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feature #I64PDW 增加Python脚本支持

This commit is contained in:
everywhere.z 2022-12-05 17:45:19 +08:00
parent 52eda8fe47
commit cd3118cf19
18 changed files with 413 additions and 179 deletions
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111
liteflow-core/src/main/java/com/yomahub/liteflow/script/jsr223/JSR223ScriptExecutor.java Normal file
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@ -0,0 +1,111 @@
package com.yomahub.liteflow.script.jsr223;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.yomahub.liteflow.exception.LiteFlowException;
import com.yomahub.liteflow.script.ScriptBeanManager;
import com.yomahub.liteflow.script.ScriptExecuteWrap;
import com.yomahub.liteflow.script.ScriptExecutor;
import com.yomahub.liteflow.script.exception.ScriptLoadException;
import com.yomahub.liteflow.slot.DataBus;
import com.yomahub.liteflow.slot.Slot;
import com.yomahub.liteflow.util.CopyOnWriteHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.script.*;
import java.util.Map;
/**
* JSR223 script engine的统一实现抽象类
* @author Bryan.Zhang
* @since 2.9.5
*/
public abstract class JSR223ScriptExecutor implements ScriptExecutor {
protected final Logger log = LoggerFactory.getLogger(this.getClass());
private ScriptEngine scriptEngine;
private final Map<String, CompiledScript> compiledScriptMap = new CopyOnWriteHashMap<>();
@Override
public ScriptExecutor init() {
ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
scriptEngine = scriptEngineManager.getEngineByName(scriptEngineName());
return this;
}
protected abstract String scriptEngineName();
protected String convertScript(String script){
return script;
}
@Override
public void load(String nodeId, String script) {
try{
CompiledScript compiledScript = ((Compilable) scriptEngine).compile(convertScript(script));
compiledScriptMap.put(nodeId, compiledScript);
}catch (Exception e){
String errorMsg = StrUtil.format("script loading error for node[{}], error msg:{}", nodeId, e.getMessage());
throw new ScriptLoadException(errorMsg);
}
}
@Override
public Object execute(ScriptExecuteWrap wrap) throws Exception{
try{
if (!compiledScriptMap.containsKey(wrap.getNodeId())){
String errorMsg = StrUtil.format("script for node[{}] is not loaded", wrap.getNodeId());
throw new ScriptLoadException(errorMsg);
}
CompiledScript compiledScript = compiledScriptMap.get(wrap.getNodeId());
Bindings bindings = new SimpleBindings();
//往脚本语言绑定表里循环增加绑定上下文的key
//key的规则为自定义上下文的simpleName
//比如你的自定义上下文为AbcContext，那么key就为:abcContext
//这里不统一放一个map的原因是考虑到有些用户会调用上下文里的方法，而不是参数，所以脚本语言的绑定表里也是放多个上下文
DataBus.getContextBeanList(wrap.getSlotIndex()).forEach(o -> {
String key = StrUtil.lowerFirst(o.getClass().getSimpleName());
bindings.put(key, o);
});
//把wrap对象转换成元数据map
Map<String, Object> metaMap = BeanUtil.beanToMap(wrap);
//在元数据里放入主Chain的流程参数
Slot slot = DataBus.getSlot(wrap.getSlotIndex());
metaMap.put("requestData", slot.getRequestData());
//如果有隐式流程，则放入隐式流程的流程参数
Object subRequestData = slot.getChainReqData(wrap.getCurrChainId());
if (ObjectUtil.isNotNull(subRequestData)){
metaMap.put("subRequestData", subRequestData);
}
//往脚本上下文里放入元数据
bindings.put("_meta", metaMap);
//放入用户自己定义的bean
ScriptBeanManager.getScriptBeanMap().forEach(bindings::putIfAbsent);
return compiledScript.eval(bindings);
}catch (Exception e){
if (ObjectUtil.isNotNull(e.getCause()) && e.getCause() instanceof LiteFlowException){
throw (LiteFlowException)e.getCause();
}else{
throw e;
}
}
}
@Override
public void cleanCache() {
compiledScriptMap.clear();
}
}

