Package org.apache.hadoop.gateway.util.urltemplate

Examples of org.apache.hadoop.gateway.util.urltemplate.Template

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  }

  // Note: Source url was added to the request attributes by the GatewayFilter doFilter method.
  private Template getTargetUrl() {
    boolean rewriteRequestUrl = true;
    Template targetUrl;
    if( rewriteRequestUrl ) {
      targetUrl = (Template)getAttribute( AbstractGatewayFilter.TARGET_REQUEST_URL_ATTRIBUTE_NAME );
      if( targetUrl == null ) {
        Template sourceUrl = getSourceUrl();
        targetUrl = rewriter.rewrite( this, sourceUrl, UrlRewriter.Direction.IN, urlRuleName );
        setAttribute( AbstractGatewayFilter.TARGET_REQUEST_URL_ATTRIBUTE_NAME, targetUrl );
      }
    } else {
      targetUrl = (Template)getAttribute( AbstractGatewayFilter.SOURCE_REQUEST_URL_ATTRIBUTE_NAME );
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    }
  }

  private String rewriteValue( UrlRewriter rewriter, String value, String rule ) {
    try {
      Template input = Parser.parse( value );
      Template output = rewriter.rewrite( this, input, UrlRewriter.Direction.IN, rule );
      value = output.getPattern();
    } catch( URISyntaxException e ) {
      LOG.failedToParseValueForUrlRewrite( value );
    }
    return value;
  }
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  }

  //TODO: Need to limit which values are attempted to be filtered by the name.
  private String filterValueString( String name, String value, String rule ) {
    try {
      Template input = Parser.parse( value );
      if( input != null ) {
        Template output = rewriter.rewrite( resolver, input, direction, rule );
        if( output != null ) {
          value = output.getPattern();
        } else {
          LOG.failedToFilterValue( value, rule );
        }
      } else {
        LOG.failedToParseValueForUrlRewrite( value );
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  }

  //TODO: Need to limit which values are attempted to be filtered by the name.
  protected String filterValueString( String name, String value, String rule ) {
    try {
      Template input = Parser.parse( value );
      Template output = rewriter.rewrite( resolver, input, direction, rule );
      if( output != null ) {
        value = output.getPattern();
      }
    } catch( URISyntaxException e ) {
      LOG.failedToParseValueForUrlRewrite( value );
    }
    return value;
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    }
  }

  @Override
  public UrlRewriteStepStatus process( UrlRewriteContext context ) throws Exception {
    Template rewritten = expander.expandToTemplate( template, context.getParameters(), context.getEvaluator() );
    context.setCurrentUrl( rewritten );
    return UrlRewriteStepStatus.SUCCESS;
  }
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    this.direction = direction;
  }

  protected String filterValueString( String name, String value, String rule ) {
    try {
      Template input = Parser.parse( value );
      Template output = rewriter.rewrite( resolver, input, direction, rule );
      value = output.getPattern();
    } catch( URISyntaxException e ) {
      LOG.failedToParseValueForUrlRewrite( value );
    }
    return value;
  }
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  //TODO: Need to limit which values are attempted to be filtered by the name.
  @Override
  protected String filterValue( String name, String value, String rule ) {
    try {
      Template input = Parser.parse( value );
      Template output = rewriter.rewrite( resolver, input, direction, rule );
      value = output.getPattern();
    } catch( URISyntaxException e ) {
      LOG.failedToParseValueForUrlRewrite( value );
    }
    return value;
  }
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    //TODO: The resulting pathInfo + query needs to be added to the servlet context somehow so that filters don't need to rebuild it.  This is done in HttpClientDispatch right now for example.
    String query = httpRequest.getQueryString();
    String path = httpRequest.getPathInfo() + ( query == null ? "" : "?" + query );

    Template pathTemplate;
    try {
      pathTemplate = Parser.parse( path );
    } catch( URISyntaxException e ) {
      throw new ServletException( e );
    }
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    String sourcePathInfo = request.getPathInfo();
    String sourcePattern = getConfig().getInitParameter( "pattern" );
    String targetPattern = getConfig().getInitParameter( "target" );

    //TODO: Some of the compilation should be done at servlet init for performance reasons.
    Template sourceTemplate = Parser.parse( sourcePattern );
    Template targetTemplate = Parser.parse( targetPattern );

    Resolver resolver = new DispatchParamResolver( getConfig(), request );
    URI sourceUri = new URI( sourcePathInfo );
    URI targetUri = Rewriter.rewrite( sourceUri, sourceTemplate, targetTemplate, resolver, null );
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    this.cookiesFilterName = config.getInitParameter( UrlRewriteServletFilter.REQUEST_COOKIES_FILTER_PARAM );
    this.cookiesFilterConfig = getRewriteFilterConfig( cookiesFilterName, UrlRewriteServletFilter.COOKIES_MIME_TYPE );
  }

  private Template getSourceUrl() {
    Template urlTemplate = null;
    StringBuffer urlString = super.getRequestURL();
    String queryString = super.getQueryString();
    if( queryString != null ) {
      urlString.append( '?' );
      urlString.append( queryString );
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  • org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteProcessor
  • org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteProcessorTest
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