├── .gitignore
├── LICENSE
├── README.md
├── api-gateway
├── Dockerfile
├── kubernetes
│ ├── deployment.yml
│ └── service.yml
├── pom.xml
└── src
│ └── main
│ ├── java
│ └── com
│ │ └── redhat
│ │ └── examples
│ │ ├── MySpringBean.java
│ │ ├── MySpringBootApplication.java
│ │ └── MySpringBootRouter.java
│ └── resources
│ ├── META-INF
│ ├── LICENSE.txt
│ └── NOTICE.txt
│ └── application.properties
├── backend
├── Dockerfile
├── kubernetes
│ ├── deployment.yml
│ └── service.yml
├── pom.xml
└── src
│ └── main
│ ├── java
│ └── com
│ │ └── redhat
│ │ └── examples
│ │ └── backend
│ │ ├── BackendHttpServlet.java
│ │ └── ResponseDTO.java
│ └── webapp
│ └── WEB-INF
│ └── beans.xml
├── hello-microprofile
├── Dockerfile
├── kubernetes
│ ├── deployment.yml
│ └── service.yml
├── pom.xml
└── src
│ └── main
│ ├── java
│ └── com
│ │ └── redhat
│ │ └── examples
│ │ └── hellomicroprofile
│ │ └── rest
│ │ ├── BackendDTO.java
│ │ ├── GreeterRestController.java
│ │ ├── HelloRestController.java
│ │ ├── HelloWorldEndpoint.java
│ │ └── RestApplication.java
│ └── resources
│ └── META-INF
│ ├── beans.xml
│ └── microprofile-config.properties
└── hello-springboot
├── Dockerfile
├── kubernetes
├── deployment.yml
└── service.yml
├── mvnw
├── mvnw.cmd
├── pom.xml
└── src
├── main
├── java
│ └── com
│ │ └── redhat
│ │ └── examples
│ │ └── hellospringboot
│ │ ├── BackendDTO.java
│ │ ├── GreeterRestController.java
│ │ ├── HelloRestController.java
│ │ └── HelloSpringbootApplication.java
└── resources
│ └── application.properties
└── test
└── java
└── com
└── redhat
└── examples
└── hellospringboot
└── HelloSpringbootApplicationTests.java
/.gitignore:
--------------------------------------------------------------------------------
1 | # Compiled class file
2 | *.class
3 | **/target/*
4 | *.iml
5 |
6 | #Hidden files
7 | .*
8 |
9 | # Log file
10 | *.log
11 |
12 | # BlueJ files
13 | *.ctxt
14 |
15 | # Mobile Tools for Java (J2ME)
16 | .mtj.tmp/
17 |
18 | # Package Files #
19 | *.jar
20 | *.war
21 | *.nar
22 | *.ear
23 | *.zip
24 | *.tar.gz
25 | *.rar
26 |
27 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
28 | hs_err_pid*
29 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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/README.md:
--------------------------------------------------------------------------------
1 | # microservices-book
2 | Source code for book Microservices for Java Developers - 2nd edition
3 |
--------------------------------------------------------------------------------
/api-gateway/Dockerfile:
--------------------------------------------------------------------------------
1 | FROM fabric8/java-alpine-openjdk8-jdk
2 | ENV JAVA_APP_JAR api-gateway-1.0.jar
3 | ENV AB_OFF true
4 | ENV JAEGER_SERVICE_NAME API-Gateway
5 | ADD target/api-gateway-1.0.jar /deployments/
--------------------------------------------------------------------------------
/api-gateway/kubernetes/deployment.yml:
--------------------------------------------------------------------------------
1 | apiVersion: extensions/v1beta1
2 | kind: Deployment
3 | metadata:
4 | name: api-gateway
5 | labels:
6 | app: api-gateway
7 | book: microservices4javadev
8 | version: v1
9 | spec:
10 | replicas: 1
11 | selector:
12 | matchLabels:
13 | app: api-gateway
14 | version: v1
15 | template:
16 | metadata:
17 | labels:
18 | app: api-gateway
19 | book: microservices4javadev
20 | version: v1
21 | spec:
22 | containers:
23 | - env:
24 | - name: JAVA_OPTIONS
25 | value: -Xms128m -Xmx256m -Djava.net.preferIPv4Stack=true -Djava.security.egd=file:///dev/./urandom
26 | - name: GATEWAY_SPRINGBOOTSVCURL
27 | value: hello-springboot:8080
28 | - name: GATEWAY_MICROPROFILESVCURL
29 | value: hello-microprofile:8080
30 | image: rhdevelopers/api-gateway:1.0
31 | imagePullPolicy: IfNotPresent
32 | livenessProbe:
33 | httpGet: # make an HTTP request
34 | port: 8080 # port to use
35 | path: /actuator/health # endpoint to hit
36 | scheme: HTTP # or HTTPS
37 | initialDelaySeconds: 20
38 | periodSeconds: 5
39 | timeoutSeconds: 1
40 | name: api-gateway
41 | ports:
42 | - containerPort: 8080
43 | name: http
44 | protocol: TCP
45 | readinessProbe:
46 | httpGet: # make an HTTP request
47 | port: 8080 # port to use
48 | path: /actuator/health # endpoint to hit
49 | scheme: HTTP # or HTTPS
50 | initialDelaySeconds: 10
51 | periodSeconds: 5
52 | timeoutSeconds: 1
53 |
--------------------------------------------------------------------------------
/api-gateway/kubernetes/service.yml:
--------------------------------------------------------------------------------
1 | apiVersion: v1
2 | kind: Service
3 | metadata:
4 | name: api-gateway
5 | labels:
6 | app: api-gateway
7 | book: microservices4javadev
8 | spec:
9 | ports:
10 | - name: http
11 | port: 8080
12 | selector:
13 | app: api-gateway
--------------------------------------------------------------------------------
/api-gateway/pom.xml:
--------------------------------------------------------------------------------
1 |
2 |
4 |
5 | 4.0.0
6 |
7 | com.redhat.examples
8 | api-gateway
9 | jar
10 | 1.0
11 |
12 | A Camel Spring Boot Route
13 |
14 |
15 | UTF-8
16 | UTF-8
17 | 2.1.0.RELEASE
18 | 1.8
19 | 1.8
20 |
21 |
22 |
23 |
24 |
25 |
26 | org.springframework.boot
27 | spring-boot-dependencies
28 | ${spring.boot-version}
29 | pom
30 | import
31 |
32 |
33 |
34 | org.apache.camel
35 | camel-spring-boot-dependencies
36 | 2.23.0
37 | pom
38 | import
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 | org.springframework.boot
48 | spring-boot-starter-web
49 |
50 |
51 | org.springframework.boot
52 | spring-boot-starter-tomcat
53 |
54 |
55 |
56 |
57 | org.springframework.boot
58 | spring-boot-starter-undertow
59 |
60 |
61 | org.springframework.boot
62 | spring-boot-starter-actuator
63 |
64 |
65 |
66 |
67 | org.apache.camel
68 | camel-spring-boot-starter
69 |
70 |
71 | org.apache.camel
72 | camel-stream-starter
73 |
74 |
75 | org.apache.camel
76 | camel-http4-starter
77 |
78 |
79 | org.apache.camel
80 | camel-servlet-starter
81 |
82 |
83 | org.apache.camel
84 | camel-jackson-starter
85 |
86 |
87 |
88 |
89 | org.apache.camel
90 | camel-opentracing-starter
91 |
92 |
93 | io.jaegertracing
94 | jaeger-tracerresolver
95 | 0.32.0
96 |
97 |
98 | io.jaegertracing
99 | jaeger-thrift
100 | 0.32.0
101 |
102 |
103 |
104 |
105 | org.springframework.boot
106 | spring-boot-starter-test
107 | test
108 |
109 |
110 | org.apache.camel
111 | camel-test-spring
112 | test
113 |
114 |
115 |
116 |
117 |
118 |
119 | org.springframework.boot
120 | spring-boot-maven-plugin
121 | ${spring.boot-version}
122 |
123 |
124 |
125 | repackage
126 |
127 |
128 |
129 |
130 |
131 |
132 |
133 |
134 |
--------------------------------------------------------------------------------
/api-gateway/src/main/java/com/redhat/examples/MySpringBean.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples;
2 |
3 | import org.springframework.beans.factory.annotation.Value;
4 | import org.springframework.stereotype.Component;
5 |
6 | /**
7 | * A bean that returns a message when you call the {@link #saySomething()} method.
