Examples with DefaultLESSCompiler org.xwiki.lesscss.internal.compiler.DefaultLESSCompiler used on opensource projects

Example 1 with DefaultLESSCompiler

use of org.xwiki.lesscss.internal.compiler.DefaultLESSCompiler in project xwiki-platform by xwiki.

the class AbstractCachedCompiler method getResult.

/**
 * Get the result of the compilation.
 * @param lessResourceReference reference to the LESS content
 * @param includeSkinStyle include the main LESS file of the skin in order to have variables and mix-ins
 * defined there
 * @param useVelocity either or not the resource be parsed by Velocity before compiling it
 * @param force force the computation, even if the output is already in the cache (not recommended)
 * @param skin name of the skin used for the context
 * @return the desired object
 * @throws LESSCompilerException if problems occur
 */
public T getResult(LESSResourceReference lessResourceReference, boolean includeSkinStyle, boolean useVelocity, String skin, boolean force) throws LESSCompilerException {
    // If the cache is disabled, we just compile
    if (lessContext.isCacheDisabled()) {
        return compiler.compute(lessResourceReference, includeSkinStyle, useVelocity, true, skin);
    }
    T result = null;
    SkinReference skinReference = skinReferenceFactory.createReference(skin);
    ColorThemeReference colorThemeReference = colorThemeReferenceFactory.createReference(currentColorThemeGetter.getCurrentColorTheme(true, "default"));
    // Only one computation is allowed in the same time per color theme, then the waiting threads will be able to
    // use the last result stored in the cache.
    Object mutex = cache.getMutex(lessResourceReference, skinReference, colorThemeReference);
    synchronized (mutex) {
        // Check if the result is in the cache
        if (!force) {
            result = cache.get(lessResourceReference, skinReference, colorThemeReference);
            if (result != null) {
                // we only do the Velocity Execution step.
                if (lessContext.isHtmlExport() && useVelocity && this instanceof DefaultLESSCompiler) {
                    compiler.compute(lessResourceReference, includeSkinStyle, true, false, skin);
                }
                return cloneResult(result);
            }
        }
        // Either the result was in the cache or the force flag is set to true, we need to compile
        try {
            result = compiler.compute(lessResourceReference, includeSkinStyle, useVelocity, true, skin);
        } catch (LESSCompilerException e) {
            logger.error("Error during the compilation of the resource [{}].", lessResourceReference, e);
            // We must cache the result, even if the compilation have failed, to prevent re-compiling again and
            // again (the compilation will still fail until the LESS resource is updated so it useless to retry).
            result = exceptionAsResult(e);
        } finally {
            // Put the result in the cache
            cache.set(lessResourceReference, skinReference, colorThemeReference, result);
        }
    }
    return cloneResult(result);
}