Implement First Draft of Supplier API

This commit is contained in:
CodeSteak 2020-05-12 22:41:08 +02:00
parent 89eaeaed40
commit 62d811db1d
16 changed files with 613 additions and 0 deletions

32
supplier/.gitignore vendored Normal file
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HELP.md
.gradle
build/
!gradle/wrapper/gradle-wrapper.jar
!**/src/main/**
!**/src/test/**
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
out/
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
### VS Code ###
.vscode/

29
supplier/build.gradle Normal file
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plugins {
id 'org.springframework.boot' version '2.2.7.RELEASE'
id 'io.spring.dependency-management' version '1.0.9.RELEASE'
id 'java'
}
group = 'org.hso.ecommerce'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
repositories {
mavenCentral()
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
testImplementation('org.springframework.boot:spring-boot-starter-test') {
exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
}
}
test {
useJUnitPlatform()
}

26
supplier/config/bank.json Normal file
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{
"id" : "bank",
"name" : "Bank of Cheese",
"discount" : {
"minimumDailySalesVolumeNetCent": 100,
"percentDiscount": 1
},
"articles": [
{
"title": "Big Mac",
"manufacturer": "Mc Donalds",
"articleNumber": "0x1 BIGMAC",
"vatPercent": 7,
"pricePerUnitNet": 700,
"shouldBeAdvertised": true
},
{
"title": "500£ Schein",
"manufacturer": "Bank",
"articleNumber": "500",
"vatPercent": 0,
"pricePerUnitNet": 50000,
"shouldBeAdvertised": false
}
]
}

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{
"id" : "hans",
"name" : "Hans and more",
"discount" : {
"minimumDailySalesVolumeNetCent": 100000,
"percentDiscount": 2
},
"articles": [
{
"title": "Big Mac",
"manufacturer": "Mc Donalds",
"articleNumber": "0x1 BIGMAC",
"vatPercent": 7,
"pricePerUnitNet": 700,
"shouldBeAdvertised": true
},
{
"title": "Pommes",
"manufacturer": "Mc Donalds",
"articleNumber": "0x1 POmes",
"vatPercent": 7,
"pricePerUnitNet": 100,
"shouldBeAdvertised": false
},
{
"title": "Milchshake Premium 19%",
"manufacturer": "Mc Donalds",
"articleNumber": "0x2",
"vatPercent": 19,
"pricePerUnitNet": 50,
"shouldBeAdvertised": true
}
]
}

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supplier/gradlew vendored Executable file
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#!/usr/bin/env sh
#
# Copyright 2015 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$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" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"

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supplier/gradlew.bat vendored Normal file
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@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%" == "0" goto init
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 init
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
:init
@rem Get command-line arguments, handling Windows variants
if not "%OS%" == "Windows_NT" goto win9xME_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
: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 %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="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!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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supplier/settings.gradle Normal file
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rootProject.name = 'supplier'

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package org.hso.ecommerce.supplier;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}

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package org.hso.ecommerce.supplier;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.hso.ecommerce.supplier.data.Supplier;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
public class ConfigurationReader {
public static List<Supplier> read() throws IOException {
File dir = new File("./config/");
System.out.println("Loading Config in " + dir.getAbsolutePath());
ArrayList<Supplier> ret = Files.list(dir.toPath()).map(path -> {
System.out.println("Iterating over; " + path);
if (path.toString().endsWith(".json")) {
try {
String jsonData = Files.readString(path, StandardCharsets.UTF_8);
ObjectMapper objectMapper = new ObjectMapper();
Supplier sup = (Supplier)objectMapper.readValue(jsonData, Supplier.class);
System.out.println("Loaded " + sup.id);
return sup;
} catch (IOException e) {
e.printStackTrace();
}
} else {
System.out.println("Skipping because of file extension.");
}
return null;
}).collect(Collectors.toCollection(ArrayList::new));
ret.removeIf(Objects::isNull);
return ret;
}
}

