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Add GraalJS regular expression and factory implementation (#1058)
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48 changes: 48 additions & 0 deletions
48
src/main/java/com/networknt/schema/regex/ECMAScriptRegularExpressionFactory.java
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| @@ -0,0 +1,48 @@ | ||
| /* | ||
| * Copyright (c) 2024 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 | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.networknt.schema.regex; | ||
|
|
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| import com.networknt.schema.utils.Classes; | ||
|
|
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| /** | ||
| * ECMAScript regular expression factory that chooses between GraalJS or Joni | ||
| * implementations depending on which is on the classpath. | ||
| */ | ||
| public class ECMAScriptRegularExpressionFactory implements RegularExpressionFactory { | ||
| private static final boolean JONI_PRESENT = Classes.isPresent("org.joni.Regex", | ||
| ECMAScriptRegularExpressionFactory.class.getClassLoader()); | ||
| private static final boolean GRAALJS_PRESENT = Classes.isPresent("com.oracle.truffle.js.parser.GraalJSEvaluator", | ||
| ECMAScriptRegularExpressionFactory.class.getClassLoader()); | ||
|
|
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| private static final RegularExpressionFactory DELEGATE = GRAALJS_PRESENT | ||
| ? GraalJSRegularExpressionFactory.getInstance() | ||
| : JoniRegularExpressionFactory.getInstance(); | ||
|
|
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| public static final ECMAScriptRegularExpressionFactory INSTANCE = new ECMAScriptRegularExpressionFactory(); | ||
|
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| public static ECMAScriptRegularExpressionFactory getInstance() { | ||
| if (!JONI_PRESENT && !GRAALJS_PRESENT) { | ||
| throw new IllegalArgumentException( | ||
| "Either org.jruby.joni:joni or org.graalvm.js:js needs to be present in the classpath"); | ||
| } | ||
| return INSTANCE; | ||
| } | ||
|
|
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| @Override | ||
| public RegularExpression getRegularExpression(String regex) { | ||
| return DELEGATE.getRegularExpression(regex); | ||
| } | ||
| } |
42 changes: 42 additions & 0 deletions
42
src/main/java/com/networknt/schema/regex/GraalJSContextFactory.java
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| /* | ||
| * Copyright (c) 2024 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 | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.networknt.schema.regex; | ||
|
|
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| import org.graalvm.polyglot.Context; | ||
|
|
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| /** | ||
| * Factory for the js {@link Context}. | ||
| */ | ||
| public class GraalJSContextFactory { | ||
| /** | ||
| * The holder defers the classloading until it is used. | ||
| */ | ||
| private static class Holder { | ||
| private static final Context INSTANCE = Context.newBuilder("js").option("engine.WarnInterpreterOnly", "false") | ||
| .build(); | ||
| } | ||
|
|
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| /** | ||
| * Gets the singleton instance of the Context. | ||
| * <p> | ||
| * This may need to be closed to release resources if no longer needed. | ||
| * | ||
| * @return the Context | ||
| */ | ||
| public static Context getInstance() { | ||
| return Holder.INSTANCE; | ||
| } | ||
| } |
43 changes: 43 additions & 0 deletions
43
src/main/java/com/networknt/schema/regex/GraalJSRegularExpression.java
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| /* | ||
| * Copyright (c) 2024 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 | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.networknt.schema.regex; | ||
|
|
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| import org.graalvm.polyglot.Value; | ||
|
|
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| /** | ||
| * GraalJS {@link RegularExpression}. | ||
| * <p> | ||
| * This requires a dependency on org.graalvm.js:js which along with its | ||
| * dependency libraries are 50 mb. | ||
| */ | ||
| class GraalJSRegularExpression implements RegularExpression { | ||
| private final GraalJSRegularExpressionContext context; | ||
| private final Value function; | ||
|
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| GraalJSRegularExpression(String regex, GraalJSRegularExpressionContext context) { | ||
| this.context = context; | ||
| synchronized(context.getContext()) { | ||
| this.function = context.getRegExpBuilder().execute(regex); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public boolean matches(String value) { | ||
| synchronized(context.getContext()) { | ||
| return !function.execute(value).isNull(); | ||
| } | ||
| } | ||
| } |
66 changes: 66 additions & 0 deletions
66
src/main/java/com/networknt/schema/regex/GraalJSRegularExpressionContext.java
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| @@ -0,0 +1,66 @@ | ||
| /* | ||
| * Copyright (c) 2024 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 | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package com.networknt.schema.regex; | ||
|
|
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| import org.graalvm.polyglot.Context; | ||
| import org.graalvm.polyglot.Value; | ||
|
|
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| /** | ||
| * GraalJSRegularExpressionContext. | ||
| */ | ||
| public class GraalJSRegularExpressionContext { | ||
| private static final String SOURCE = "pattern => {\n" | ||
| + " const regex = new RegExp(pattern, 'u');\n" | ||
| + " return text => text.match(regex)\n" | ||
| + "};"; | ||
|
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| private final Context context; | ||
| private final Value regExpBuilder; | ||
|
|
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| /** | ||
| * Constructor. | ||
| * <p> | ||
| * It is the caller's responsibility to release the context when it is no longer | ||
| * required. | ||
| * | ||
| * @param context the context | ||
| */ | ||
| public GraalJSRegularExpressionContext(Context context) { | ||
| this.context = context; | ||
| synchronized(this.context) { | ||
| this.regExpBuilder = this.context.eval("js", SOURCE); | ||
| } | ||
| } | ||
|
|
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| /** | ||
| * Operations must synchronize on the {@link Context} as only a single thread | ||
| * can access the {@link Context} and {@link #getRegExpBuilder()} at one time. | ||
| * | ||
| * @return the context | ||
| */ | ||
| public Context getContext() { | ||
| return context; | ||
| } | ||
|
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| /** | ||
| * Gets the RegExp builder. | ||
| * | ||
| * @return the regexp builder | ||
| */ | ||
| public Value getRegExpBuilder() { | ||
| return regExpBuilder; | ||
| } | ||
| } |
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