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new 0d5c790 health example - requires Camel 3.4 (#1321)
0d5c790 is described below
commit 0d5c790af209bee5353d1f266b3b7f5d72ebd19b
Author: Claus Ibsen <claus.ib...@gmail.com>
AuthorDate: Wed Jun 10 07:06:15 2020 +0200
health example - requires Camel 3.4 (#1321)
* health example - requires Camel 3.4
* Upgrade microprofile integration test to latest Camel 3.4 SNAPSHOT
* Upgrade observability example test to latest Camel 3.4 SNAPSHOT
---
examples/health/README.adoc | 78 ++++++++++++++++
examples/health/pom.xml | 103 +++++++++++++++++++++
.../java/org/acme/health/MonkeyHealthCheck.java | 62 +++++++++++++
.../main/java/org/acme/health/MyRouteBuilder.java | 42 +++++++++
.../src/main/resources/application.properties | 77 +++++++++++++++
.../org/acme/observability/ObservabilityTest.java | 3 +-
examples/pom.xml | 1 +
.../it/health/MicroProfileHealthTest.java | 9 +-
8 files changed, 370 insertions(+), 5 deletions(-)
diff --git a/examples/health/README.adoc b/examples/health/README.adoc
new file mode 100644
index 0000000..964c972
--- /dev/null
+++ b/examples/health/README.adoc
@@ -0,0 +1,78 @@
+== Camel Quarkus Example Health
+
+This example shows how to use Camel health-check with Quarkus.
+The example shows how you can build custom health-checks and have
+them automatic discovered by Camel and used as parts of its health-check
system.
+
+TIP: Check the
https://camel.apache.org/camel-quarkus/latest/first-steps.html[Camel Quarkus
User guide] for prerequisites
+and other general information.
+
+The example has two routes, a timer that calls a bean that flips a boolean that
+causes the custom health check to be in either UP or DOWN state.
+
+The 2nd route is on purpose made to fail on startup by configuring netty to an
unknown host.
+Camel supervising route controller will attempt to restart the route up till
10 times before exhausting.
+
+The routes health check will therefore report this route as DOWN until its
exhausted
+where the states are changed to UNKNOWN.
+
+The details can be seen at runtime from the calling the following url from a
web browser: http://localhost:8080/health
+
+=== Start in the Development mode
+
+[source,shell]
+----
+$ mvn clean compile quarkus:dev
+----
+
+The above command compiles the project, starts the application and lets the
Quarkus tooling watch for changes in your
+workspace. Any modifications in your project will automatically take effect in
the running application.
+
+TIP: Please refer to the Development mode section of
+https://camel.apache.org/camel-quarkus/latest/first-steps.html#_development_mode[Camel
Quarkus User guide] for more details.
+
+You can check the health check status by calling the following url from a web
browser: http://localhost:8080/health
+
+=== Package and run the application
+
+Once you are done with developing you may want to package and run the
application.
+
+TIP: Find more details about the JVM mode and Native mode in the Package and
run section of
+https://camel.apache.org/camel-quarkus/latest/first-steps.html#_package_and_run_the_application[Camel
Quarkus User guide]
+
+=== JVM mode
+
+[source,shell]
+----
+$ mvn clean package
+$ java -jar target/*-runner.jar
+...
+[io.quarkus] (main) Quarkus 1.3.2 started in 1.163s. Listening on:
http://[::]:8080
+----
+
+=== Native mode
+
+IMPORTANT: Native mode requires having GraalVM and other tools installed.
Please check the Prerequisites section
+of
https://camel.apache.org/camel-quarkus/latest/first-steps.html#_prerequisites[Camel
Quarkus User guide].
+
+To prepare a native executable using GraalVM, run the following command:
+
+[source,shell]
+----
+$ mvn clean package -Pnative
+$ ./target/*-runner
+...
+[io.quarkus] (main) Quarkus 1.3.2 started in 0.013s. Listening on:
http://[::]:8080
+...
+----
+
+=== Help and contributions
+
+If you hit any problem using Camel or have some feedback, then please
+https://camel.apache.org/support.html[let us know].
+
+We also love contributors, so
+https://camel.apache.org/contributing.html[get involved] :-)
+
+The Camel riders!
