diff --git a/README.MD b/README.MD deleted file mode 100644 index 784b285..0000000 --- a/README.MD +++ /dev/null @@ -1,13 +0,0 @@ -This repository contains SpringBoot examples developed on **Spring Tool suite (STS)**. - -## **Branch Contents:** - -##### [1] [SpringBootMasterExample](https://github.com/rahulvaish/SpringBoot-Java/tree/SpringBootMasterClass) : SpringBoot examples with Eureka + MySQL + ConfigServer + APIGateway. -##### [2] [SpringBootMongo](https://github.com/rahulvaish/SpringBoot-Java/tree/SpringBootMongo) : SpringBoot example with MongoDB -##### [3] [SpringBootRedis](https://github.com/rahulvaish/SpringBoot-Java/tree/SpringBootRedis) : SpringBoot example with Redis -##### [4] [SpringBootActiveMQ](https://github.com/rahulvaish/ApacheActiveMQ) : SpringBoot example with ActiveMQ - Queues and Topics -##### [5] [SpringBootDocker](https://github.com/rahulvaish/SpringBoot-Java/tree/SpringBootDocker) : Hello Spring Boot example for Docker -##### [6] [SpringBootSwagger*](https://github.com/rahulvaish/SpringBoot-Java/tree/SpringBootSwagger) : SpringBoot example with Swagger UI. -##### [7] [SpringBootJPA & H2](https://github.com/rahulvaish/SpringBoot-Java/tree/SpringBootJPA) : SpringBoot example with MySQL | H2. - - diff --git a/README.md b/README.md new file mode 100644 index 0000000..c401243 --- /dev/null +++ b/README.md @@ -0,0 +1,35 @@ +On first Hit: + +image +image + +____________________________________________________________________ + + +When Service B is down: +
+Because sliding-window-size: 10 and failure-rate-threshold: 50 that means out of 10 if 5 failed the circuit will jump to Open state +image +image + +____________________________________________________________________ + + +In Open state, after 5 seconds it turns into Half Open state, now try 3 times (because wait-duration-in-open-state: 5000ms and permitted-number-of-calls-in-half-open-state: 3) +
+If 2/3 pass -> Circuit Open, else, Circuit Closed. +
+In my case, I kept Service B shut, so circuit got open: +
+image + + +____________________________________________________________________ + +Now, I turned the ServiceB up and running, and after 5 seconds (In Half Open state) I tried 3 times (because wait-duration-in-open-state: 5000ms and permitted-number-of-calls-in-half-open-state: 3) +
+All 3/3 pass -> Circuit Closed. +image +image + +Note: While n/3 hits were in attempt the circuit was in half open state. diff --git a/ServiceA/.DS_Store b/ServiceA/.DS_Store new file mode 100644 index 0000000..875eb6a Binary files /dev/null and b/ServiceA/.DS_Store differ diff --git a/ServiceA/.gitignore b/ServiceA/.gitignore new file mode 100644 index 0000000..c2065bc --- /dev/null +++ b/ServiceA/.gitignore @@ -0,0 +1,37 @@ +HELP.md +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ diff --git a/ServiceA/build.gradle b/ServiceA/build.gradle new file mode 100644 index 0000000..53d0e22 --- /dev/null +++ b/ServiceA/build.gradle @@ -0,0 +1,36 @@ +plugins { + id 'org.springframework.boot' version '2.7.5' + id 'io.spring.dependency-management' version '1.0.15.RELEASE' + id 'java' +} + +group = 'com.example.serviceA' +version = '0.0.1-SNAPSHOT' +sourceCompatibility = '17' + +repositories { + mavenCentral() +} + +ext { + set('springCloudVersion', "2021.0.4") +} + +dependencies { + implementation 'org.springframework.boot:spring-boot-starter-web' + implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j' + testImplementation 'org.springframework.boot:spring-boot-starter-test' + implementation group: 'org.springframework.boot', name: 'spring-boot-starter-aop', version: '2.7.5' + + implementation group: 'org.springframework.boot', name: 'spring-boot-starter-actuator', version: '2.7.5' +} + +dependencyManagement { + imports { + mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}" + } +} + +tasks.named('test') { + useJUnitPlatform() +} diff --git a/ServiceA/gradle/wrapper/gradle-wrapper.jar b/ServiceA/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/ServiceA/gradle/wrapper/gradle-wrapper.jar differ diff --git a/ServiceA/gradle/wrapper/gradle-wrapper.properties b/ServiceA/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..ae04661 --- /dev/null +++ b/ServiceA/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/ServiceA/gradlew b/ServiceA/gradlew new file mode 100755 index 0000000..a69d9cb --- /dev/null +++ b/ServiceA/gradlew @@ -0,0 +1,240 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original 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. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/ServiceA/gradlew.bat b/ServiceA/gradlew.bat new file mode 100644 index 0000000..53a6b23 --- /dev/null +++ b/ServiceA/gradlew.bat @@ -0,0 +1,91 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/ServiceA/settings.gradle b/ServiceA/settings.gradle new file mode 100644 index 0000000..2390d36 --- /dev/null +++ b/ServiceA/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'ServiceA' diff --git a/ServiceA/src/.DS_Store b/ServiceA/src/.DS_Store new file mode 100644 index 0000000..d6f6200 Binary files /dev/null and b/ServiceA/src/.DS_Store differ diff --git a/ServiceA/src/main/java/com/example/serviceA/ServiceAApplication.java b/ServiceA/src/main/java/com/example/serviceA/ServiceAApplication.java new file mode 100644 index 0000000..b41fe48 --- /dev/null +++ b/ServiceA/src/main/java/com/example/serviceA/ServiceAApplication.java @@ -0,0 +1,13 @@ +package com.example.serviceA; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class ServiceAApplication { + + public static void main(String[] args) { + SpringApplication.run(ServiceAApplication.class, args); + } + +} diff --git a/ServiceA/src/main/java/com/example/serviceA/controller/ServiceAController.java b/ServiceA/src/main/java/com/example/serviceA/controller/ServiceAController.java new file mode 100644 index 0000000..345becd --- /dev/null +++ b/ServiceA/src/main/java/com/example/serviceA/controller/ServiceAController.java @@ -0,0 +1,26 @@ +package com.example.serviceA.controller; + +import io.github.resilience4j.circuitbreaker.annotation.CircuitBreaker; +import io.github.resilience4j.ratelimiter.annotation.RateLimiter; +import io.github.resilience4j.retry.annotation.Retry; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RequestMapping; +import org.springframework.web.bind.annotation.RestController; +import org.springframework.web.client.RestTemplate; + +@RestController +@RequestMapping("/a") +public class ServiceAController { + + @GetMapping("/serviceA") + @CircuitBreaker(name = "serviceA", fallbackMethod = "serviceAFallBack") + public String serviceA(){ + RestTemplate restTemplate = new RestTemplate(); + return restTemplate.getForObject("http://localhost:8091/b/serviceB", String.class); + } + + public String serviceAFallBack(Exception e){ + return "FB for Service A"; + } + +} diff --git a/ServiceA/src/main/resources/application.yml b/ServiceA/src/main/resources/application.yml new file mode 100644 index 0000000..437dbae --- /dev/null +++ b/ServiceA/src/main/resources/application.yml @@ -0,0 +1,25 @@ +spring: + application.name: ServiceA + jackson.serialization.indent_output: true + +server: + port: 8090 + +management: + endpoints.web.exposure.include: + - '*' + endpoint.health.show-details: always + health.circuitbreakers.enabled: true + +resilience4j: + circuitbreaker: + configs: + default: + registerHealthIndicator: true + failure-rate-threshold: 50 + wait-duration-in-open-state: 5000ms + permitted-number-of-calls-in-half-open-state: 3 + sliding-window-type: COUNT_BASED + sliding-window-size: 10 + + diff --git a/ServiceA/src/test/java/com/example/serviceA/ServiceAApplicationTests.java b/ServiceA/src/test/java/com/example/serviceA/ServiceAApplicationTests.java new file mode 100644 index 0000000..17c572b --- /dev/null +++ b/ServiceA/src/test/java/com/example/serviceA/ServiceAApplicationTests.java @@ -0,0 +1,13 @@ +package com.example.serviceA; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; + +@SpringBootTest +class ServiceAApplicationTests { + + @Test + void contextLoads() { + } + +} diff --git a/ServiceB/.DS_Store b/ServiceB/.DS_Store new file mode 100644 index 0000000..f72b40b Binary files /dev/null and b/ServiceB/.DS_Store differ diff --git a/ServiceB/.gitignore b/ServiceB/.gitignore new file mode 100644 index 0000000..c2065bc --- /dev/null +++ b/ServiceB/.gitignore @@ -0,0 +1,37 @@ +HELP.md +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache +bin/ +!**/src/main/**/bin/ +!**/src/test/**/bin/ + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr +out/ +!**/src/main/**/out/ +!**/src/test/**/out/ + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ + +### VS Code ### +.vscode/ diff --git a/ServiceB/build.gradle b/ServiceB/build.gradle new file mode 100644 index 0000000..7213841 --- /dev/null +++ b/ServiceB/build.gradle @@ -0,0 +1,33 @@ +plugins { + id 'org.springframework.boot' version '2.7.5' + id 'io.spring.dependency-management' version '1.0.15.RELEASE' + id 'java' +} + +group = 'com.example.serviceB' +version = '0.0.1-SNAPSHOT' +sourceCompatibility = '17' + +repositories { + mavenCentral() +} + +ext { + set('springCloudVersion', "2021.0.4") +} + +dependencies { + implementation 'org.springframework.boot:spring-boot-starter-web' + implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j' + testImplementation 'org.springframework.boot:spring-boot-starter-test' +} + +dependencyManagement { + imports { + mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}" + } +} + +tasks.named('test') { + useJUnitPlatform() +} diff --git a/ServiceB/gradle/wrapper/gradle-wrapper.jar b/ServiceB/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..249e583 Binary files /dev/null and b/ServiceB/gradle/wrapper/gradle-wrapper.jar differ diff --git a/ServiceB/gradle/wrapper/gradle-wrapper.properties b/ServiceB/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..ae04661 --- /dev/null +++ b/ServiceB/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/ServiceB/gradlew b/ServiceB/gradlew new file mode 100755 index 0000000..a69d9cb --- /dev/null +++ b/ServiceB/gradlew @@ -0,0 +1,240 @@ +#!