8 | *
9 | * Uses @Component("myBean") to register this bean with the name myBean
10 | * that we use in the Camel route to lookup this bean.
11 | */
12 | @Component("myBean")
13 | public class MySpringBean {
14 |
15 | @Value("${greeting}")
16 | private String say;
17 |
18 | public String saySomething() {
19 | return say;
20 | }
21 |
22 | }
23 |
--------------------------------------------------------------------------------
/api-gateway/src/main/java/com/redhat/examples/MySpringBootApplication.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples;
2 |
3 | import org.apache.camel.opentracing.starter.*;
4 | import org.springframework.boot.SpringApplication;
5 | import org.springframework.boot.autoconfigure.SpringBootApplication;
6 | import org.springframework.context.annotation.*;
7 |
8 | @SpringBootApplication
9 | @CamelOpenTracing
10 | public class MySpringBootApplication {
11 |
12 | /**
13 | * A main method to start this application.
14 | */
15 | public static void main(String[] args) {
16 | SpringApplication.run(MySpringBootApplication.class, args);
17 | }
18 |
19 | }
20 |
--------------------------------------------------------------------------------
/api-gateway/src/main/java/com/redhat/examples/MySpringBootRouter.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples;
2 |
3 | import com.fasterxml.jackson.databind.*;
4 | import org.apache.camel.*;
5 | import org.apache.camel.builder.*;
6 | import org.apache.camel.model.dataformat.*;
7 | import org.apache.camel.model.rest.*;
8 | import org.apache.camel.opentracing.*;
9 | import org.apache.camel.util.toolbox.*;
10 | import org.springframework.beans.factory.annotation.*;
11 | import org.springframework.boot.context.properties.*;
12 | import org.springframework.stereotype.*;
13 | import org.springframework.stereotype.Component;
14 |
15 | import java.io.*;
16 | import java.lang.reflect.*;
17 | import java.util.*;
18 |
19 | /**
20 | * A simple Camel route that triggers from a timer and calls a bean and prints to system out.
21 | *
22 | * Use @Component to make Camel auto detect this route when starting.
23 | */
24 | @Component
25 | @ConfigurationProperties(prefix="gateway")
26 | public class MySpringBootRouter extends RouteBuilder {
27 |
28 | private String springbootsvcurl, microprofilesvcurl;
29 |
30 | private static final String REST_ENDPOINT=
31 | "http4:%s/api/greeting?httpClient.connectTimeout=1000" +
32 | "&bridgeEndpoint=true" +
33 | "©Headers=true" +
34 | "&connectionClose=true";
35 |
36 | @Override
37 | public void configure() {
38 | from("direct:microprofile").streamCaching()
39 | .toF(REST_ENDPOINT, microprofilesvcurl)
40 | .log("Response from Microprofile microservice: " +
41 | "${body}")
42 | .convertBodyTo(String.class)
43 | .end();
44 |
45 | from("direct:springboot").streamCaching()
46 | .toF(REST_ENDPOINT, springbootsvcurl)
47 | .log("Response from Spring Boot microservice: " +
48 | "${body}")
49 | .convertBodyTo(String.class)
50 | .end();
51 |
52 | rest()
53 | .get("/gateway").enableCORS(true)
54 | .route()
55 | .multicast(AggregationStrategies.flexible()
56 | .accumulateInCollection(ArrayList.class))
57 | .parallelProcessing()
58 | .to("direct:microprofile")
59 | .to("direct:springboot")
60 | .end()
61 | .marshal().json(JsonLibrary.Jackson)
62 | .convertBodyTo(String.class)
63 | .endRest();
64 | }
65 |
66 | public void setMicroprofilesvcurl(String microprofilesvcurl) {
67 | this.microprofilesvcurl = microprofilesvcurl;
68 | }
69 |
70 | public void setSpringbootsvcurl(String springbootsvcurl) {
71 | this.springbootsvcurl = springbootsvcurl;
72 | }
73 |
74 | }
75 |
--------------------------------------------------------------------------------
/api-gateway/src/main/resources/META-INF/LICENSE.txt:
--------------------------------------------------------------------------------
1 |
2 | Apache License
3 | Version 2.0, January 2004
4 | http://www.apache.org/licenses/
5 |
6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
7 |
8 | 1. Definitions.
9 |
10 | "License" shall mean the terms and conditions for use, reproduction,
11 | and distribution as defined by Sections 1 through 9 of this document.
12 |
13 | "Licensor" shall mean the copyright owner or entity authorized by
14 | the copyright owner that is granting the License.
15 |
16 | "Legal Entity" shall mean the union of the acting entity and all
17 | other entities that control, are controlled by, or are under common
18 | control with that entity. For the purposes of this definition,
19 | "control" means (i) the power, direct or indirect, to cause the
20 | direction or management of such entity, whether by contract or
21 | otherwise, or (ii) ownership of fifty percent (50%) or more of the
22 | outstanding shares, or (iii) beneficial ownership of such entity.
23 |
24 | "You" (or "Your") shall mean an individual or Legal Entity
25 | exercising permissions granted by this License.
26 |
27 | "Source" form shall mean the preferred form for making modifications,
28 | including but not limited to software source code, documentation
29 | source, and configuration files.
30 |
31 | "Object" form shall mean any form resulting from mechanical
32 | transformation or translation of a Source form, including but
33 | not limited to compiled object code, generated documentation,
34 | and conversions to other media types.
35 |
36 | "Work" shall mean the work of authorship, whether in Source or
37 | Object form, made available under the License, as indicated by a
38 | copyright notice that is included in or attached to the work
39 | (an example is provided in the Appendix below).
40 |
41 | "Derivative Works" shall mean any work, whether in Source or Object
42 | form, that is based on (or derived from) the Work and for which the
43 | editorial revisions, annotations, elaborations, or other modifications
44 | represent, as a whole, an original work of authorship. For the purposes
45 | of this License, Derivative Works shall not include works that remain
46 | separable from, or merely link (or bind by name) to the interfaces of,
47 | the Work and Derivative Works thereof.
48 |
49 | "Contribution" shall mean any work of authorship, including
50 | the original version of the Work and any modifications or additions
51 | to that Work or Derivative Works thereof, that is intentionally
52 | submitted to Licensor for inclusion in the Work by the copyright owner
53 | or by an individual or Legal Entity authorized to submit on behalf of
54 | the copyright owner. For the purposes of this definition, "submitted"
55 | means any form of electronic, verbal, or written communication sent
56 | to the Licensor or its representatives, including but not limited to
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61 | designated in writing by the copyright owner as "Not a Contribution."
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64 | on behalf of whom a Contribution has been received by Licensor and
65 | subsequently incorporated within the Work.
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68 | this License, each Contributor hereby grants to You a perpetual,
69 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable
70 | copyright license to reproduce, prepare Derivative Works of,
71 | publicly display, publicly perform, sublicense, and distribute the
72 | Work and such Derivative Works in Source or Object form.
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75 | this License, each Contributor hereby grants to You a perpetual,
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77 | (except as stated in this section) patent license to make, have made,
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129 | the conditions stated in this License.
130 |
131 | 5. Submission of Contributions. Unless You explicitly state otherwise,
132 | any Contribution intentionally submitted for inclusion in the Work
133 | by You to the Licensor shall be under the terms and conditions of
134 | this License, without any additional terms or conditions.
135 | Notwithstanding the above, nothing herein shall supersede or modify
136 | the terms of any separate license agreement you may have executed
137 | with Licensor regarding such Contributions.
138 |
139 | 6. Trademarks. This License does not grant permission to use the trade
140 | names, trademarks, service marks, or product names of the Licensor,
141 | except as required for reasonable and customary use in describing the
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153 |
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155 | whether in tort (including negligence), contract, or otherwise,
156 | unless required by applicable law (such as deliberate and grossly
157 | negligent acts) or agreed to in writing, shall any Contributor be
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192 | Licensed under the Apache License, Version 2.0 (the "License");
193 | you may not use this file except in compliance with the License.
194 | You may obtain a copy of the License at
195 |
196 | http://www.apache.org/licenses/LICENSE-2.0
197 |
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--------------------------------------------------------------------------------
/api-gateway/src/main/resources/META-INF/NOTICE.txt:
--------------------------------------------------------------------------------
1 | =========================================================================
2 | == NOTICE file corresponding to the section 4 d of ==
3 | == the Apache License, Version 2.0, ==
4 | == in this case for the Apache Camel distribution. ==
5 | =========================================================================
6 |
7 | This product includes software developed by
8 | The Apache Software Foundation (http://www.apache.org/).
