Expose OS information as an InfoContributor

See gh-28907

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/info/OsInfoContributor.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2012-2021 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.boot.actuate.info;
+
+import org.springframework.boot.info.OsInfo;
+
+/**
+ * An {@link InfoContributor} that exposes {@link OsInfo}.
+ *
+ * @author Jonatan Ivanov
+ * @since 2.7.0
+ */
+public class OsInfoContributor implements InfoContributor {
+
+	private final OsInfo osInfo;
+
+	public OsInfoContributor() {
+		this.osInfo = new OsInfo();
+	}
+
+	@Override
+	public void contribute(Info.Builder builder) {
+		builder.withDetail("os", this.osInfo);
+	}
+
+}

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/info/OsInfoContributorTests.java

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+/*
+ * Copyright 2012-2021 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.boot.actuate.info;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.info.JavaInfo;
+import org.springframework.boot.info.OsInfo;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link OsInfoContributor}
+ *
+ * @author Jonatan Ivanov
+ */
+public class OsInfoContributorTests {
+
+	@Test
+	void osInfoShouldBeAdded() {
+		OsInfoContributor osInfoContributor = new OsInfoContributor();
+		Info.Builder builder = new Info.Builder();
+		osInfoContributor.contribute(builder);
+		Info info = builder.build();
+		assertThat(info.getDetails().get("os")).isInstanceOf(OsInfo.class);
+	}
+
+}