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package org.hso.ecommerce.supplier;
import org.hso.ecommerce.supplier.data.Article;
import org.hso.ecommerce.supplier.data.Order;
import org.hso.ecommerce.supplier.data.OrderConfirmation;
import org.hso.ecommerce.supplier.data.Supplier;
import org.springframework.web.bind.annotation.*;
import javax.annotation.PostConstruct;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
@RestController
public class RequestController {
private final HashMap<String, Integer> dailySalesVolumeCent = new HashMap<>();
private final HashMap<String, Supplier> knownSuppliers = new HashMap<>();
private final SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
@PostConstruct
public void init() throws IOException {
for (Supplier s : ConfigurationReader.read()) {
knownSuppliers.put(s.id, s);
}
}
@GetMapping("/")
public List<Supplier> index() {
return new ArrayList<>(knownSuppliers.values());
}
@GetMapping("/{supplier}/")
public Supplier supplier(HttpServletResponse res, @PathVariable("supplier") String supplierName) {
Supplier s = knownSuppliers.get(supplierName);
if(s == null) {
res.setStatus(HttpServletResponse.SC_NOT_FOUND);
}
return s;
}
@PostMapping("/{supplier}/order")
public OrderConfirmation order(HttpServletResponse res, @PathVariable("supplier") String supplierName, @RequestBody Order order) {
Supplier s = knownSuppliers.get(supplierName);
if(s == null) {
res.setStatus(HttpServletResponse.SC_NOT_FOUND);
return null;
}
String dateKey = simpleDateFormat.format(new Date());
int dailyVolume = dailySalesVolumeCent.getOrDefault(dateKey,0);
Article a = s.findArticle(order.manufacturer, order.articleNumber);
if(a == null) {
res.setStatus(HttpServletResponse.SC_BAD_REQUEST);
return null;
}
int priceNet = a.pricePerUnitNet * order.quantity;
int discount = 0;
if(dailyVolume >= s.discount.minimumDailySalesVolumeNetCent) {
discount = (priceNet * s.discount.percentDiscount) / 100;
}
OrderConfirmation confirmation = new OrderConfirmation();
confirmation.articleNumber = order.articleNumber;
confirmation.discountNetCent = discount;
confirmation.pricePerUnitNetCent = a.pricePerUnitNet;
confirmation.manufacturer = a.manufacturer;
confirmation.quantity = order.quantity;
confirmation.totalPriceNetCharged = priceNet - discount;
if (confirmation.totalPriceNetCharged > order.maxTotalPriceCentNet) {
res.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
return null;
}
dailyVolume += confirmation.totalPriceNetCharged;
dailySalesVolumeCent.put(dateKey, dailyVolume);
return confirmation;
}
}

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package org.hso.ecommerce.supplier.data;
public class Article {
public String title;
public String manufacturer;
public String articleNumber;
public int vatPercent;
public int pricePerUnitNet;
public boolean shouldBeAdvertised;
}

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package org.hso.ecommerce.supplier.data;
public class Order {
public String manufacturer;
public String articleNumber;
public int quantity;
public int maxTotalPriceCentNet;
}

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package org.hso.ecommerce.supplier.data;
public class OrderConfirmation {
public String manufacturer;
public String articleNumber;
public int quantity;
public int pricePerUnitNetCent;
public int discountNetCent;
public int totalPriceNetCharged;
}

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package org.hso.ecommerce.supplier.data;
import java.util.List;
public class Supplier {
public String id;
public String name;
public SupplierDiscount discount;
public List<Article> articles;
public Article findArticle(String manufacturer, String articleNumber) {
for(Article a : articles) {
if(a.manufacturer.equals(manufacturer) && a.articleNumber.equals(articleNumber)) {
return a;
}
}
return null;
}
}

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package org.hso.ecommerce.supplier.data;
public class SupplierDiscount {
public int minimumDailySalesVolumeNetCent;
public int percentDiscount;
}

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server.address=::1
server.port=8081