9 |
10 | Please read the different LICENSE files present in the licenses directory of
11 | this distribution.
12 |
--------------------------------------------------------------------------------
/api-gateway/src/main/resources/application.properties:
--------------------------------------------------------------------------------
1 | # the name of Camel
2 | camel.springboot.name = MyCamel
3 |
4 | # what to say
5 | greeting = Hello World
6 |
7 | # how often to trigger the timer
8 | timer.period = 2000
9 |
10 | # to automatic shutdown the JVM after a period of time
11 | #camel.springboot.duration-max-seconds=60
12 | #camel.springboot.duration-max-messages=100
13 |
14 | # add for example: &repeatCount=5 to the timer endpoint to make Camel idle
15 | #camel.springboot.duration-max-idle-seconds=15
16 |
17 | # expose actuator endpoint via HTTP
18 | management.endpoints.web.exposure.include=info,health,camelroutes
19 |
20 | # turn on actuator health check
21 | management.endpoint.health.enabled = true
22 |
23 | # allow to obtain basic information about camel routes (read only mode)
24 | management.endpoint.camelroutes.enabled = true
25 | management.endpoint.camelroutes.read-only = true
26 |
27 | # to configure logging levels
28 | #logging.level.org.springframework = INFO
29 | #logging.level.org.apache.camel.spring.boot = INFO
30 | #logging.level.org.apache.camel.impl = DEBUG
31 | #logging.level.sample.camel = DEBUG
32 |
33 | gateway.springbootsvcurl=localhost:8180
34 | gateway.microprofilesvcurl=localhost:8280
35 |
36 | # to reconfigure the camel servlet context-path mapping to use /api/* instead of /camel/*
37 | camel.component.servlet.mapping.context-path=/api/*
38 |
--------------------------------------------------------------------------------
/backend/Dockerfile:
--------------------------------------------------------------------------------
1 | FROM jboss/wildfly:10.0.0.Final
2 | ENV JAEGER_SERVICE_NAME backend
3 | ADD target/ROOT.war /opt/jboss/wildfly/standalone/deployments/
--------------------------------------------------------------------------------
/backend/kubernetes/deployment.yml:
--------------------------------------------------------------------------------
1 | apiVersion: extensions/v1beta1
2 | kind: Deployment
3 | metadata:
4 | name: backend
5 | labels:
6 | app: backend
7 | book: microservices4javadev
8 | version: v1
9 | spec:
10 | replicas: 1
11 | selector:
12 | matchLabels:
13 | app: backend
14 | version: v1
15 | template:
16 | metadata:
17 | labels:
18 | app: backend
19 | book: microservices4javadev
20 | version: v1
21 | spec:
22 | containers:
23 | - env:
24 | - name: JAVA_OPTS
25 | value: -Xmx256m
26 | image: rhdevelopers/backend:1.0
27 | imagePullPolicy: IfNotPresent
28 | livenessProbe:
29 | httpGet: # make an HTTP request
30 | port: 8080 # port to use
31 | path: /api/backend # endpoint to hit
32 | scheme: HTTP # or HTTPS
33 | initialDelaySeconds: 20
34 | periodSeconds: 5
35 | timeoutSeconds: 1
36 | name: backend
37 | ports:
38 | - containerPort: 8080
39 | name: http
40 | protocol: TCP
41 | readinessProbe:
42 | httpGet: # make an HTTP request
43 | port: 8080 # port to use
44 | path: /api/backend # endpoint to hit
45 | scheme: HTTP # or HTTPS
46 | initialDelaySeconds: 10
47 | periodSeconds: 5
48 | timeoutSeconds: 1
49 |
--------------------------------------------------------------------------------
/backend/kubernetes/service.yml:
--------------------------------------------------------------------------------
1 | apiVersion: v1
2 | kind: Service
3 | metadata:
4 | name: backend
5 | labels:
6 | app: backend
7 | book: microservices4javadev
8 | spec:
9 | ports:
10 | - name: http
11 | port: 8080
12 | selector:
13 | app: backend
--------------------------------------------------------------------------------
/backend/pom.xml:
--------------------------------------------------------------------------------
1 |
2 |
18 |
20 | 4.0.0
21 |
22 | com.redhat.examples
23 | backend
24 | 1.0
25 | war
26 |
27 |
28 |
29 |
31 |
33 | UTF-8
34 |
35 |
36 | 2.0.0.Final
37 |
38 |
40 | 8.2.2.Final
41 |
42 |
43 | 3.1
44 | 2.16
45 | 2.5
46 |
47 |
48 | 1.8
49 | 1.8
50 |
51 |
52 | 2.9.8
53 |
54 |
55 |
56 |
57 |
58 |
66 |
67 | org.wildfly.bom
68 | jboss-javaee-7.0-with-tools
69 | ${version.jboss.bom}
70 | pom
71 | import
72 |
73 |
74 |
75 |
76 |
77 |
78 |
80 |
81 |
83 |
84 | javax.enterprise
85 | cdi-api
86 | provided
87 |
88 |
89 |
91 |
92 | org.jboss.spec.javax.servlet
93 | jboss-servlet-api_3.1_spec
94 | provided
95 |
96 |
97 |
99 |
100 | org.jboss.spec.javax.annotation
101 | jboss-annotations-api_1.2_spec
102 | provided
103 |
104 |
105 |
106 |
107 |
108 | com.fasterxml.jackson.core
109 | jackson-databind
110 | ${jackson-version}
111 |
112 |
113 |
114 |
115 | io.jaegertracing
116 | jaeger-client
117 | 0.32.0
118 |
119 |
120 |
121 |
122 |
123 |
125 | ROOT
126 |
127 |
128 | maven-war-plugin
129 | ${version.war.plugin}
130 |
131 |
132 | false
133 |
134 |
135 |
136 |
137 |
138 | org.wildfly.plugins
139 | wildfly-maven-plugin
140 | ${version.wildfly.maven.plugin}
141 |
142 |
143 | backend
144 |
145 |
146 |
147 |
148 |
149 |
150 |
151 |
152 |
154 |
156 | default
157 |
158 | true
159 |
160 |
161 |
162 |
163 | maven-surefire-plugin
164 | ${version.surefire.plugin}
165 |
166 | true
167 |
168 |
169 |
170 |
171 |
172 |
173 |
174 |
175 |
--------------------------------------------------------------------------------
/backend/src/main/java/com/redhat/examples/backend/BackendHttpServlet.java:
--------------------------------------------------------------------------------
1 | /**
2 | * Licensed to the Apache Software Foundation (ASF) under one or more
3 | * contributor license agreements. See the NOTICE file distributed with
4 | * this work for additional information regarding copyright ownership.
5 | * The ASF licenses this file to You under the Apache License, Version 2.0
6 | * (the "License"); you may not use this file except in compliance with
7 | * the License. You may obtain a copy of the License at
8 | *
9 | * http://www.apache.org/licenses/LICENSE-2.0
10 | *
11 | * Unless required by applicable law or agreed to in writing, software
12 | * distributed under the License is distributed on an "AS IS" BASIS,
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 | * See the License for the specific language governing permissions and
15 | * limitations under the License.
16 | */
17 | package com.redhat.examples.backend;
18 |
19 | import com.fasterxml.jackson.databind.*;
20 | import io.opentracing.*;
21 | import io.opentracing.contrib.tracerresolver.*;
22 |
23 | import io.opentracing.propagation.*;
24 |
25 | import javax.servlet.*;
26 | import javax.servlet.annotation.*;
27 | import javax.servlet.http.*;
28 | import java.io.*;
29 | import java.net.*;
30 | import java.util.*;
31 |
32 | /**
33 | * Created by
34 | * rafabene
35 | * http://christianposta.com/blog.
