Examples with UnavailableException javax.servlet.UnavailableException used on opensource projects

Example 66 with UnavailableException

use of javax.servlet.UnavailableException in project lucene-solr by apache.

the class SolrDispatchFilter method doFilter.

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain, boolean retry) throws IOException, ServletException {
    if (!(request instanceof HttpServletRequest))
        return;
    try {
        if (cores == null || cores.isShutDown()) {
            try {
                init.await();
            } catch (InterruptedException e) {
            //well, no wait then
            }
            final String msg = "Error processing the request. CoreContainer is either not initialized or shutting down.";
            if (cores == null || cores.isShutDown()) {
                log.error(msg);
                throw new UnavailableException(msg);
            }
        }
        AtomicReference<ServletRequest> wrappedRequest = new AtomicReference<>();
        if (!authenticateRequest(request, response, wrappedRequest)) {
            // sent
            return;
        }
        if (wrappedRequest.get() != null) {
            request = wrappedRequest.get();
        }
        request = closeShield(request, retry);
        response = closeShield(response, retry);
        if (cores.getAuthenticationPlugin() != null) {
            log.debug("User principal: {}", ((HttpServletRequest) request).getUserPrincipal());
        }
        // No need to even create the HttpSolrCall object if this path is excluded.
        if (excludePatterns != null) {
            String requestPath = ((HttpServletRequest) request).getServletPath();
            String extraPath = ((HttpServletRequest) request).getPathInfo();
            if (extraPath != null) {
                // In embedded mode, servlet path is empty - include all post-context path here for
                // testing
                requestPath += extraPath;
            }
            for (Pattern p : excludePatterns) {
                Matcher matcher = p.matcher(requestPath);
                if (matcher.lookingAt()) {
                    chain.doFilter(request, response);
                    return;
                }
            }
        }
        HttpSolrCall call = getHttpSolrCall((HttpServletRequest) request, (HttpServletResponse) response, retry);
        ExecutorUtil.setServerThreadFlag(Boolean.TRUE);
        try {
            Action result = call.call();
            switch(result) {
                case PASSTHROUGH:
                    chain.doFilter(request, response);
                    break;
                case RETRY:
                    doFilter(request, response, chain, true);
                    break;
                case FORWARD:
                    request.getRequestDispatcher(call.getPath()).forward(request, response);
                    break;
            }
        } finally {
            call.destroy();
            ExecutorUtil.setServerThreadFlag(null);
        }
    } finally {
        consumeInputFully((HttpServletRequest) request);
    }
}

Example 67 with UnavailableException

use of javax.servlet.UnavailableException in project sling by apache.

the class ServletWrapper method service.

/**
     * Call the servlet.
     * @param request The current request.
     * @param response The current response.
     * @throws Exception
     */
public void service(HttpServletRequest request, HttpServletResponse response) throws Exception {
    try {
        if ((available > 0L) && (available < Long.MAX_VALUE)) {
            if (available > System.currentTimeMillis()) {
                response.setDateHeader("Retry-After", available);
                response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, "Servlet unavailable.");
                logger.error("Java servlet {} is unavailable.", this.sourcePath);
                return;
            }
            // Wait period has expired. Reset.
            available = 0;
        }
        final Servlet servlet = this.getServlet();
        // invoke the servlet
        if (servlet instanceof SingleThreadModel) {
            // of the page is determined right before servicing
            synchronized (this) {
                servlet.service(request, response);
            }
        } else {
            servlet.service(request, response);
        }
    } catch (final UnavailableException ex) {
        int unavailableSeconds = ex.getUnavailableSeconds();
        if (unavailableSeconds <= 0) {
            // Arbitrary default
            unavailableSeconds = 60;
        }
        available = System.currentTimeMillis() + (unavailableSeconds * 1000L);
        response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, ex.getMessage());
        logger.error("Java servlet {} is unavailable.", this.sourcePath);
    }
}

Example 68 with UnavailableException

use of javax.servlet.UnavailableException in project Payara by payara.

the class DefaultServlet method init.

