public LinkValidationResult validateLink()

in src/main/java/org/apache/maven/doxia/linkcheck/validation/OnlineHTTPLinkValidator.java [130:248]
102 lines of code
20 McCabe index (conditional complexity)

    public LinkValidationResult validateLink( LinkValidationItem lvi )
    {
        if ( this.cl == null )
        {
            initHttpClient();
        }

        if ( this.http.getHttpClientParameters() != null )
        {
            for ( Map.Entry<Object, Object> entry : this.http.getHttpClientParameters().entrySet() )
            {
                if ( entry.getValue() != null )
                {
                    System.setProperty( entry.getKey().toString(), entry.getValue().toString() );
                }
            }
        }

        String link = lvi.getLink();
        String anchor = "";
        int idx = link.indexOf( '#' );
        if ( idx != -1 )
        {
            anchor = link.substring( idx + 1 );
            link = link.substring( 0, idx );
        }

        try
        {
            if ( link.startsWith( "/" ) )
            {
                if ( getBaseURL() == null )
                {
                    LOG.warn( "Cannot check link [" + link + "] in page [" + lvi.getSource()
                            + "], as no base URL has been set!" );

                    return new LinkValidationResult( LinkcheckFileResult.WARNING_LEVEL, false,
                                                     "No base URL specified" );
                }

                link = getBaseURL() + link;
            }

            HttpResponse response = null;
            try
            {
                response = checkLink( link, 0 );
            }
            catch ( IOException | HttpException ex )
            {
                LOG.debug( "Received: [" + ex + "] for [" + link + "] in page [" + lvi.getSource() + "]", ex );

                return new LinkValidationResult( LinkcheckFileResult.ERROR_LEVEL, false, ex.getClass().getName()
                    + " : " + ex.getMessage() );
            }

            if ( response == null )
            {
                return new LinkValidationResult( LinkcheckFileResult.ERROR_LEVEL, false,
                                                 "Cannot retrieve HTTP Status" );
            }

            int statusCode = response.getStatusLine().getStatusCode();
            if ( statusCode == HttpStatus.SC_OK )
            {
                // check if the anchor is present
                if ( anchor.length() > 0 )
                {
                    String content = EntityUtils.toString( response.getEntity() );

                    if ( !Anchors.matchesAnchor( content, anchor ) )
                    {
                        return new HTTPLinkValidationResult( LinkcheckFileResult.VALID_LEVEL, false,
                            "Missing anchor '" + anchor + "'" );
                    }
                }
                return new HTTPLinkValidationResult( LinkcheckFileResult.VALID_LEVEL, true,
                        statusCode, response.getStatusLine().getReasonPhrase() );
            }

            String msg = "Received: [" + statusCode + "] for [" + link + "] in page ["
                    + lvi.getSource() + "]";
            // If there's a redirection, add a warning
            if ( statusCode == HttpStatus.SC_MOVED_PERMANENTLY
                || statusCode == HttpStatus.SC_MOVED_TEMPORARILY
                || statusCode == HttpStatus.SC_TEMPORARY_REDIRECT )
            {
                LOG.warn( msg );

                return new HTTPLinkValidationResult( LinkcheckFileResult.WARNING_LEVEL, true, statusCode,
                        response.getStatusLine().getReasonPhrase() );
            }

            LOG.debug( msg );

            return new HTTPLinkValidationResult( LinkcheckFileResult.ERROR_LEVEL, false, statusCode,
                    response.getStatusLine().getReasonPhrase() );
        }
        catch ( IOException ex )
        {
            String msg = "Received: [" + ex + "] for [" + link + "] in page [" + lvi.getSource() + "]";
            LOG.error( msg, ex );

            return new LinkValidationResult( LinkcheckFileResult.ERROR_LEVEL, false, ex.getMessage() );
        }
        finally
        {
            if ( this.http.getHttpClientParameters() != null )
            {
                for ( Map.Entry<Object, Object> entry : this.http.getHttpClientParameters().entrySet() )
                {
                    if ( entry.getValue() != null )
                    {
                        System.getProperties().remove( entry.getKey().toString() );
                    }
                }
            }
        }
    }