41 | */
42 | @WebServlet(urlPatterns = {"/api/backend"})
43 | public class BackendHttpServlet extends HttpServlet {
44 |
45 | private Tracer tracer = TracerResolver.resolveTracer();
46 |
47 | @Override
48 | protected void doGet(HttpServletRequest req, HttpServletResponse resp)
49 | throws ServletException, IOException {
50 |
51 | //Place the HTTP headers in a Hashmap
52 | final HashMap headers = new HashMap();
53 | Enumeration headerNames = req.getHeaderNames();
54 | while (headerNames.hasMoreElements()){
55 | String name = headerNames.nextElement();
56 | String value = req.getHeader(name);
57 | headers.put(name, value);
58 | }
59 | //Extract the Parent Span from the headers
60 | SpanContext parentSpan = tracer
61 | .extract(Format.Builtin.HTTP_HEADERS,
62 | new TextMapExtractAdapter(headers));
63 |
64 | //Start a new Span as a Child of the Parent Span
65 | Scope scope = tracer
66 | .buildSpan("backend-servlet")
67 | .asChildOf(parentSpan)
68 | .startActive(true);
69 |
70 | resp.setContentType("application/json");
71 |
72 | ObjectMapper mapper = new ObjectMapper();
73 | String greeting = req.getParameter("greeting");
74 |
75 | ResponseDTO response = new ResponseDTO();
76 | response.setGreeting(greeting +
77 | " from cluster Backend");
78 | response.setTime(System.currentTimeMillis());
79 | response.setIp(getIp());
80 |
81 | PrintWriter out = resp.getWriter();
82 | mapper.writerWithDefaultPrettyPrinter()
83 | .writeValue(out, response);
84 |
85 | scope.span().finish();
86 | }
87 |
88 | private String getIp() {
89 | String hostname = null;
90 | try {
91 | hostname = InetAddress.getLocalHost().getHostAddress();
92 | } catch (UnknownHostException e) {
93 | hostname = "unknown";
94 | }
95 | return hostname;
96 | }
97 | }
98 |
--------------------------------------------------------------------------------
/backend/src/main/java/com/redhat/examples/backend/ResponseDTO.java:
--------------------------------------------------------------------------------
1 | /**
2 | * Licensed to the Apache Software Foundation (ASF) under one or more
3 | * contributor license agreements. See the NOTICE file distributed with
4 | * this work for additional information regarding copyright ownership.
5 | * The ASF licenses this file to You under the Apache License, Version 2.0
6 | * (the "License"); you may not use this file except in compliance with
7 | * the License. You may obtain a copy of the License at
8 | *
9 | * http://www.apache.org/licenses/LICENSE-2.0
10 | *
11 | * Unless required by applicable law or agreed to in writing, software
12 | * distributed under the License is distributed on an "AS IS" BASIS,
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 | * See the License for the specific language governing permissions and
15 | * limitations under the License.
16 | */
17 | package com.redhat.examples.backend;
18 |
19 | /**
20 | * Created by
21 | * rafabene
22 | * http://christianposta.com/blog.
28 | */
29 | public class ResponseDTO {
30 | private String greeting;
31 | private long time;
32 | private String ip;
33 |
34 | public String getGreeting() {
35 | return greeting;
36 | }
37 |
38 | public void setGreeting(String greeting) {
39 | this.greeting = greeting;
40 | }
41 |
42 | public long getTime() {
43 | return time;
44 | }
45 |
46 | public void setTime(long time) {
47 | this.time = time;
48 | }
49 |
50 | public String getIp() {
51 | return ip;
52 | }
53 |
54 | public void setIp(String ip) {
55 | this.ip = ip;
56 | }
57 | }
--------------------------------------------------------------------------------
/backend/src/main/webapp/WEB-INF/beans.xml:
--------------------------------------------------------------------------------
1 |
2 |
18 |
19 |
23 |
24 |
--------------------------------------------------------------------------------
/hello-microprofile/Dockerfile:
--------------------------------------------------------------------------------
1 | FROM fabric8/java-alpine-openjdk8-jdk
2 | ENV JAVA_APP_JAR demo-thorntail.jar
3 | ENV AB_OFF true
4 | ENV JAEGER_SERVICE_NAME hello-microprofile
5 | ADD target/demo-thorntail.jar /deployments/
--------------------------------------------------------------------------------
/hello-microprofile/kubernetes/deployment.yml:
--------------------------------------------------------------------------------
1 | apiVersion: extensions/v1beta1
2 | kind: Deployment
3 | metadata:
4 | name: hello-microprofile
5 | labels:
6 | app: hello-microprofile
7 | book: microservices4javadev
8 | version: v1
9 | spec:
10 | replicas: 1
11 | selector:
12 | matchLabels:
13 | app: hello-microprofile
14 | version: v1
15 | template:
16 | metadata:
17 | labels:
18 | app: hello-microprofile
19 | book: microservices4javadev
20 | version: v1
21 | spec:
22 | containers:
23 | - env:
24 | - name: JAVA_OPTIONS
25 | value: -Xms128m -Xmx256m -Djava.net.preferIPv4Stack=true -Djava.security.egd=file:///dev/./urandom
26 | - name: GREETING_BACKENDSERVICEHOST
27 | value: backend
28 | image: rhdevelopers/hello-microprofile:1.0
29 | imagePullPolicy: IfNotPresent
30 | livenessProbe:
31 | httpGet: # make an HTTP request
32 | port: 8080 # port to use
33 | path: /api/hello # endpoint to hit
34 | scheme: HTTP # or HTTPS
35 | initialDelaySeconds: 20
36 | periodSeconds: 5
37 | timeoutSeconds: 1
38 | name: hello-microprofile
39 | ports:
40 | - containerPort: 8080
41 | name: http
42 | protocol: TCP
43 | readinessProbe:
44 | httpGet: # make an HTTP request
45 | port: 8080 # port to use
46 | path: /api/hello # endpoint to hit
47 | scheme: HTTP # or HTTPS
48 | initialDelaySeconds: 10
49 | periodSeconds: 5
50 | timeoutSeconds: 1
51 |
--------------------------------------------------------------------------------
/hello-microprofile/kubernetes/service.yml:
--------------------------------------------------------------------------------
1 | apiVersion: v1
2 | kind: Service
3 | metadata:
4 | name: hello-microprofile
5 | labels:
6 | app: hello-microprofile
7 | book: microservices4javadev
8 | spec:
9 | ports:
10 | - name: http
11 | port: 8080
12 | selector:
13 | app: hello-microprofile
--------------------------------------------------------------------------------
/hello-microprofile/pom.xml:
--------------------------------------------------------------------------------
1 |
2 |
4 | 4.0.0
5 | com.redhat.examples
6 | hello-microprofile
7 | Thorntail Example
8 | 1.0.0-SNAPSHOT
9 | war
10 |
11 |
12 | 2.2.1.Final
13 | 1.8
14 | 1.8
15 | false
16 | UTF-8
17 |
18 |
19 |
20 |
21 |
22 | io.thorntail
23 | bom-all
24 | ${version.thorntail}
25 | import
26 | pom
27 |
28 |
29 |
30 |
31 |
32 | demo
33 |
34 |
35 | io.thorntail
36 | thorntail-maven-plugin
37 | ${version.thorntail}
38 |
39 |
40 |
41 |
42 | package
43 |
44 |
45 |
46 |
47 |
48 |
49 |
50 |
51 |
52 | io.thorntail
53 | microprofile-config
54 |
55 |
56 |
57 | io.thorntail
58 | microprofile-metrics
59 |
60 |
61 |
62 | io.thorntail
63 | jaxrs
64 |
65 |
66 |
67 | io.thorntail
68 | microprofile-fault-tolerance
69 |
70 |
71 |
72 |
73 | io.thorntail
74 | microprofile-opentracing
75 |
76 |
77 | io.thorntail
78 | jaeger
79 |
80 |
81 |
82 |
83 |
--------------------------------------------------------------------------------
/hello-microprofile/src/main/java/com/redhat/examples/hellomicroprofile/rest/BackendDTO.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples.hellomicroprofile.rest;
2 |
3 | public class BackendDTO {
4 |
5 | private String greeting;
6 | private long time;
7 | private String ip;
8 |
9 | public String getGreeting() {
10 | return greeting;
11 | }
12 |
13 | public void setGreeting(String greeting) {
14 | this.greeting = greeting;
15 | }
16 |
17 | public long getTime() {
18 | return time;
19 | }
20 |
21 | public void setTime(long time) {
22 | this.time = time;
23 | }
24 |
25 | public String getIp() {
26 | return ip;
27 | }
28 |
29 | public void setIp(String ip) {
30 | this.ip = ip;
31 | }
32 | }
33 |
--------------------------------------------------------------------------------
