Fixes config server bootstrap overrides.

Rebinds ConfigServerProperties and refreshes EnvironmentControler before webserver starts.

Fixes gh-2182

spring-cloud-config-server/src/main/java/org/springframework/cloud/config/server/bootstrap/ConfigServerBootstrapOverridesAutoConfiguration.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018-2022 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.cloud.config.server.bootstrap;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.web.context.WebServerGracefulShutdownLifecycle;
+import org.springframework.cloud.config.server.config.ConfigServerProperties;
+import org.springframework.cloud.config.server.environment.EnvironmentController;
+import org.springframework.cloud.context.properties.ConfigurationPropertiesRebinder;
+import org.springframework.cloud.context.scope.refresh.RefreshScope;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.SmartLifecycle;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnProperty("spring.cloud.config.server.bootstrap")
+public class ConfigServerBootstrapOverridesAutoConfiguration {
+
+	@Bean
+	ConfigServerBootstrapOverridesLifecycle configServerBootstrapOverridesLifecycle(ApplicationContext context) {
+		return new ConfigServerBootstrapOverridesLifecycle(context);
+	}
+
+	/**
+	 * SmartLifecycle that refreshes and rebinds beans needed for
+	 * spring.cloud.config.server.overrides to work.
+	 */
+	private static class ConfigServerBootstrapOverridesLifecycle implements SmartLifecycle {
+
+		private final ApplicationContext context;
+
+		private volatile boolean running;
+
+		ConfigServerBootstrapOverridesLifecycle(ApplicationContext context) {
+			this.context = context;
+		}
+
+		@Override
+		public void start() {
+			this.running = true;
+			ConfigurationPropertiesRebinder rebinder = context.getBean(ConfigurationPropertiesRebinder.class);
+			rebinder.rebind(ConfigServerProperties.class);
+			RefreshScope refreshScope = context.getBean(RefreshScope.class);
+			refreshScope.refresh(EnvironmentController.class);
+		}
+
+		@Override
+		public void stop() {
+			this.running = false;
+		}
+
+		@Override
+		public boolean isRunning() {
+			return this.running;
+		}
+
+		@Override
+		public int getPhase() {
+			// Run before WebServerStartStopLifecycle
+			return WebServerGracefulShutdownLifecycle.SMART_LIFECYCLE_PHASE - 3072;
+		}
+
+	}
+
+}

spring-cloud-config-server/src/main/resources/META-INF/spring.factories

@@ -9,8 +9,9 @@ org.springframework.cloud.config.server.bootstrap.ConfigServerBootstrapApplicati
 
 # Autoconfiguration
 org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+org.springframework.cloud.config.server.bootstrap.ConfigServerBootstrapOverridesAutoConfiguration,\
 org.springframework.cloud.config.server.config.ConfigServerAutoConfiguration,\
 org.springframework.cloud.config.server.config.EncryptionAutoConfiguration,\
 org.springframework.cloud.config.server.config.VaultEncryptionAutoConfiguration
 org.springframework.boot.diagnostics.FailureAnalyzer=\
-org.springframework.cloud.config.server.diagnostics.GitUriFailureAnalyzer
+org.springframework.cloud.config.server.diagnostics.GitUriFailureAnalyzer