/**
 * Initialize this servlet.
 */
public void init() throws ServletException {
    ServletConfig sc = getServletConfig();
    if (sc.getInitParameter("debug") != null)
        debug = Integer.parseInt(sc.getInitParameter("debug"));
    if (sc.getInitParameter("input") != null)
        input = Integer.parseInt(sc.getInitParameter("input"));
    if (sc.getInitParameter("output") != null)
        output = Integer.parseInt(sc.getInitParameter("output"));
    listings = Boolean.parseBoolean(sc.getInitParameter("listings"));
    String sortedByInitParam = sc.getInitParameter("sortedBy");
    if (sortedByInitParam != null) {
        sortedBy = Enum.valueOf(SortedBy.class, sortedByInitParam);
    }
    if (sc.getInitParameter("readonly") != null)
        readOnly = Boolean.parseBoolean(sc.getInitParameter("readonly"));
    if (sc.getInitParameter("sendfileSize") != null)
        sendfileSize = Integer.parseInt(sc.getInitParameter("sendfileSize")) * 1024;
    if (sc.getInitParameter("maxHeaderRangeItems") != null) {
        maxHeaderRangeItems = Integer.parseInt(sc.getInitParameter("maxHeaderRangeItems"));
    }
    fileEncoding = sc.getInitParameter("fileEncoding");
    globalXsltFile = sc.getInitParameter("globalXsltFile");
    contextXsltFile = sc.getInitParameter("contextXsltFile");
    localXsltFile = sc.getInitParameter("localXsltFile");
    readmeFile = sc.getInitParameter("readmeFile");
    if (sc.getInitParameter("useAcceptRanges") != null)
        useAcceptRanges = Boolean.parseBoolean(sc.getInitParameter("useAcceptRanges"));
    // Sanity check on the specified buffer sizes
    if (input < 256)
        input = 256;
    if (output < 256)
        output = 256;
    if (debug > 0) {
        log("DefaultServlet.init:  input buffer size=" + input + ", output buffer size=" + output);
    }
    // Load the proxy dir context.
    resources = (ProxyDirContext) getServletContext().getAttribute(Globals.RESOURCES_ATTR);
    if (resources == null) {
        try {
            resources = (ProxyDirContext) new InitialContext().lookup(RESOURCES_JNDI_NAME);
        } catch (NamingException e) {
            throw new ServletException("No resources", e);
        } catch (ClassCastException e) {
        // Failed : Not the right type
        }
    }
    if (resources == null) {
        throw new UnavailableException("No resources");
    }
    try {
        alternateDocBases = getAlternateDocBases();
    } catch (ClassCastException e) {
    // Failed : Not the right type
    }
}

Example 69 with UnavailableException

use of javax.servlet.UnavailableException in project Payara by payara.

the class InvokerServlet method init.

/**
 * Initialize this servlet.
 */
public synchronized void init() throws ServletException {
    // Ensure that our ContainerServlet properties have been set
    if ((wrapper == null) || (context == null))
        throw new UnavailableException(rb.getString(LogFacade.SET_WRAPPER_NOT_CALLED_EXCEPTION));
    // Set our properties from the initialization parameters
    String value = null;
    try {
        value = getServletConfig().getInitParameter("debug");
        debug = Integer.parseInt(value);
    } catch (Throwable t) {
        ;
    }
    if (debug >= 1)
        log("init: Associated with Context '" + context.getPath() + "'");
}

Example 70 with UnavailableException

use of javax.servlet.UnavailableException in project tomcat70 by apache.

the class StandardWrapper method initServlet.

private synchronized void initServlet(Servlet servlet) throws ServletException {
    if (instanceInitialized && !singleThreadModel)
        return;
    // Call the initialization method of this servlet
    try {
        instanceSupport.fireInstanceEvent(InstanceEvent.BEFORE_INIT_EVENT, servlet);
        if (Globals.IS_SECURITY_ENABLED) {
            boolean success = false;
            try {
                Object[] args = new Object[] { facade };
                SecurityUtil.doAsPrivilege("init", servlet, classType, args);
                success = true;
            } finally {
                if (!success) {
                    // destroy() will not be called, thus clear the reference now
                    SecurityUtil.remove(servlet);
                }
            }
        } else {
            servlet.init(facade);
        }
        instanceInitialized = true;
        instanceSupport.fireInstanceEvent(InstanceEvent.AFTER_INIT_EVENT, servlet);
    } catch (UnavailableException f) {
        instanceSupport.fireInstanceEvent(InstanceEvent.AFTER_INIT_EVENT, servlet, f);
        unavailable(f);
        throw f;
    } catch (ServletException f) {
        instanceSupport.fireInstanceEvent(InstanceEvent.AFTER_INIT_EVENT, servlet, f);
        // said so, so do not call unavailable(null).
        throw f;
    } catch (Throwable f) {
        ExceptionUtils.handleThrowable(f);
        getServletContext().log("StandardWrapper.Throwable", f);
        instanceSupport.fireInstanceEvent(InstanceEvent.AFTER_INIT_EVENT, servlet, f);
        // said so, so do not call unavailable(null).
        throw new ServletException(sm.getString("standardWrapper.initException", getName()), f);
    }
}