/hello-microprofile/src/main/java/com/redhat/examples/hellomicroprofile/rest/GreeterRestController.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples.hellomicroprofile.rest;
2 |
3 | import io.opentracing.*;
4 | import io.opentracing.Scope;
5 | import io.opentracing.contrib.jaxrs2.client.*;
6 | import io.opentracing.contrib.tracerresolver.*;
7 | import io.opentracing.propagation.*;
8 | import org.eclipse.microprofile.config.inject.*;
9 | import org.eclipse.microprofile.faulttolerance.*;
10 | import org.eclipse.microprofile.opentracing.*;
11 |
12 | import javax.inject.*;
13 | import javax.ws.rs.*;
14 | import javax.ws.rs.client.*;
15 | import javax.ws.rs.core.*;
16 | import java.net.*;
17 | import java.util.*;
18 |
19 | @Path("/api")
20 | public class GreeterRestController {
21 |
22 | @Inject
23 | @ConfigProperty(name="greeting.saying", defaultValue = "Hello")
24 | private String saying;
25 |
26 | @Inject
27 | @ConfigProperty(name = "greeting.backendServiceHost", defaultValue = "localhost")
28 | private String backendServiceHost;
29 |
30 | @Inject
31 | @ConfigProperty(name = "greeting.backendServicePort", defaultValue = "8080")
32 | private int backendServicePort;
33 |
34 |
35 | @GET
36 | @Produces("text/plain")
37 | @Path("greeting")
38 | @CircuitBreaker
39 | @Timeout
40 | @Fallback(fallbackMethod = "fallback")
41 | @Traced
42 | public String greeting() {
43 |
44 | String backendServiceUrl = String.format("http://%s:%d",
45 | backendServiceHost,backendServicePort);
46 |
47 | System.out.println("Sending to: " + backendServiceUrl);
48 |
49 | Client client = ClientTracingRegistrar
50 | .configure(ClientBuilder.newBuilder()).build();
51 |
52 | BackendDTO backendDTO = client.target(backendServiceUrl)
53 | .path("api")
54 | .path("backend")
55 | .queryParam("greeting", saying)
56 | .request(MediaType.APPLICATION_JSON_TYPE)
57 | .get(BackendDTO.class);
58 |
59 | return backendDTO.getGreeting()
60 | + " at host: " + backendDTO.getIp();
61 | }
62 |
63 | public String fallback(){
64 | return saying + " at host " +
65 | System.getenv("HOSTNAME") + " - (fallback)";
66 | }
67 |
68 | }
69 |
--------------------------------------------------------------------------------
/hello-microprofile/src/main/java/com/redhat/examples/hellomicroprofile/rest/HelloRestController.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples.hellomicroprofile.rest;
2 |
3 | import org.eclipse.microprofile.config.*;
4 | import org.eclipse.microprofile.config.inject.*;
5 |
6 | import javax.inject.*;
7 | import javax.ws.rs.*;
8 | import java.net.*;
9 |
10 |
11 | @Path("/api")
12 | public class HelloRestController {
13 |
14 | @Inject
15 | @ConfigProperty(name="helloapp.saying")
16 | private String saying;
17 |
18 | @GET
19 | @Produces("text/plain")
20 | @Path("/hello")
21 | public String hello() {
22 | String hostname = null;
23 | try {
24 | hostname = InetAddress.getLocalHost()
25 | .getHostAddress();
26 | } catch (UnknownHostException e) {
27 | hostname = "unknown";
28 | }
29 | return saying + " " + hostname;
30 | }
31 |
32 | }
33 |
--------------------------------------------------------------------------------
/hello-microprofile/src/main/java/com/redhat/examples/hellomicroprofile/rest/HelloWorldEndpoint.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples.hellomicroprofile.rest;
2 |
3 |
4 | import javax.ws.rs.Path;
5 | import javax.ws.rs.core.Response;
6 | import javax.ws.rs.GET;
7 | import javax.ws.rs.Produces;
8 |
9 |
10 | @Path("/hello")
11 | public class HelloWorldEndpoint {
12 |
13 | @GET
14 | @Produces("text/plain")
15 | public Response doGet() {
16 | return Response.ok("Hello from Thorntail!").build();
17 | }
18 | }
19 |
--------------------------------------------------------------------------------
/hello-microprofile/src/main/java/com/redhat/examples/hellomicroprofile/rest/RestApplication.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples.hellomicroprofile.rest;
2 |
3 | import javax.ws.rs.ApplicationPath;
4 | import javax.ws.rs.core.Application;
5 |
6 | @ApplicationPath("/")
7 | public class RestApplication extends Application {
8 |
9 | }
10 |
--------------------------------------------------------------------------------
/hello-microprofile/src/main/resources/META-INF/beans.xml:
--------------------------------------------------------------------------------
1 |
2 |
8 |
--------------------------------------------------------------------------------
/hello-microprofile/src/main/resources/META-INF/microprofile-config.properties:
--------------------------------------------------------------------------------
1 | helloapp.saying=Guten Tag aus
--------------------------------------------------------------------------------
/hello-springboot/Dockerfile:
--------------------------------------------------------------------------------
1 | FROM fabric8/java-alpine-openjdk8-jdk
2 | ENV JAVA_APP_JAR hello-springboot-1.0.jar
3 | ENV AB_OFF true
4 | ENV JAEGER_SERVICE_NAME hello-springboot
5 | ADD target/hello-springboot-1.0.jar /deployments/
--------------------------------------------------------------------------------
/hello-springboot/kubernetes/deployment.yml:
--------------------------------------------------------------------------------
1 | apiVersion: extensions/v1beta1
2 | kind: Deployment
3 | metadata:
4 | name: hello-springboot
5 | labels:
6 | app: hello-springboot
7 | book: microservices4javadev
8 | version: v1
9 | spec:
10 | replicas: 1
11 | selector:
12 | matchLabels:
13 | app: hello-springboot
14 | version: v1
15 | template:
16 | metadata:
17 | labels:
18 | app: hello-springboot
19 | book: microservices4javadev
20 | version: v1
21 | spec:
22 | containers:
23 | - env:
24 | - name: JAVA_OPTIONS
25 | value: -Xms128m -Xmx256m -Djava.net.preferIPv4Stack=true -Djava.security.egd=file:///dev/./urandom
26 | - name: GREETING_BACKENDSERVICEHOST
27 | value: backend
28 | image: rhdevelopers/hello-springboot:1.0
29 | imagePullPolicy: IfNotPresent
30 | livenessProbe:
31 | httpGet: # make an HTTP request
32 | port: 8080 # port to use
33 | path: /actuator/health # endpoint to hit
34 | scheme: HTTP # or HTTPS
35 | initialDelaySeconds: 20
36 | periodSeconds: 5
37 | timeoutSeconds: 1
38 | name: hello-springboot
39 | ports:
40 | - containerPort: 8080
41 | name: http
42 | protocol: TCP
43 | readinessProbe:
44 | httpGet: # make an HTTP request
45 | port: 8080 # port to use
46 | path: /actuator/health # endpoint to hit
47 | scheme: HTTP # or HTTPS
48 | initialDelaySeconds: 10
49 | periodSeconds: 5
50 | timeoutSeconds: 1
51 |
--------------------------------------------------------------------------------
/hello-springboot/kubernetes/service.yml:
--------------------------------------------------------------------------------
1 | apiVersion: v1
2 | kind: Service
3 | metadata:
4 | name: hello-springboot
5 | labels:
6 | app: hello-springboot
7 | book: microservices4javadev
8 | spec:
9 | ports:
10 | - name: http
11 | port: 8080
12 | selector:
13 | app: hello-springboot
--------------------------------------------------------------------------------
/hello-springboot/mvnw:
--------------------------------------------------------------------------------
1 | #!/bin/sh
2 | # ----------------------------------------------------------------------------
3 | # Licensed to the Apache Software Foundation (ASF) under one
4 | # or more contributor license agreements. See the NOTICE file
5 | # distributed with this work for additional information
6 | # regarding copyright ownership. The ASF licenses this file
7 | # to you under the Apache License, Version 2.0 (the
8 | # "License"); you may not use this file except in compliance
9 | # with the License. You may obtain a copy of the License at
10 | #
11 | # http://www.apache.org/licenses/LICENSE-2.0
12 | #
13 | # Unless required by applicable law or agreed to in writing,
14 | # software distributed under the License is distributed on an
15 | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 | # KIND, either express or implied. See the License for the
17 | # specific language governing permissions and limitations
18 | # under the License.