96
liteflow-script-plugin/liteflow-script-groovy/src/main/java/com/yomahub/liteflow/script/groovy/GroovyScriptExecutor.java
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@ -1,104 +1,16 @@
package com.yomahub.liteflow.script.groovy;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.yomahub.liteflow.exception.LiteFlowException;
import com.yomahub.liteflow.script.ScriptBeanManager;
import com.yomahub.liteflow.script.ScriptExecuteWrap;
import com.yomahub.liteflow.slot.DataBus;
import com.yomahub.liteflow.slot.Slot;
import com.yomahub.liteflow.script.ScriptExecutor;
import com.yomahub.liteflow.script.exception.ScriptLoadException;
import com.yomahub.liteflow.util.CopyOnWriteHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.script.*;
import java.util.Map;
import com.yomahub.liteflow.script.jsr223.JSR223ScriptExecutor;
/**
* Groovy脚本语言的执行器实现
* @author Bryan.Zhang
* @since 2.6.0
*/
public class GroovyScriptExecutor implements ScriptExecutor {
private final Logger log = LoggerFactory.getLogger(this.getClass());
private ScriptEngine scriptEngine;
private final Map<String, CompiledScript> compiledScriptMap = new CopyOnWriteHashMap<>();
public class GroovyScriptExecutor extends JSR223ScriptExecutor {
@Override
public ScriptExecutor init() {
ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
scriptEngine = scriptEngineManager.getEngineByName("groovy");
return this;
}
@Override
public void load(String nodeId, String script) {
try{
CompiledScript compiledScript = ((Compilable) scriptEngine).compile(script);
compiledScriptMap.put(nodeId, compiledScript);
}catch (Exception e){
String errorMsg = StrUtil.format("script loading error for node[{}], error msg:{}", nodeId, e.getMessage());
throw new ScriptLoadException(errorMsg);
}
}
@Override
public Object execute(ScriptExecuteWrap wrap) throws Exception{
try{
if (!compiledScriptMap.containsKey(wrap.getNodeId())){
String errorMsg = StrUtil.format("script for node[{}] is not loaded", wrap.getNodeId());
throw new ScriptLoadException(errorMsg);
}
CompiledScript compiledScript = compiledScriptMap.get(wrap.getNodeId());
Bindings bindings = new SimpleBindings();
//往脚本语言绑定表里循环增加绑定上下文的key
//key的规则为自定义上下文的simpleName
//比如你的自定义上下文为AbcContext，那么key就为:abcContext
//这里不统一放一个map的原因是考虑到有些用户会调用上下文里的方法，而不是参数，所以脚本语言的绑定表里也是放多个上下文
DataBus.getContextBeanList(wrap.getSlotIndex()).forEach(o -> {
String key = StrUtil.lowerFirst(o.getClass().getSimpleName());
bindings.put(key, o);
});
//把wrap对象转换成元数据map
Map<String, Object> metaMap = BeanUtil.beanToMap(wrap);
//在元数据里放入主Chain的流程参数
Slot slot = DataBus.getSlot(wrap.getSlotIndex());
metaMap.put("requestData", slot.getRequestData());
//如果有隐式流程，则放入隐式流程的流程参数
Object subRequestData = slot.getChainReqData(wrap.getCurrChainId());
if (ObjectUtil.isNotNull(subRequestData)){
metaMap.put("subRequestData", subRequestData);
}
//往脚本上下文里放入元数据
bindings.put("_meta", metaMap);
//放入用户自己定义的bean
ScriptBeanManager.getScriptBeanMap().forEach(bindings::putIfAbsent);
return compiledScript.eval(bindings);
}catch (Exception e){
if (ObjectUtil.isNotNull(e.getCause()) && e.getCause() instanceof LiteFlowException){
throw (LiteFlowException)e.getCause();
}else{
throw e;
}
}
}
@Override
public void cleanCache() {
compiledScriptMap.clear();
protected String scriptEngineName() {
return "groovy";
}
}