/bin/sh + +# +# Copyright © 2015-2021 the original 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. +# + +############################################################################## +# +# Gradle start up script for POSIX generated by Gradle. +# +# Important for running: +# +# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is +# noncompliant, but you have some other compliant shell such as ksh or +# bash, then to run this script, type that shell name before the whole +# command line, like: +# +# ksh Gradle +# +# Busybox and similar reduced shells will NOT work, because this script +# requires all of these POSIX shell features: +# * functions; +# * expansions «$var», «${var}», «${var:-default}», «${var+SET}», +# «${var#prefix}», «${var%suffix}», and «$( cmd )»; +# * compound commands having a testable exit status, especially «case»; +# * various built-in commands including «command», «set», and «ulimit». +# +# Important for patching: +# +# (2) This script targets any POSIX shell, so it avoids extensions provided +# by Bash, Ksh, etc; in particular arrays are avoided. +# +# The "traditional" practice of packing multiple parameters into a +# space-separated string is a well documented source of bugs and security +# problems, so this is (mostly) avoided, by progressively accumulating +# options in "$@", and eventually passing that to Java. +# +# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, +# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; +# see the in-line comments for details. +# +# There are tweaks for specific operating systems such as AIX, CygWin, +# Darwin, MinGW, and NonStop. +# +# (3) This script is generated from the Groovy template +# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt +# within the Gradle project. +# +# You can find Gradle at https://github.com/gradle/gradle/. +# +############################################################################## + +# Attempt to set APP_HOME + +# Resolve links: $0 may be a link +app_path=$0 + +# Need this for daisy-chained symlinks. +while + APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path + [ -h "$app_path" ] +do + ls=$( ls -ld "$app_path" ) + link=${ls#*' -> '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit + +APP_NAME="Gradle" +APP_BASE_NAME=${0##*/} + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + +# Collect all arguments for the java command; +# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of +# shell script including quotes and variable substitutions, so put them in +# double quotes to make sure that they get re-expanded; and +# * put everything else in single quotes, so that it's not re-expanded. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + org.gradle.wrapper.GradleWrapperMain \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/ServiceB/gradlew.bat b/ServiceB/gradlew.bat new file mode 100644 index 0000000..53a6b23 --- /dev/null +++ b/ServiceB/gradlew.bat @@ -0,0 +1,91 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/ServiceB/settings.gradle b/ServiceB/settings.gradle new file mode 100644 index 0000000..b70df8b --- /dev/null +++ b/ServiceB/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'ServiceB' diff --git a/ServiceB/src/.DS_Store b/ServiceB/src/.DS_Store new file mode 100644 index 0000000..1e022d4 Binary files /dev/null and b/ServiceB/src/.DS_Store differ diff --git a/ServiceB/src/main/java/com/example/serviceB/ServiceBApplication.java b/ServiceB/src/main/java/com/example/serviceB/ServiceBApplication.java new file mode 100644 index 0000000..68ecb45 --- /dev/null +++ b/ServiceB/src/main/java/com/example/serviceB/ServiceBApplication.java @@ -0,0 +1,13 @@ +package com.example.serviceB; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class ServiceBApplication { + + public static void main(String[] args) { + SpringApplication.run(ServiceBApplication.class, args); + } + +} diff --git a/ServiceB/src/main/java/com/example/serviceB/controller/ServiceBController.java b/ServiceB/src/main/java/com/example/serviceB/controller/ServiceBController.java new file mode 100644 index 0000000..8466f81 --- /dev/null +++ b/ServiceB/src/main/java/com/example/serviceB/controller/ServiceBController.java @@ -0,0 +1,17 @@ +package com.example.serviceB.controller; + +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RequestMapping; +import org.springframework.web.bind.annotation.RestController; +import org.springframework.web.client.RestTemplate; + +@RestController +@RequestMapping("/b") +public class ServiceBController { + + @GetMapping("/serviceB") + public String serviceB(){ + return "B"; + } + +} diff --git a/ServiceB/src/main/resources/application.properties b/ServiceB/src/main/resources/application.properties new file mode 100644 index 0000000..0fb2b78 --- /dev/null +++ b/ServiceB/src/main/resources/application.properties @@ -0,0 +1 @@ +server.port = 8091 diff --git a/ServiceB/src/test/java/com/example/serviceB/ServiceBApplicationTests.java b/ServiceB/src/test/java/com/example/serviceB/ServiceBApplicationTests.java new file mode 100644 index 0000000..f3d6c28 --- /dev/null +++ b/ServiceB/src/test/java/com/example/serviceB/ServiceBApplicationTests.java @@ -0,0 +1,13 @@ +package com.example.serviceB; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; + +@SpringBootTest +class ServiceBApplicationTests { + + @Test + void contextLoads() { + } + +}