19 | # ----------------------------------------------------------------------------
20 |
21 | # ----------------------------------------------------------------------------
22 | # Maven2 Start Up Batch script
23 | #
24 | # Required ENV vars:
25 | # ------------------
26 | # JAVA_HOME - location of a JDK home dir
27 | #
28 | # Optional ENV vars
29 | # -----------------
30 | # M2_HOME - location of maven2's installed home dir
31 | # MAVEN_OPTS - parameters passed to the Java VM when running Maven
32 | # e.g. to debug Maven itself, use
33 | # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
34 | # MAVEN_SKIP_RC - flag to disable loading of mavenrc files
35 | # ----------------------------------------------------------------------------
36 |
37 | if [ -z "$MAVEN_SKIP_RC" ] ; then
38 |
39 | if [ -f /etc/mavenrc ] ; then
40 | . /etc/mavenrc
41 | fi
42 |
43 | if [ -f "$HOME/.mavenrc" ] ; then
44 | . "$HOME/.mavenrc"
45 | fi
46 |
47 | fi
48 |
49 | # OS specific support. $var _must_ be set to either true or false.
50 | cygwin=false;
51 | darwin=false;
52 | mingw=false
53 | case "`uname`" in
54 | CYGWIN*) cygwin=true ;;
55 | MINGW*) mingw=true;;
56 | Darwin*) darwin=true
57 | # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
58 | # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
59 | if [ -z "$JAVA_HOME" ]; then
60 | if [ -x "/usr/libexec/java_home" ]; then
61 | export JAVA_HOME="`/usr/libexec/java_home`"
62 | else
63 | export JAVA_HOME="/Library/Java/Home"
64 | fi
65 | fi
66 | ;;
67 | esac
68 |
69 | if [ -z "$JAVA_HOME" ] ; then
70 | if [ -r /etc/gentoo-release ] ; then
71 | JAVA_HOME=`java-config --jre-home`
72 | fi
73 | fi
74 |
75 | if [ -z "$M2_HOME" ] ; then
76 | ## resolve links - $0 may be a link to maven's home
77 | PRG="$0"
78 |
79 | # need this for relative symlinks
80 | while [ -h "$PRG" ] ; do
81 | ls=`ls -ld "$PRG"`
82 | link=`expr "$ls" : '.*-> \(.*\)$'`
83 | if expr "$link" : '/.*' > /dev/null; then
84 | PRG="$link"
85 | else
86 | PRG="`dirname "$PRG"`/$link"
87 | fi
88 | done
89 |
90 | saveddir=`pwd`
91 |
92 | M2_HOME=`dirname "$PRG"`/..
93 |
94 | # make it fully qualified
95 | M2_HOME=`cd "$M2_HOME" && pwd`
96 |
97 | cd "$saveddir"
98 | # echo Using m2 at $M2_HOME
99 | fi
100 |
101 | # For Cygwin, ensure paths are in UNIX format before anything is touched
102 | if $cygwin ; then
103 | [ -n "$M2_HOME" ] &&
104 | M2_HOME=`cygpath --unix "$M2_HOME"`
105 | [ -n "$JAVA_HOME" ] &&
106 | JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
107 | [ -n "$CLASSPATH" ] &&
108 | CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
109 | fi
110 |
111 | # For Mingw, ensure paths are in UNIX format before anything is touched
112 | if $mingw ; then
113 | [ -n "$M2_HOME" ] &&
114 | M2_HOME="`(cd "$M2_HOME"; pwd)`"
115 | [ -n "$JAVA_HOME" ] &&
116 | JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
117 | # TODO classpath?
118 | fi
119 |
120 | if [ -z "$JAVA_HOME" ]; then
121 | javaExecutable="`which javac`"
122 | if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
123 | # readlink(1) is not available as standard on Solaris 10.
124 | readLink=`which readlink`
125 | if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
126 | if $darwin ; then
127 | javaHome="`dirname \"$javaExecutable\"`"
128 | javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
129 | else
130 | javaExecutable="`readlink -f \"$javaExecutable\"`"
131 | fi
132 | javaHome="`dirname \"$javaExecutable\"`"
133 | javaHome=`expr "$javaHome" : '\(.*\)/bin'`
134 | JAVA_HOME="$javaHome"
135 | export JAVA_HOME
136 | fi
137 | fi
138 | fi
139 |
140 | if [ -z "$JAVACMD" ] ; then
141 | if [ -n "$JAVA_HOME" ] ; then
142 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
143 | # IBM's JDK on AIX uses strange locations for the executables
144 | JAVACMD="$JAVA_HOME/jre/sh/java"
145 | else
146 | JAVACMD="$JAVA_HOME/bin/java"
147 | fi
148 | else
149 | JAVACMD="`which java`"
150 | fi
151 | fi
152 |
153 | if [ ! -x "$JAVACMD" ] ; then
154 | echo "Error: JAVA_HOME is not defined correctly." >&2
155 | echo " We cannot execute $JAVACMD" >&2
156 | exit 1
157 | fi
158 |
159 | if [ -z "$JAVA_HOME" ] ; then
160 | echo "Warning: JAVA_HOME environment variable is not set."
161 | fi
162 |
163 | CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
164 |
165 | # traverses directory structure from process work directory to filesystem root
166 | # first directory with .mvn subdirectory is considered project base directory
167 | find_maven_basedir() {
168 |
169 | if [ -z "$1" ]
170 | then
171 | echo "Path not specified to find_maven_basedir"
172 | return 1
173 | fi
174 |
175 | basedir="$1"
176 | wdir="$1"
177 | while [ "$wdir" != '/' ] ; do
178 | if [ -d "$wdir"/.mvn ] ; then
179 | basedir=$wdir
180 | break
181 | fi
182 | # workaround for JBEAP-8937 (on Solaris 10/Sparc)
183 | if [ -d "${wdir}" ]; then
184 | wdir=`cd "$wdir/.."; pwd`
185 | fi
186 | # end of workaround
187 | done
188 | echo "${basedir}"
189 | }
190 |
191 | # concatenates all lines of a file
192 | concat_lines() {
193 | if [ -f "$1" ]; then
194 | echo "$(tr -s '\n' ' ' < "$1")"
195 | fi
196 | }
197 |
198 | BASE_DIR=`find_maven_basedir "$(pwd)"`
199 | if [ -z "$BASE_DIR" ]; then
200 | exit 1;
201 | fi
202 |
203 | ##########################################################################################
204 | # Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
205 | # This allows using the maven wrapper in projects that prohibit checking in binary data.
206 | ##########################################################################################
207 | if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
208 | if [ "$MVNW_VERBOSE" = true ]; then
209 | echo "Found .mvn/wrapper/maven-wrapper.jar"
210 | fi
211 | else
212 | if [ "$MVNW_VERBOSE" = true ]; then
213 | echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
214 | fi
215 | jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar"
216 | while IFS="=" read key value; do
217 | case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
218 | esac
219 | done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
220 | if [ "$MVNW_VERBOSE" = true ]; then
221 | echo "Downloading from: $jarUrl"
222 | fi
223 | wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
224 |
225 | if command -v wget > /dev/null; then
226 | if [ "$MVNW_VERBOSE" = true ]; then
227 | echo "Found wget ... using wget"
228 | fi
229 | wget "$jarUrl" -O "$wrapperJarPath"
230 | elif command -v curl > /dev/null; then
231 | if [ "$MVNW_VERBOSE" = true ]; then
232 | echo "Found curl ... using curl"
233 | fi
234 | curl -o "$wrapperJarPath" "$jarUrl"
235 | else
236 | if [ "$MVNW_VERBOSE" = true ]; then
237 | echo "Falling back to using Java to download"
238 | fi
239 | javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
240 | if [ -e "$javaClass" ]; then
241 | if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
242 | if [ "$MVNW_VERBOSE" = true ]; then
243 | echo " - Compiling MavenWrapperDownloader.java ..."
244 | fi
245 | # Compiling the Java class
246 | ("$JAVA_HOME/bin/javac" "$javaClass")
247 | fi
248 | if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
249 | # Running the downloader
250 | if [ "$MVNW_VERBOSE" = true ]; then
251 | echo " - Running MavenWrapperDownloader.java ..."
