示例#1
0
  private void init() throws Exception {
    // The states of client that is invalid in this request
    Aliases aliases = null;
    String corename = "";
    String origCorename = null;
    // set a request timer which can be reused by requests if needed
    req.setAttribute(SolrRequestParsers.REQUEST_TIMER_SERVLET_ATTRIBUTE, new RTimerTree());
    // put the core container in request attribute
    req.setAttribute("org.apache.solr.CoreContainer", cores);
    path = req.getServletPath();
    if (req.getPathInfo() != null) {
      // this lets you handle /update/commit when /update is a servlet
      path += req.getPathInfo();
    }
    // check for management path
    String alternate = cores.getManagementPath();
    if (alternate != null && path.startsWith(alternate)) {
      path = path.substring(0, alternate.length());
    }
    // unused feature ?
    int idx = path.indexOf(':');
    if (idx > 0) {
      // save the portion after the ':' for a 'handler' path parameter
      path = path.substring(0, idx);
    }

    boolean usingAliases = false;

    // Check for container handlers
    handler = cores.getRequestHandler(path);
    if (handler != null) {
      solrReq = SolrRequestParsers.DEFAULT.parse(null, path, req);
      solrReq.getContext().put(CoreContainer.class.getName(), cores);
      requestType = RequestType.ADMIN;
      action = ADMIN;
      return;
    } else {
      // otherwise, we should find a core from the path
      idx = path.indexOf("/", 1);
      if (idx > 1) {
        // try to get the corename as a request parameter first
        corename = path.substring(1, idx);

        // look at aliases
        if (cores.isZooKeeperAware()) {
          origCorename = corename;
          ZkStateReader reader = cores.getZkController().getZkStateReader();
          aliases = reader.getAliases();
          if (aliases != null && aliases.collectionAliasSize() > 0) {
            usingAliases = true;
            String alias = aliases.getCollectionAlias(corename);
            if (alias != null) {
              collectionsList = StrUtils.splitSmart(alias, ",", true);
              corename = collectionsList.get(0);
            }
          }
        }

        core = cores.getCore(corename);
        if (core != null) {
          path = path.substring(idx);
        } else if (cores.isCoreLoading(
            corename)) { // extra mem barriers, so don't look at this before trying to get core
          throw new SolrException(ErrorCode.SERVICE_UNAVAILABLE, "SolrCore is loading");
        } else {
          // the core may have just finished loading
          core = cores.getCore(corename);
          if (core != null) {
            path = path.substring(idx);
          }
        }
      }
      if (core == null) {
        if (!cores.isZooKeeperAware()) {
          core = cores.getCore("");
        }
      }
    }

    if (core == null && cores.isZooKeeperAware()) {
      // we couldn't find the core - lets make sure a collection was not specified instead
      core = getCoreByCollection(corename);
      if (core != null) {
        // we found a core, update the path
        path = path.substring(idx);
        if (collectionsList == null) collectionsList = new ArrayList<>();
        collectionsList.add(corename);
      }

      // if we couldn't find it locally, look on other nodes
      extractRemotePath(corename, origCorename, idx);
      if (action != null) return;
    }

    // With a valid core...
    if (core != null) {
      MDCLoggingContext.setCore(core);
      config = core.getSolrConfig();
      // get or create/cache the parser for the core
      SolrRequestParsers parser = config.getRequestParsers();

      // Determine the handler from the url path if not set
      // (we might already have selected the cores handler)
      extractHandlerFromURLPath(parser);
      if (action != null) return;

      // With a valid handler and a valid core...
      if (handler != null) {
        // if not a /select, create the request
        if (solrReq == null) {
          solrReq = parser.parse(core, path, req);
        }

        if (usingAliases) {
          processAliases(aliases, collectionsList);
        }

        action = PROCESS;
        return; // we are done with a valid handler
      }
    }
    log.debug("no handler or core retrieved for " + path + ", follow through...");

    action = PASSTHROUGH;
  }
示例#2
0
  public void handleRequest(RequestGetter requestGetter) {
    MDCLoggingContext.reset();
    MDCLoggingContext.setNode(cores);

    String path = requestGetter.getPath();
    solrParams = requestGetter.getSolrParams();
    SolrRequestHandler handler = null;
    String corename = "";
    String origCorename = null;
    try {
      // set a request timer which can be reused by requests if needed
      // req.setAttribute(SolrRequestParsers.REQUEST_TIMER_SERVLET_ATTRIBUTE, new RTimer());
      // put the core container in request attribute
      // req.setAttribute("org.apache.solr.CoreContainer", cores);
      // check for management path
      String alternate = cores.getManagementPath();
      if (alternate != null && path.startsWith(alternate)) {
        path = path.substring(0, alternate.length());
      }
      // unused feature ?
      int idx = path.indexOf(':');
      if (idx > 0) {
        // save the portion after the ':' for a 'handler' path parameter
        path = path.substring(0, idx);
      }

      boolean usingAliases = false;
      List<String> collectionsList = null;