92
liteflow-script-plugin/liteflow-script-javascript/src/main/java/com/yomahub/liteflow/script/javascript/JavaScriptExecutor.java
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@ -1,101 +1,21 @@
package com.yomahub.liteflow.script.javascript;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import com.yomahub.liteflow.script.ScriptBeanManager;
import com.yomahub.liteflow.script.ScriptExecuteWrap;
import com.yomahub.liteflow.slot.DataBus;
import com.yomahub.liteflow.slot.Slot;
import com.yomahub.liteflow.script.ScriptExecutor;
import com.yomahub.liteflow.script.exception.ScriptLoadException;
import com.yomahub.liteflow.util.CopyOnWriteHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.script.*;
import java.util.Map;
import com.yomahub.liteflow.script.jsr223.JSR223ScriptExecutor;
/**
* JavaScript脚本语言的执行器实现
* @author Bryan.Zhang
* @since 2.9.1
*/
public class JavaScriptExecutor implements ScriptExecutor {
private final Logger log = LoggerFactory.getLogger(this.getClass());
private ScriptEngine scriptEngine;
private final Map<String, CompiledScript> compiledScriptMap = new CopyOnWriteHashMap<>();
public class JavaScriptExecutor extends JSR223ScriptExecutor {
@Override
public ScriptExecutor init() {
ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
scriptEngine = scriptEngineManager.getEngineByName("javascript");
return this;
protected String scriptEngineName() {
return "javascript";
}
@Override
public void load(String nodeId, String script) {
try{
String wrapScript = StrUtil.format("function process(){{}} process();",script);
CompiledScript compiledScript = ((Compilable) scriptEngine).compile(wrapScript);
compiledScriptMap.put(nodeId, compiledScript);
}catch (Exception e){
String errorMsg = StrUtil.format("script loading error for node[{}], error msg:{}", nodeId, e.getMessage());
throw new ScriptLoadException(errorMsg);
}
}
@Override
public Object execute(ScriptExecuteWrap wrap) throws Exception{
try{
if (!compiledScriptMap.containsKey(wrap.getNodeId())){
String errorMsg = StrUtil.format("script for node[{}] is not loaded", wrap.getNodeId());
throw new ScriptLoadException(errorMsg);
}
CompiledScript compiledScript = compiledScriptMap.get(wrap.getNodeId());
Bindings bindings = new SimpleBindings();
//往脚本语言绑定表里循环增加绑定上下文的key
//key的规则为自定义上下文的simpleName
//比如你的自定义上下文为AbcContext，那么key就为:abcContext
//这里不统一放一个map的原因是考虑到有些用户会调用上下文里的方法，而不是参数，所以脚本语言的绑定表里也是放多个上下文
DataBus.getContextBeanList(wrap.getSlotIndex()).forEach(o -> {
String key = StrUtil.lowerFirst(o.getClass().getSimpleName());
bindings.put(key, o);
});
//把wrap对象转换成元数据map
Map<String, Object> metaMap = BeanUtil.beanToMap(wrap);
//在元数据里放入主Chain的流程参数
Slot slot = DataBus.getSlot(wrap.getSlotIndex());
metaMap.put("requestData", slot.getRequestData());
//如果有隐式流程，则放入隐式流程的流程参数
Object subRequestData = slot.getChainReqData(wrap.getCurrChainName());
if (ObjectUtil.isNotNull(subRequestData)){
metaMap.put("subRequestData", subRequestData);
}
//往脚本上下文里放入元数据
bindings.put("_meta", metaMap);
//放入用户自己定义的bean
ScriptBeanManager.getScriptBeanMap().forEach(bindings::putIfAbsent);
return compiledScript.eval(bindings);
}catch (Exception e){
throw e;
}
}
@Override
public void cleanCache() {
compiledScriptMap.clear();
protected String convertScript(String script) {
return StrUtil.format("function process(){{}} process();",script);
}
}

27
liteflow-script-plugin/liteflow-script-python/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.yomahub</groupId>
<artifactId>liteflow-script-plugin</artifactId>
<version>2.9.5</version>
</parent>
<artifactId>liteflow-script-python</artifactId>
<dependencies>
<dependency>
<groupId>com.yomahub</groupId>
<artifactId>liteflow-core</artifactId>
<version>${revision}</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.python</groupId>
<artifactId>jython-standalone</artifactId>
</dependency>
</dependencies>
</project>

50
liteflow-script-plugin/liteflow-script-python/src/main/java/com/yomahub/liteflow/script/python/PythonScriptExecutor.java Normal file
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@ -0,0 +1,50 @@
package com.yomahub.liteflow.script.python;
import cn.hutool.core.util.CharUtil;
import cn.hutool.core.util.CreditCodeUtil;
import cn.hutool.core.util.ReUtil;
import cn.hutool.core.util.StrUtil;
import com.yomahub.liteflow.script.jsr223.JSR223ScriptExecutor;
import org.python.antlr.PythonParser;
import org.python.util.CodegenUtils;
import org.python.util.JycompileAntTask;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
/**
* Python脚本语言的执行器实现
* @author Bryan.Zhang
* @since 2.9.5
*/
public class PythonScriptExecutor extends JSR223ScriptExecutor {
@Override
protected String scriptEngineName() {
return "python";
}
@Override
protected String convertScript(String script) {
String[] lineArray = script.split("\\n");
List<String> noBlankLineList = Arrays.stream(lineArray).filter(
s -> !StrUtil.isBlank(s)
).collect(Collectors.toList());
//用第一行的缩进的空格数作为整个代码的缩进量
String blankStr = ReUtil.getGroup0("^[ ]*", noBlankLineList.get(0));
//重新构建python脚本
StringBuilder scriptSB = new StringBuilder();
noBlankLineList.forEach(s
-> scriptSB.append(StrUtil.format("{}\n", s.replaceFirst(blankStr, StrUtil.EMPTY))));
return scriptSB.toString();
}
}