252 | fi
253 | ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
254 | fi
255 | fi
256 | fi
257 | fi
258 | ##########################################################################################
259 | # End of extension
260 | ##########################################################################################
261 |
262 | export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
263 | if [ "$MVNW_VERBOSE" = true ]; then
264 | echo $MAVEN_PROJECTBASEDIR
265 | fi
266 | MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
267 |
268 | # For Cygwin, switch paths to Windows format before running java
269 | if $cygwin; then
270 | [ -n "$M2_HOME" ] &&
271 | M2_HOME=`cygpath --path --windows "$M2_HOME"`
272 | [ -n "$JAVA_HOME" ] &&
273 | JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
274 | [ -n "$CLASSPATH" ] &&
275 | CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
276 | [ -n "$MAVEN_PROJECTBASEDIR" ] &&
277 | MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
278 | fi
279 |
280 | WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
281 |
282 | exec "$JAVACMD" \
283 | $MAVEN_OPTS \
284 | -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
285 | "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
286 | ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
287 |
--------------------------------------------------------------------------------
/hello-springboot/mvnw.cmd:
--------------------------------------------------------------------------------
1 | @REM ----------------------------------------------------------------------------
2 | @REM Licensed to the Apache Software Foundation (ASF) under one
3 | @REM or more contributor license agreements. See the NOTICE file
4 | @REM distributed with this work for additional information
5 | @REM regarding copyright ownership. The ASF licenses this file
6 | @REM to you under the Apache License, Version 2.0 (the
7 | @REM "License"); you may not use this file except in compliance
8 | @REM with the License. You may obtain a copy of the License at
9 | @REM
10 | @REM http://www.apache.org/licenses/LICENSE-2.0
11 | @REM
12 | @REM Unless required by applicable law or agreed to in writing,
13 | @REM software distributed under the License is distributed on an
14 | @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 | @REM KIND, either express or implied. See the License for the
16 | @REM specific language governing permissions and limitations
17 | @REM under the License.
18 | @REM ----------------------------------------------------------------------------
19 |
20 | @REM ----------------------------------------------------------------------------
21 | @REM Maven2 Start Up Batch script
22 | @REM
23 | @REM Required ENV vars:
24 | @REM JAVA_HOME - location of a JDK home dir
25 | @REM
26 | @REM Optional ENV vars
27 | @REM M2_HOME - location of maven2's installed home dir
28 | @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
29 | @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
30 | @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
31 | @REM e.g. to debug Maven itself, use
32 | @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
33 | @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
34 | @REM ----------------------------------------------------------------------------
35 |
36 | @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
37 | @echo off
38 | @REM set title of command window
39 | title %0
40 | @REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'
41 | @if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
42 |
43 | @REM set %HOME% to equivalent of $HOME
44 | if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
45 |
46 | @REM Execute a user defined script before this one
47 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
48 | @REM check for pre script, once with legacy .bat ending and once with .cmd ending
49 | if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
50 | if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
51 | :skipRcPre
52 |
53 | @setlocal
54 |
55 | set ERROR_CODE=0
56 |
57 | @REM To isolate internal variables from possible post scripts, we use another setlocal
58 | @setlocal
59 |
60 | @REM ==== START VALIDATION ====
61 | if not "%JAVA_HOME%" == "" goto OkJHome
62 |
63 | echo.
64 | echo Error: JAVA_HOME not found in your environment. >&2
65 | echo Please set the JAVA_HOME variable in your environment to match the >&2
66 | echo location of your Java installation. >&2
67 | echo.
68 | goto error
69 |
70 | :OkJHome
71 | if exist "%JAVA_HOME%\bin\java.exe" goto init
72 |
73 | echo.
74 | echo Error: JAVA_HOME is set to an invalid directory. >&2
75 | echo JAVA_HOME = "%JAVA_HOME%" >&2
76 | echo Please set the JAVA_HOME variable in your environment to match the >&2
77 | echo location of your Java installation. >&2
78 | echo.
79 | goto error
80 |
81 | @REM ==== END VALIDATION ====
82 |
83 | :init
84 |
85 | @REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
86 | @REM Fallback to current working directory if not found.
87 |
88 | set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
89 | IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
90 |
91 | set EXEC_DIR=%CD%
92 | set WDIR=%EXEC_DIR%
93 | :findBaseDir
94 | IF EXIST "%WDIR%"\.mvn goto baseDirFound
95 | cd ..
96 | IF "%WDIR%"=="%CD%" goto baseDirNotFound
97 | set WDIR=%CD%
98 | goto findBaseDir
99 |
100 | :baseDirFound
101 | set MAVEN_PROJECTBASEDIR=%WDIR%
102 | cd "%EXEC_DIR%"
103 | goto endDetectBaseDir
104 |
105 | :baseDirNotFound
106 | set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
107 | cd "%EXEC_DIR%"
108 |
109 | :endDetectBaseDir
110 |
111 | IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
112 |
113 | @setlocal EnableExtensions EnableDelayedExpansion
114 | for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
115 | @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
116 |
117 | :endReadAdditionalConfig
118 |
119 | SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
120 | set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
121 | set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
122 |
123 | set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.4.2/maven-wrapper-0.4.2.jar"
124 | FOR /F "tokens=1,2 delims==" %%A IN (%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties) DO (
125 | IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
126 | )
127 |
128 | @REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
129 | @REM This allows using the maven wrapper in projects that prohibit checking in binary data.
130 | if exist %WRAPPER_JAR% (
131 | echo Found %WRAPPER_JAR%
132 | ) else (
133 | echo Couldn't find %WRAPPER_JAR%, downloading it ...
134 | echo Downloading from: %DOWNLOAD_URL%
135 | powershell -Command "(New-Object Net.WebClient).DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"
136 | echo Finished downloading %WRAPPER_JAR%
137 | )
138 | @REM End of extension
139 |
140 | %MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
141 | if ERRORLEVEL 1 goto error
142 | goto end
143 |
144 | :error
145 | set ERROR_CODE=1
146 |
147 | :end
148 | @endlocal & set ERROR_CODE=%ERROR_CODE%
149 |
150 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
151 | @REM check for post script, once with legacy .bat ending and once with .cmd ending
152 | if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
153 | if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
154 | :skipRcPost
155 |
156 | @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
157 | if "%MAVEN_BATCH_PAUSE%" == "on" pause
158 |
159 | if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
160 |
161 | exit /B %ERROR_CODE%
162 |
--------------------------------------------------------------------------------
/hello-springboot/pom.xml:
--------------------------------------------------------------------------------
1 |
2 |
4 | 4.0.0
5 | jar
6 |
7 | org.springframework.boot
8 | spring-boot-starter-parent
9 | 2.1.1.RELEASE
10 |
11 |
12 | com.redhat.examples
13 | hello-springboot
14 | 1.0
15 | hello-springboot
16 | Demo project for Spring Boot
17 |
18 |
19 | 1.8
20 |
21 |
22 |
23 |
24 | org.springframework.boot
25 | spring-boot-starter-web
26 |
27 |
28 |
29 | org.springframework.boot
30 | spring-boot-starter-actuator
31 |
32 |
33 |
34 | org.springframework.cloud
35 | spring-cloud-starter-netflix-hystrix
36 | 2.0.2.RELEASE
37 |
38 |
39 |
40 |
41 | io.opentracing.contrib
42 | opentracing-spring-web-starter
43 | 1.0.1
44 |
45 |
46 | io.jaegertracing
47 | jaeger-tracerresolver
48 | 0.32.0
49 |
50 |
51 | io.jaegertracing
52 | jaeger-thrift
53 | 0.32.0
54 |
55 |
56 |
57 |
58 | org.springframework.boot
59 | spring-boot-starter-test
60 | test
61 |
62 |
63 |
64 |
65 |
66 |
67 | org.springframework.boot
68 | spring-boot-maven-plugin
69 |
70 |
71 |
72 |
73 |
74 |
--------------------------------------------------------------------------------
/hello-springboot/src/main/java/com/redhat/examples/hellospringboot/BackendDTO.java:
--------------------------------------------------------------------------------
1 | /**
2 | * Licensed to the Apache Software Foundation (ASF) under one or more
3 | * contributor license agreements. See the NOTICE file distributed with
4 | * this work for additional information regarding copyright ownership.
5 | * The ASF licenses this file to You under the Apache License, Version 2.0
6 | * (the "License"); you may not use this file except in compliance with
7 | * the License. You may obtain a copy of the License at
8 | *
9 | * http://www.apache.org/licenses/LICENSE-2.0
10 | *
11 | * Unless required by applicable law or agreed to in writing, software
12 | * distributed under the License is distributed on an "AS IS" BASIS,
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 | * See the License for the specific language governing permissions and
15 | * limitations under the License.
