Prohibit usage of Micrometer nullability annotations

Closes gh-30881

Author: wilkinsona

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/web/servlet/WebMvcMetricsFilterTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -47,7 +47,6 @@
 import io.micrometer.core.instrument.config.MeterFilterReply;
 import io.micrometer.core.instrument.simple.SimpleConfig;
 import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
-import io.micrometer.core.lang.NonNull;
 import io.micrometer.prometheus.PrometheusConfig;
 import io.micrometer.prometheus.PrometheusMeterRegistry;
 import io.prometheus.client.CollectorRegistry;
@@ -357,8 +356,7 @@ PrometheusMeterRegistry prometheus(Clock clock) {
 					clock);
 			r.config().meterFilter(new MeterFilter() {
 				@Override
-				@NonNull
-				public MeterFilterReply accept(@NonNull Meter.Id id) {
+				public MeterFilterReply accept(Meter.Id id) {
 					for (Tag tag : id.getTags()) {
 						if (tag.getKey().equals("uri")
 								&& (tag.getValue().contains("histogram") || tag.getValue().contains("percentiles"))) {

src/checkstyle/checkstyle.xml

@@ -13,7 +13,7 @@
 			name="com.puppycrawl.tools.checkstyle.checks.imports.IllegalImportCheck">
 			<property name="regexp" value="true" />
 			<property name="illegalPkgs"
-				value="^sun.*, ^org\.apache\.commons\.(?!compress|dbcp2|logging|pool2).*, ^com\.datastax\.oss\.driver\.shaded.*, ^com\.google\.common.*, ^io\.micrometer\.shaded.*, ^org\.flywaydb\.core\.internal.*, ^org\.jetbrains\.annotations.*, ^org\.testcontainers\.shaded.*" />
+				value="^sun.*, ^org\.apache\.commons\.(?!compress|dbcp2|logging|pool2).*, ^com\.datastax\.oss\.driver\.shaded.*, ^com\.google\.common.*, ^io\.micrometer\.core\.lang.*, ^io\.micrometer\.shaded.*, ^org\.flywaydb\.core\.internal.*, ^org\.jetbrains\.annotations.*, ^org\.testcontainers\.shaded.*" />
 			<property name="illegalClasses"
 				value="^com\.hazelcast\.util\.Base64, ^org\.junit\.rules\.ExpectedException, ^org\.mockito\.InjectMocks, ^org\.slf4j\.LoggerFactory, ^org.springframework.context.annotation.ScannedGenericBeanDefinition, ^reactor\.core\.support\.Assert"/>
 		</module>