2
liteflow-script-plugin/liteflow-script-python/src/main/resources/META-INF/services/com.yomahub.liteflow.script.ScriptExecutor Normal file
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@ -0,0 +1,2 @@
# Python的实现
com.yomahub.liteflow.script.python.PythonScriptExecutor

1
liteflow-script-plugin/pom.xml
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@ -19,6 +19,7 @@
<module>liteflow-script-groovy</module>
<module>liteflow-script-javascript</module>
<module>liteflow-script-graaljs</module>
<module>liteflow-script-python</module>
</modules>
</project>

33
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/pom.xml Normal file
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@ -0,0 +1,33 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>liteflow-testcase-el</artifactId>
<groupId>com.yomahub</groupId>
<version>${revision}</version>
<relativePath>../pom.xml</relativePath>
</parent>
<artifactId>liteflow-testcase-el-script-python-springboot</artifactId>
<dependencies>
<dependency>
<groupId>com.yomahub</groupId>
<artifactId>liteflow-spring-boot-starter</artifactId>
<version>${revision}</version>
</dependency>
<dependency>
<groupId>com.yomahub</groupId>
<artifactId>liteflow-script-python</artifactId>
<version>${revision}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
</dependencies>
</project>

22
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/java/com/yomahub/liteflow/test/BaseTest.java Normal file
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@ -0,0 +1,22 @@
package com.yomahub.liteflow.test;
import com.yomahub.liteflow.core.FlowInitHook;
import com.yomahub.liteflow.flow.FlowBus;
import com.yomahub.liteflow.property.LiteflowConfigGetter;
import com.yomahub.liteflow.spi.holder.SpiFactoryCleaner;
import com.yomahub.liteflow.spring.ComponentScanner;
import com.yomahub.liteflow.thread.ExecutorHelper;
import org.junit.AfterClass;
public class BaseTest {
@AfterClass
public static void cleanScanCache(){
ComponentScanner.cleanCache();
FlowBus.cleanCache();
ExecutorHelper.loadInstance().clearExecutorServiceMap();
SpiFactoryCleaner.clean();
LiteflowConfigGetter.clean();
FlowInitHook.cleanHook();
}
}

42
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/java/com/yomahub/liteflow/test/script/python/common/ScriptPythonCommonELTest.java Normal file
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@ -0,0 +1,42 @@
package com.yomahub.liteflow.test.script.python.common;
import com.yomahub.liteflow.core.FlowExecutor;
import com.yomahub.liteflow.flow.LiteflowResponse;
import com.yomahub.liteflow.slot.DefaultContext;
import com.yomahub.liteflow.test.BaseTest;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.test.context.TestPropertySource;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
/**
* 测试springboot下的groovy脚本组件，基于xml配置
* @author Bryan.Zhang
* @since 2.6.0
*/
@RunWith(SpringRunner.class)
@TestPropertySource(value = "classpath:/common/application.properties")
@SpringBootTest(classes = ScriptPythonCommonELTest.class)
@EnableAutoConfiguration
@ComponentScan({"com.yomahub.liteflow.test.script.python.common.cmp"})
public class ScriptPythonCommonELTest extends BaseTest {
@Resource
private FlowExecutor flowExecutor;
//测试普通脚本节点
@Test
public void testCommon1() {
LiteflowResponse response = flowExecutor.execute2Resp("chain1", "arg");
DefaultContext context = response.getFirstContextBean();
Assert.assertTrue(response.isSuccess());
Assert.assertEquals(Integer.valueOf(30), context.getData("s1"));
}
}