+
diff --git a/examples/health/pom.xml b/examples/health/pom.xml
new file mode 100644
index 0000000..52be628
--- /dev/null
+++ b/examples/health/pom.xml
@@ -0,0 +1,103 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+ Licensed to the Apache Software Foundation (ASF) under one or more
+ contributor license agreements. See the NOTICE file distributed with
+ this work for additional information regarding copyright ownership.
+ The ASF licenses this file to You 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
+
+ http://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.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
+ <parent>
+ <groupId>org.apache.camel.quarkus</groupId>
+ <artifactId>camel-quarkus-build-parent</artifactId>
+ <version>1.1.0-SNAPSHOT</version>
+ <relativePath>../../poms/build-parent/pom.xml</relativePath>
+ </parent>
+
+ <modelVersion>4.0.0</modelVersion>
+
+ <artifactId>camel-quarkus-examples-health</artifactId>
+ <name>Camel Quarkus :: Examples :: Health</name>
+ <description>Camel Quarkus Example :: Health Check</description>
+
+ <properties>
+ <!-- mvnd, a.k.a. Maven Daemon: https://github.com/gnodet/mvnd -->
+ <!-- The following rule tells mvnd to build the listed deployment
modules before this module. -->
+ <!-- This is important because mvnd builds modules in parallel by
default. The deployment modules are not -->
+ <!-- explicit dependencies of this module in the Maven sense, although
they are required by the Quarkus Maven plugin. -->
+ <!-- Please update rule whenever you change the dependencies of this
module by running -->
+ <!-- mvn process-resources -Pformat from the root directory -->
+
<mvnd.builder.rule>camel-quarkus-log-deployment,camel-quarkus-support-policy-deployment,camel-quarkus-timer-deployment</mvnd.builder.rule>
+ </properties>
+
+ <dependencies>
+ <dependency>
+ <groupId>io.quarkus</groupId>
+ <artifactId>quarkus-resteasy</artifactId>
+ </dependency>
+
+ <dependency>
+ <groupId>org.apache.camel.quarkus</groupId>
+ <artifactId>camel-quarkus-bean</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel.quarkus</groupId>
+ <artifactId>camel-quarkus-log</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel.quarkus</groupId>
+ <artifactId>camel-quarkus-netty</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel.quarkus</groupId>
+ <artifactId>camel-quarkus-timer</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.camel.quarkus</groupId>
+ <artifactId>camel-quarkus-microprofile-health</artifactId>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>io.quarkus</groupId>
+ <artifactId>quarkus-maven-plugin</artifactId>
+ <executions>
+ <execution>
+ <id>build</id>
+ <goals>
+ <goal>build</goal>
+ </goals>
+ </execution>
+ </executions>
+ </plugin>
+ </plugins>
+ </build>
+
+ <profiles>
+ <profile>
+ <id>native</id>
+ <activation>
+ <property>
+ <name>native</name>
+ </property>
+ </activation>
+ <properties>
+ <quarkus.package.type>native</quarkus.package.type>
+ </properties>
+ </profile>
+ </profiles>
+
+</project>
diff --git
a/examples/health/src/main/java/org/acme/health/MonkeyHealthCheck.java
b/examples/health/src/main/java/org/acme/health/MonkeyHealthCheck.java
new file mode 100644
index 0000000..479d60c
--- /dev/null
+++ b/examples/health/src/main/java/org/acme/health/MonkeyHealthCheck.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ * http://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.acme.health;
+
+import java.util.Map;
+
+import javax.enterprise.context.ApplicationScoped;
+
+import org.apache.camel.health.HealthCheckResultBuilder;
+import org.apache.camel.impl.health.AbstractHealthCheck;
+
+/**
+ * A chaos monkey health check that reports UP or DOWN in a chaotic way.
+ *
+ * This is a custom implementation of a Camel {@link
org.apache.camel.health.HealthCheck}
+ * which is automatic discovered if bound in the {@link
org.apache.camel.spi.Registry} and
+ * used as part of Camel's health-check system.
