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Javet is Java + V8 (JAVa + V + EighT). It is an awesome way of embedding Node.js and V8 in Java.
/*
* Copyright (c) 2021-2023. caoccao.com Sam Cao
*
* 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.caoccao.javet.interception.logging;
import com.caoccao.javet.exceptions.JavetError;
import com.caoccao.javet.exceptions.JavetException;
import com.caoccao.javet.interception.BaseJavetInterceptor;
import com.caoccao.javet.interop.V8Runtime;
import com.caoccao.javet.interop.callback.JavetCallbackContext;
import com.caoccao.javet.utils.SimpleMap;
import com.caoccao.javet.utils.V8ValueUtils;
import com.caoccao.javet.values.V8Value;
import com.caoccao.javet.values.reference.IV8ValueObject;
import com.caoccao.javet.values.reference.V8ValueObject;
/**
* The type Base javet console interceptor.
*
* @since 0.7.0
*/
public abstract class BaseJavetConsoleInterceptor extends BaseJavetInterceptor {
/**
* The constant JAVA_CONSOLE_DEBUG.
*
* @since 0.7.0
*/
protected static final String JAVA_CONSOLE_DEBUG = "consoleDebug";
/**
* The constant JAVA_CONSOLE_ERROR.
*
* @since 0.7.0
*/
protected static final String JAVA_CONSOLE_ERROR = "consoleError";
/**
* The constant JAVA_CONSOLE_INFO.
*
* @since 0.7.0
*/
protected static final String JAVA_CONSOLE_INFO = "consoleInfo";
/**
* The constant JAVA_CONSOLE_LOG.
*
* @since 0.7.0
*/
protected static final String JAVA_CONSOLE_LOG = "consoleLog";
/**
* The constant JAVA_CONSOLE_TRACE.
*
* @since 0.7.0
*/
protected static final String JAVA_CONSOLE_TRACE = "consoleTrace";
/**
* The constant JAVA_CONSOLE_WARN.
*
* @since 0.7.0
*/
protected static final String JAVA_CONSOLE_WARN = "consoleWarn";
/**
* The constant JS_FUNCTION_DEBUG.
*
* @since 0.7.0
*/
protected static final String JS_FUNCTION_DEBUG = "debug";
/**
* The constant JS_FUNCTION_ERROR.
*
* @since 0.7.0
*/
protected static final String JS_FUNCTION_ERROR = "error";
/**
* The constant JS_FUNCTION_INFO.
*
* @since 0.7.0
*/
protected static final String JS_FUNCTION_INFO = "info";
/**
* The constant JS_FUNCTION_LOG.
*
* @since 0.7.0
*/
protected static final String JS_FUNCTION_LOG = "log";
/**
* The constant JS_FUNCTION_TRACE.
*
* @since 0.7.0
*/
protected static final String JS_FUNCTION_TRACE = "trace";
/**
* The constant JS_FUNCTION_WARN.
*
* @since 0.7.0
*/
protected static final String JS_FUNCTION_WARN = "warn";
/**
* The constant PROPERTY_CONSOLE.
*
* @since 0.7.0
*/
protected static final String PROPERTY_CONSOLE = "console";
/**
* The constant SPACE.
*
* @since 0.7.1
*/
protected static final String SPACE = " ";
/**
* Instantiates a new Base javet console interceptor.
*
* @param v8Runtime the V8 runtime
* @since 0.7.0
*/
public BaseJavetConsoleInterceptor(V8Runtime v8Runtime) {
super(v8Runtime);
}
/**
* Concat string.
*
* @param v8Values the V8 values
* @return the string
* @since 0.7.0
*/
public String concat(V8Value... v8Values) {
return V8ValueUtils.concat(SPACE, v8Values);
}
/**
* Console debug.
*
* @param v8Values the V8 values
* @since 0.7.0
*/
public abstract void consoleDebug(V8Value... v8Values);
/**
* Console error.
*
* @param v8Values the V8 values
* @since 0.7.0
*/
public abstract void consoleError(V8Value... v8Values);
/**
* Console info.
*
* @param v8Values the V8 values
* @since 0.7.0
*/
public abstract void consoleInfo(V8Value... v8Values);
/**
* Console log.
*
* @param v8Values the V8 values
* @since 0.7.0
*/
public abstract void consoleLog(V8Value... v8Values);
/**
* Console trace.
*
* @param v8Values the V8 values
* @since 0.7.0
*/
public abstract void consoleTrace(V8Value... v8Values);
/**
* Console warn.
*
* @param v8Values the V8 values
* @since 0.7.0
*/
public abstract void consoleWarn(V8Value... v8Values);
@Override
public boolean register(IV8ValueObject... iV8ValueObjects) throws JavetException {
try (V8ValueObject console = v8Runtime.createV8ValueObject()) {
for (IV8ValueObject iV8ValueObject : iV8ValueObjects) {
iV8ValueObject.set(PROPERTY_CONSOLE, console);
register(console, JS_FUNCTION_DEBUG, JAVA_CONSOLE_DEBUG);
register(console, JS_FUNCTION_ERROR, JAVA_CONSOLE_ERROR);
register(console, JS_FUNCTION_INFO, JAVA_CONSOLE_INFO);
register(console, JS_FUNCTION_LOG, JAVA_CONSOLE_LOG);
register(console, JS_FUNCTION_TRACE, JAVA_CONSOLE_TRACE);
register(console, JS_FUNCTION_WARN, JAVA_CONSOLE_WARN);
}
return true;
}
}
/**
* Register a JS function by name.
*
* @param iV8ValueObject the V8 value object
* @param jsFunctionName the JS function name
* @param javaFunctionName the Java function name
* @throws JavetException the Javet exception
* @since 0.7.0
*/
protected void register(IV8ValueObject iV8ValueObject, String jsFunctionName, String javaFunctionName)
throws JavetException {
try {
iV8ValueObject.bindFunction(
jsFunctionName,
new JavetCallbackContext(this,
getClass().getMethod(javaFunctionName, V8Value[].class)));
} catch (NoSuchMethodException e) {
throw new JavetException(
JavetError.CallbackRegistrationFailure,
SimpleMap.of(
JavetError.PARAMETER_METHOD_NAME, javaFunctionName,
JavetError.PARAMETER_MESSAGE, e.getMessage()),
e);
}
}
@Override
public boolean unregister(IV8ValueObject... iV8ValueObjects) throws JavetException {
boolean successful = true;
for (IV8ValueObject iV8ValueObject : iV8ValueObjects) {
try (V8ValueObject console = iV8ValueObject.get(PROPERTY_CONSOLE)) {
console.delete(JS_FUNCTION_DEBUG);
console.delete(JS_FUNCTION_ERROR);
console.delete(JS_FUNCTION_INFO);
console.delete(JS_FUNCTION_LOG);
console.delete(JS_FUNCTION_TRACE);
console.delete(JS_FUNCTION_WARN);
}
successful &= iV8ValueObject.delete(PROPERTY_CONSOLE);
}
return successful;
}
}