16 | */
17 | package com.redhat.examples.hellospringboot;
18 |
19 | public class BackendDTO {
20 |
21 | private String greeting;
22 | private long time;
23 | private String ip;
24 |
25 | public String getGreeting() {
26 | return greeting;
27 | }
28 |
29 | public void setGreeting(String greeting) {
30 | this.greeting = greeting;
31 | }
32 |
33 | public long getTime() {
34 | return time;
35 | }
36 |
37 | public void setTime(long time) {
38 | this.time = time;
39 | }
40 |
41 | public String getIp() {
42 | return ip;
43 | }
44 |
45 | public void setIp(String ip) {
46 | this.ip = ip;
47 | }
48 | }
49 |
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/hello-springboot/src/main/java/com/redhat/examples/hellospringboot/GreeterRestController.java:
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1 | /**
2 | * Licensed to the Apache Software Foundation (ASF) under one or more
3 | * contributor license agreements. See the NOTICE file distributed with
4 | * this work for additional information regarding copyright ownership.
5 | * The ASF licenses this file to You under the Apache License, Version 2.0
6 | * (the "License"); you may not use this file except in compliance with
7 | * the License. You may obtain a copy of the License at
8 | *
9 | * http://www.apache.org/licenses/LICENSE-2.0
10 | *
11 | * Unless required by applicable law or agreed to in writing, software
12 | * distributed under the License is distributed on an "AS IS" BASIS,
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 | * See the License for the specific language governing permissions and
15 | * limitations under the License.
16 | */
17 | package com.redhat.examples.hellospringboot;
18 |
19 | import com.netflix.hystrix.contrib.javanica.annotation.*;
20 | import io.opentracing.*;
21 | import io.opentracing.contrib.spring.web.client.*;
22 | import io.opentracing.contrib.tracerresolver.*;
23 | import io.opentracing.propagation.*;
24 | import io.opentracing.tag.*;
25 | import org.springframework.beans.factory.annotation.*;
26 | import org.springframework.boot.context.properties.*;
27 | import org.springframework.boot.web.client.*;
28 | import org.springframework.context.annotation.*;
29 | import org.springframework.web.bind.annotation.*;
30 | import org.springframework.web.client.*;
31 |
32 | import javax.servlet.http.*;
33 | import java.util.*;
34 |
35 | @RestController
36 | @RequestMapping("/api")
37 | @ConfigurationProperties(prefix="greeting")
38 | public class GreeterRestController {
39 |
40 | private RestTemplate template = new RestTemplateBuilder().build();
41 |
42 | private String saying, backendServiceHost;
43 |
44 | private int backendServicePort;
45 |
46 | @RequestMapping(value = "/greeting",
47 | method = RequestMethod.GET, produces = "text/plain")
48 | @HystrixCommand(fallbackMethod = "fallback")
49 | public String greeting(){
50 | Tracer tracer = TracerResolver.resolveTracer();
51 |
52 | template.setInterceptors(Collections.singletonList(new TracingRestTemplateInterceptor(tracer)));
53 |
54 | String backendServiceUrl =
55 | String.format(
56 | "http://%s:%d/api/backend?greeting={greeting}",
57 | backendServiceHost, backendServicePort);
58 |
59 | System.out.println("Sending to: " + backendServiceUrl);
60 |
61 |
62 | BackendDTO response = template.getForObject(
63 | backendServiceUrl, BackendDTO.class, saying);
64 |
65 | return response.getGreeting() + " at host: " +
66 | response.getIp();
67 | }
68 |
69 | public String fallback(){
70 | return saying + " at host " +
71 | System.getenv("HOSTNAME") + " - (fallback)";
72 | }
73 |
74 | public void setSaying(String saying) {
75 | this.saying = saying;
76 | }
77 |
78 | public void setBackendServiceHost(String backendServiceHost) {
79 | this.backendServiceHost = backendServiceHost;
80 | }
81 |
82 | public void setBackendServicePort(int backendServicePort) {
83 | this.backendServicePort = backendServicePort;
84 | }
85 | }
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/hello-springboot/src/main/java/com/redhat/examples/hellospringboot/HelloRestController.java:
--------------------------------------------------------------------------------
1 | /**
2 | * Licensed to the Apache Software Foundation (ASF) under one or more
3 | * contributor license agreements. See the NOTICE file distributed with
4 | * this work for additional information regarding copyright ownership.
5 | * The ASF licenses this file to You under the Apache License, Version 2.0
6 | * (the "License"); you may not use this file except in compliance with
7 | * the License. You may obtain a copy of the License at
8 | *
9 | * http://www.apache.org/licenses/LICENSE-2.0
10 | *
11 | * Unless required by applicable law or agreed to in writing, software
12 | * distributed under the License is distributed on an "AS IS" BASIS,
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 | * See the License for the specific language governing permissions and
15 | * limitations under the License.
16 | */
17 | package com.redhat.examples.hellospringboot;
18 |
19 | import org.springframework.boot.context.properties.*;
20 | import org.springframework.web.bind.annotation.*;
21 |
22 | import java.net.*;
23 |
24 | @RestController
25 | @RequestMapping("/api")
26 | @ConfigurationProperties(prefix="helloapp")
27 | public class HelloRestController {
28 |
29 | private String saying;
30 |
31 | @RequestMapping(method = RequestMethod.GET, value = "/hello",
32 | produces = "text/plain")
33 | public String hello(){
34 | String hostname = null;
35 | try {
36 | hostname = InetAddress.getLocalHost()
37 | .getHostAddress();
38 | } catch (UnknownHostException e) {
39 | hostname = "unknown";
40 | }
41 | return saying + " " + hostname;
42 | }
43 |
44 | public void setSaying(String saying) {
45 | this.saying = saying;
46 | }
47 | }
48 |
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/hello-springboot/src/main/java/com/redhat/examples/hellospringboot/HelloSpringbootApplication.java:
--------------------------------------------------------------------------------
1 | /**
2 | * Licensed to the Apache Software Foundation (ASF) under one or more
3 | * contributor license agreements. See the NOTICE file distributed with
4 | * this work for additional information regarding copyright ownership.
5 | * The ASF licenses this file to You under the Apache License, Version 2.0
6 | * (the "License"); you may not use this file except in compliance with
7 | * the License. You may obtain a copy of the License at
8 | *
9 | * http://www.apache.org/licenses/LICENSE-2.0
10 | *
11 | * Unless required by applicable law or agreed to in writing, software
12 | * distributed under the License is distributed on an "AS IS" BASIS,
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 | * See the License for the specific language governing permissions and
15 | * limitations under the License.
16 | */
17 | package com.redhat.examples.hellospringboot;
18 |
19 | import io.opentracing.*;
20 | import io.opentracing.contrib.tracerresolver.*;
21 | import org.springframework.boot.SpringApplication;
22 | import org.springframework.boot.autoconfigure.SpringBootApplication;
23 | import org.springframework.cloud.client.circuitbreaker.*;
24 | import org.springframework.context.annotation.*;
25 |
26 | @EnableCircuitBreaker
27 | @SpringBootApplication
28 | public class HelloSpringbootApplication {
29 |
30 | public static void main(String[] args) {
31 | SpringApplication.run(HelloSpringbootApplication.class, args);
32 | }
33 |
34 | }
35 |
36 |
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/hello-springboot/src/main/resources/application.properties:
--------------------------------------------------------------------------------
1 | helloapp.saying=Guten Tag aus
2 |
3 | #Enable Management endpoints
4 | management.endpoints.web.exposure.include=beans,env,health,metrics,httptrace,mappings,
5 |
6 | greeting.saying=Hello Spring Boot
7 | greeting.backendServiceHost=localhost
8 | greeting.backendServicePort=8080
9 |
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/hello-springboot/src/test/java/com/redhat/examples/hellospringboot/HelloSpringbootApplicationTests.java:
--------------------------------------------------------------------------------
1 | package com.redhat.examples.hellospringboot;
2 |
3 | import org.junit.Test;
4 | import org.junit.runner.RunWith;
5 | import org.springframework.boot.test.context.SpringBootTest;
6 | import org.springframework.test.context.junit4.SpringRunner;
7 |
8 | @RunWith(SpringRunner.class)
9 | @SpringBootTest
10 | public class HelloSpringbootApplicationTests {
11 |
12 | @Test
13 | public void contextLoads() {
14 | }
15 |
16 | }
17 |
18 |
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