+ */
+@ApplicationScoped
+public class MonkeyHealthCheck extends AbstractHealthCheck {
+
+ private boolean up = true;
+
+ public MonkeyHealthCheck() {
+ super("custom", "monkey");
+ }
+
+ @Override
+ protected void doCall(HealthCheckResultBuilder builder, Map<String,
Object> options) {
+ builder.detail("monkey", "The chaos monkey was here");
+ if (up) {
+ builder.up();
+ } else {
+ builder.down();
+ }
+ }
+
+ public String chaos() {
+ up = !up;
+ return up ? "All is okay" : "Chaos monkey was here";
+ }
+
+ @Override
+ public boolean isReadiness() {
+ // only liveness probe
+ return false;
+ }
+}
diff --git a/examples/health/src/main/java/org/acme/health/MyRouteBuilder.java
b/examples/health/src/main/java/org/acme/health/MyRouteBuilder.java
new file mode 100644
index 0000000..88288db
--- /dev/null
+++ b/examples/health/src/main/java/org/acme/health/MyRouteBuilder.java
@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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
+ *
+ * http://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.acme.health;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.inject.Inject;
+
+import org.apache.camel.builder.RouteBuilder;
+
+@ApplicationScoped
+public class MyRouteBuilder extends RouteBuilder {
+
+ // we can inject the bean via this annotation
+ @Inject
+ MonkeyHealthCheck monkey;
+
+ @Override
+ public void configure() throws Exception {
+ from("timer:foo?period={{myPeriod}}").routeId("timer")
+ .bean(monkey, "chaos")
+ .log("${body}");
+
+ // this route is invalid and fails during startup
+ // the supervising route controller will take over and attempt
+ // to restart this route
+ from("netty:tcp:unknownhost").to("log:dummy").routeId("netty");
+ }
+}
diff --git a/examples/health/src/main/resources/application.properties
b/examples/health/src/main/resources/application.properties
new file mode 100644
index 0000000..f6ab0d7
--- /dev/null
+++ b/examples/health/src/main/resources/application.properties
@@ -0,0 +1,77 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements. See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You 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
+##
+## http://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.
+## ---------------------------------------------------------------------------
+#
+# Quarkus
+#
+quarkus.banner.enabled = false
+
+# to configure camel main
+# here you can configure options on camel quarkus
+camel.quakus.name = MyHealthyCamel
+
+# extended runtime statistics about bean introspection usage (java reflection)
+camel.main.bean-introspection-extended-statistics=true
+camel.main.bean-introspection-logging-level=INFO
+
+# enable supervised route controller which will startup routes in safe manner
+camel.main.route-controller-supervise-enabled = true
+# attempt up till 10 times to start a route (and exhaust if still failing)
+# when a route is exhausted then its taken out as being supervised and
+# will not take part of health-check either (UNKNOWN state)
+camel.main.route-controller-back-off-max-attempts = 10
+# when starting a route (and restarts) fails all attempts
+# then we can control whether the route should be influence the health-check
+# and report the route as either UNKNOWN or DOWN. Setting this option to true
+# will report it as DOWN otherwise its UNKNOWN
+###camel.main.route-controller-unhealthy-on-exhausted = true
+
+# enable health check (is automatic enabled if discovered on classpath)
+# global flag to enable/disable
+camel.health.enabled = true
+# context check is default included but we can turn it on|off
+camel.health.context-enabled = true
+# routes check is default included but we can turn it on|off
+camel.health.routes-enabled = true
+# registry check is default included but we can turn it on|off
+camel.health.registry-enabled = true
+
+# you can turn on or off individual routes as shown below
+### camel.heath.config[timer].parent = routes
+### camel.heath.config[timer].enabled = true
+### camel.heath.config[netty].check = routes
+### camel.heath.config[netty].enabled = false
+
+# and configure each individually
+camel.health.config[timer].parent = routes
+camel.health.config[timer].interval = 5s
+camel.health.config[netty].parent = routes
+camel.health.config[netty].interval = 20s
+camel.health.config[netty].failure-threshold = 10
+
+# find grained routes configuration per route (support wildcards)