20
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/java/com/yomahub/liteflow/test/script/python/common/cmp/ACmp.java Normal file
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@ -0,0 +1,20 @@
/**
* <p>Title: liteflow</p>
* <p>Description: 轻量级的组件式流程框架</p>
* @author Bryan.Zhang
* @email weenyc31@163.com
* @Date 2020/4/1
*/
package com.yomahub.liteflow.test.script.python.common.cmp;
import com.yomahub.liteflow.annotation.LiteflowComponent;
import com.yomahub.liteflow.core.NodeComponent;
@LiteflowComponent("a")
public class ACmp extends NodeComponent {
@Override
public void process() {
System.out.println("ACmp executed!");
}
}

21
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/java/com/yomahub/liteflow/test/script/python/common/cmp/BCmp.java Normal file
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@ -0,0 +1,21 @@
/**
* <p>Title: liteflow</p>
* <p>Description: 轻量级的组件式流程框架</p>
* @author Bryan.Zhang
* @email weenyc31@163.com
* @Date 2020/4/1
*/
package com.yomahub.liteflow.test.script.python.common.cmp;
import com.yomahub.liteflow.annotation.LiteflowComponent;
import com.yomahub.liteflow.core.NodeComponent;
@LiteflowComponent("b")
public class BCmp extends NodeComponent {
@Override
public void process() {
System.out.println("BCmp executed!");
}
}

21
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/java/com/yomahub/liteflow/test/script/python/common/cmp/CCmp.java Normal file
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@ -0,0 +1,21 @@
/**
* <p>Title: liteflow</p>
* <p>Description: 轻量级的组件式流程框架</p>
* @author Bryan.Zhang
* @email weenyc31@163.com
* @Date 2020/4/1
*/
package com.yomahub.liteflow.test.script.python.common.cmp;
import com.yomahub.liteflow.annotation.LiteflowComponent;
import com.yomahub.liteflow.core.NodeComponent;
@LiteflowComponent("c")
public class CCmp extends NodeComponent {
@Override
public void process() {
System.out.println("CCmp executed!");
}
}

24
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/java/com/yomahub/liteflow/test/script/python/common/cmp/DCmp.java Normal file
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@ -0,0 +1,24 @@
/**
* <p>Title: liteflow</p>
* <p>Description: 轻量级的组件式流程框架</p>
* @author Bryan.Zhang
* @email weenyc31@163.com
* @Date 2020/4/1
*/
package com.yomahub.liteflow.test.script.python.common.cmp;
import com.yomahub.liteflow.annotation.LiteflowComponent;
import com.yomahub.liteflow.core.NodeComponent;
import com.yomahub.liteflow.slot.DefaultContext;
@LiteflowComponent("d")
public class DCmp extends NodeComponent {
@Override
public void process() {
DefaultContext context = this.getFirstContextBean();
context.setData("count",198);
System.out.println("DCmp executed!");
}
}

1
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/resources/common/application.properties Normal file
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@ -0,0 +1 @@
liteflow.rule-source=common/flow.xml

21
liteflow-testcase-el/liteflow-testcase-el-script-python-springboot/src/test/resources/common/flow.xml Normal file
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@ -0,0 +1,21 @@
<?xml version="1.0" encoding="UTF-8"?>
<flow>
<nodes>
<node id="s1" name="普通脚本1" type="script">
<![CDATA[
a=6
b=10
if a>5:
b=5
print 'hello'
else:
print 'hi'
defaultContext.setData("s1",a*b)
]]>
</node>
</nodes>
<chain name="chain1">
THEN(a, b, c, s1);
</chain>
</flow>

1
liteflow-testcase-el/pom.xml
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@ -29,6 +29,7 @@
<module>liteflow-testcase-el-nacos-springboot</module>
<module>liteflow-testcase-el-etcd-springboot</module>
<module>liteflow-testcase-el-apollo-springboot</module>
<module>liteflow-testcase-el-script-python-springboot</module>
</modules>
<build>

7
pom.xml
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@ -69,6 +69,7 @@
<httpclient.version>4.5.13</httpclient.version>
<commons-beanutils.version>1.9.4</commons-beanutils.version>
<apollo.version>1.7.0</apollo.version>
<jython.version>2.7.3</jython.version>
</properties>
<dependencyManagement>
@ -265,7 +266,11 @@
<artifactId>apollo-client</artifactId>
<version>${apollo.version}</version>
</dependency>
<dependency>
<groupId>org.python</groupId>
<artifactId>jython-standalone</artifactId>
<version>${jython.version}</version>
</dependency>
</dependencies>
</dependencyManagement>