud/circuitbreaker/sentinel/SentinelConfigBuilder.java
@@ -30,74 +30,75 @@ import org.springframework.util.Assert;
  */
 public class SentinelConfigBuilder implements ConfigBuilder<SentinelConfigBuilder.SentinelCircuitBreakerConfiguration> {
 
-    private String resourceName;
-    private EntryType entryType;
-    private List<DegradeRule> rules;
+	private String resourceName;
+	private EntryType entryType;
+	private List<DegradeRule> rules;
 
-    public SentinelConfigBuilder() {}
+	public SentinelConfigBuilder() {
+	}
 
-    public SentinelConfigBuilder(String resourceName) {
-        this.resourceName = resourceName;
-    }
+	public SentinelConfigBuilder(String resourceName) {
+		this.resourceName = resourceName;
+	}
 
-    public SentinelConfigBuilder resourceName(String resourceName) {
-        this.resourceName = resourceName;
-        return this;
-    }
+	public SentinelConfigBuilder resourceName(String resourceName) {
+		this.resourceName = resourceName;
+		return this;
+	}
 
-    public SentinelConfigBuilder entryType(EntryType entryType) {
-        this.entryType = entryType;
-        return this;
-    }
+	public SentinelConfigBuilder entryType(EntryType entryType) {
+		this.entryType = entryType;
+		return this;
+	}
 
-    public SentinelConfigBuilder rules(List<DegradeRule> rules) {
-        this.rules = rules;
-        return this;
-    }
+	public SentinelConfigBuilder rules(List<DegradeRule> rules) {
+		this.rules = rules;
+		return this;
+	}
 
-    @Override
-    public SentinelCircuitBreakerConfiguration build() {
-        Assert.hasText(resourceName, "resourceName cannot be empty");
-        List<DegradeRule> rules = Optional.ofNullable(this.rules).orElse(new ArrayList<>());
+	@Override
+	public SentinelCircuitBreakerConfiguration build() {
+		Assert.hasText(resourceName, "resourceName cannot be empty");
+		List<DegradeRule> rules = Optional.ofNullable(this.rules).orElse(new ArrayList<>());
 
-        EntryType entryType = Optional.ofNullable(this.entryType).orElse(EntryType.OUT);
-        return new SentinelCircuitBreakerConfiguration()
-            .setResourceName(this.resourceName)
-            .setEntryType(entryType)
-            .setRules(rules);
-    }
+		EntryType entryType = Optional.ofNullable(this.entryType).orElse(EntryType.OUT);
+		return new SentinelCircuitBreakerConfiguration()
+				.setResourceName(this.resourceName)
+				.setEntryType(entryType)
+				.setRules(rules);
+	}
 
-    public static class SentinelCircuitBreakerConfiguration {
-        private String resourceName;
-        private EntryType entryType;
+	public static class SentinelCircuitBreakerConfiguration {
+		private String resourceName;
+		private EntryType entryType;
 
-        private List<DegradeRule> rules;
+		private List<DegradeRule> rules;
 
-        public String getResourceName() {
-            return resourceName;
-        }
+		public String getResourceName() {
+			return resourceName;
+		}
 
-        public SentinelCircuitBreakerConfiguration setResourceName(String resourceName) {
-            this.resourceName = resourceName;
-            return this;
-        }
+		public SentinelCircuitBreakerConfiguration setResourceName(String resourceName) {
+			this.resourceName = resourceName;
+			return this;
+		}
 
-        public EntryType getEntryType() {
-            return entryType;
-        }
+		public EntryType getEntryType() {
+			return entryType;
+		}
 
-        public SentinelCircuitBreakerConfiguration setEntryType(EntryType entryType) {
-            this.entryType = entryType;
-            return this;
-        }
+		public SentinelCircuitBreakerConfiguration setEntryType(EntryType entryType) {
+			this.entryType = entryType;
+			return this;
+		}
 
-        public List<DegradeRule> getRules() {
-            return rules;
-        }
+		public List<DegradeRule> getRules() {
+			return rules;
+		}
 
-        public SentinelCircuitBreakerConfiguration setRules(List<DegradeRule> rules) {
-            this.rules = rules;
-            return this;
-        }
-    }
+		public SentinelCircuitBreakerConfiguration setRules(List<DegradeRule> rules) {
+			this.rules = rules;
+			return this;
+		}
+	}
 }