+# (enabled is default true for discovered health-checks)
+### camel.health.config[*].enabled = true
+
+# allow 5 failures with 10s apart as slack to handle routes being flaky
+# however if after 5 failures then the state will be regarded as DOWN onwards
+# (the route can recover and the state will then be UP)
+###camel.health.config[*].parent = routes
+###camel.health.config[*].interval = 10s
+###camel.health.config[*].failure-threshold = 5
+
+# properties used in the route
+myPeriod = 10s
diff --git
a/examples/observability/src/test/java/org/acme/observability/ObservabilityTest.java
b/examples/observability/src/test/java/org/acme/observability/ObservabilityTest.java
index 4ebfc9e..d9a4d3c 100644
---
a/examples/observability/src/test/java/org/acme/observability/ObservabilityTest.java
+++
b/examples/observability/src/test/java/org/acme/observability/ObservabilityTest.java
@@ -59,7 +59,8 @@ public class ObservabilityTest {
.then()
.statusCode(200)
.body("status", Matchers.is("UP"),
- "checks.name",
containsInAnyOrder("camel-readiness-checks", "camel", "Uptime readiness check"),
+ "checks.name",
+ containsInAnyOrder("camel-readiness-checks",
"camel-context-check", "Uptime readiness check"),
"checks.data.custom-readiness-check",
containsInAnyOrder(null, "UP"));
}
}
diff --git a/examples/pom.xml b/examples/pom.xml
index cacb3e9..1ed0651 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -34,6 +34,7 @@
<modules>
<module>observability</module>
<module>http-log</module>
+ <module>health</module>
<module>rest-json</module>
<module>timer-log</module>
<module>timer-log-cdi</module>
diff --git
a/integration-tests/microprofile/src/test/java/org/apache/camel/quarkus/component/microprofile/it/health/MicroProfileHealthTest.java
b/integration-tests/microprofile/src/test/java/org/apache/camel/quarkus/component/microprofile/it/health/MicroProfileHealthTest.java
index bb44949..49e36ba 100644
---
a/integration-tests/microprofile/src/test/java/org/apache/camel/quarkus/component/microprofile/it/health/MicroProfileHealthTest.java
+++
b/integration-tests/microprofile/src/test/java/org/apache/camel/quarkus/component/microprofile/it/health/MicroProfileHealthTest.java
@@ -35,7 +35,8 @@ class MicroProfileHealthTest {
.header("Content-Type", containsString("charset=UTF-8"))
.body("status", is("UP"),
"checks.status", containsInAnyOrder("UP", "UP", "UP"),
- "checks.name",
containsInAnyOrder("camel-readiness-checks", "camel-liveness-checks", "camel"),
+ "checks.name",
+ containsInAnyOrder("camel-readiness-checks",
"camel-liveness-checks", "camel-context-check"),
"checks.data.contextStatus", containsInAnyOrder(null,
null, "Started"),
"checks.data.'route:healthyRoute'",
containsInAnyOrder(null, null, "UP"),
"checks.data.name", containsInAnyOrder(null, null,
"quarkus-camel-example"));
@@ -54,7 +55,7 @@ class MicroProfileHealthTest {
.body("status", is("DOWN"),
"checks.status", containsInAnyOrder("DOWN", "UP",
"DOWN"),
"checks.name",
- containsInAnyOrder("camel-readiness-checks",
"camel", "camel-liveness-checks"),
+ containsInAnyOrder("camel-readiness-checks",
"camel-context-check", "camel-liveness-checks"),
"checks.data.contextStatus",
containsInAnyOrder(null, null, "Started"),
"checks.data.name",
containsInAnyOrder(null, null,
"quarkus-camel-example"));
@@ -107,7 +108,7 @@ class MicroProfileHealthTest {
.header("Content-Type", containsString("charset=UTF-8"))
.body("status", is("UP"),
"checks.status", containsInAnyOrder("UP", "UP"),
- "checks.name",
containsInAnyOrder("camel-readiness-checks", "camel"),
+ "checks.name",
containsInAnyOrder("camel-readiness-checks", "camel-context-check"),
"checks.data.contextStatus", containsInAnyOrder(null,
"Started"),
"checks.data.name", containsInAnyOrder(null,
"quarkus-camel-example"),
"checks.data.test-readiness", containsInAnyOrder(null,
"UP"));
@@ -125,7 +126,7 @@ class MicroProfileHealthTest {
.header("Content-Type", containsString("charset=UTF-8"))
.body("status", is("DOWN"),
"checks.status", containsInAnyOrder("UP", "DOWN"),
- "checks.name",
containsInAnyOrder("camel-readiness-checks", "camel"),
+ "checks.name",
containsInAnyOrder("camel-readiness-checks", "camel-context-check"),
"checks.data.contextStatus",
containsInAnyOrder(null, "Started"),
"checks.data.name", containsInAnyOrder(null,
"quarkus-camel-example"),
"checks.data.test-readiness",
containsInAnyOrder(null, "UP"));