      // Check for container handlers
      handler = cores.getRequestHandler(path);
      if (handler != null) {
        solrReq = parseSolrQueryRequest(SolrRequestParsers.DEFAULT, requestGetter);
        handleAdminRequest(handler, solrReq);
        return;
      } else {
        // otherwise, we should find a core from the path
        idx = path.indexOf("/", 1);
        if (idx > 1) {
          // try to get the corename as a request parameter first
          corename = path.substring(1, idx);

          // look at aliases
          if (cores.isZooKeeperAware()) {
            origCorename = corename;
            ZkStateReader reader = cores.getZkController().getZkStateReader();
            aliases = reader.getAliases();
            if (aliases != null && aliases.collectionAliasSize() > 0) {
              usingAliases = true;
              String alias = aliases.getCollectionAlias(corename);
              if (alias != null) {
                collectionsList = StrUtils.splitSmart(alias, ",", true);
                corename = collectionsList.get(0);
              }
            }
          }

          core = cores.getCore(corename);

          if (core != null) {
            path = path.substring(idx);
          }
        }

        // add collection name
        if (core == null && StringUtils.isNotBlank(requestGetter.getCollection())) {
          corename = requestGetter.getCollection();
          core = cores.getCore(corename);
        }

        if (core == null) {
          if (!cores.isZooKeeperAware()) {
            core = cores.getCore("");
          }
        }
      }

      if (core == null && cores.isZooKeeperAware()) {
        // we couldn't find the core - lets make sure a collection was not specified instead
        core = getCoreByCollection(cores, corename);

        if (core != null) {
          // we found a core, update the path
          path = path.substring(idx);
        }

        // try the default core
        if (core == null) {
          core = cores.getCore("");
          if (core != null) {}
        }
      }

      // With a valid core...
      if (core != null) {
        MDCLoggingContext.setCore(core);
        final SolrConfig config = core.getSolrConfig();
        // get or create/cache the parser for the core
        SolrRequestParsers parser = config.getRequestParsers();

        // Determine the handler from the url path if not set
        // (we might already have selected the cores handler)
        if (handler == null && path.length() > 1) { // don't match "" or "/" as valid path
          handler = core.getRequestHandler(path);

          if (handler == null) {
            // may be a restlet path
            // Handle /schema/* paths via Restlet
            if (path.equals("/schema") || path.startsWith("/schema/")) {
              throw new SolrException(
                  SolrException.ErrorCode.BAD_REQUEST, "unsupport /schema/**, use http solr");
            }
          }
          // no handler yet but allowed to handle select; let's check
          if (handler == null && parser.isHandleSelect()) {
            if ("/select".equals(path) || "/select/".equals(path)) {
              solrReq = parseSolrQueryRequest(parser, requestGetter);

              invalidStates =
                  checkStateIsValid(cores, solrReq.getParams().get(CloudSolrClient.STATE_VERSION));
              String qt = solrReq.getParams().get(CommonParams.QT);
              handler = core.getRequestHandler(qt);
              if (handler == null) {
                throw new SolrException(
                    SolrException.ErrorCode.BAD_REQUEST, "unknown handler: " + qt);
              }
              if (qt != null
                  && qt.startsWith("/")
                  && (handler instanceof ContentStreamHandlerBase)) {
                // For security reasons it's a bad idea to allow a leading '/', ex:
                // /select?qt=/update see SOLR-3161
                // There was no restriction from Solr 1.4 thru 3.5 and it's not supported for update
                // handlers.
                throw new SolrException(
                    SolrException.ErrorCode.BAD_REQUEST,
                    "Invalid Request Handler ('qt').  Do not use /select to access: " + qt);
              }
            }
          }
        }

        // With a valid handler and a valid core...
        if (handler != null) {
          // if not a /select, create the request
          if (solrReq == null) {
            solrReq = parseSolrQueryRequest(parser, requestGetter);
          }

          if (usingAliases) {
            processAliases(solrReq, aliases, collectionsList);
          }

          SolrQueryResponse solrRsp = new SolrQueryResponse();
          SolrRequestInfo.setRequestInfo(new SolrRequestInfo(solrReq, solrRsp));
          this.execute(handler, solrReq, solrRsp);
          QueryResponseWriter responseWriter = core.getQueryResponseWriter(solrReq);
          if (invalidStates != null)
            solrReq.getContext().put(CloudSolrClient.STATE_VERSION, invalidStates);
          writeResponse(solrRsp, responseWriter, solrReq);

          return; // we are done with a valid handler
        }
      }
      logger.debug("no handler or core retrieved for {}, follow through...", path);
      throw new SolrException(
          SolrException.ErrorCode.BAD_REQUEST, "no handler or core retrieved for " + path);
    } catch (Throwable ex) {
      sendError(core, solrReq, ex);
      // walk the the entire cause chain to search for an Error
      Throwable t = ex;
      while (t != null) {
        if (t instanceof Error) {
          if (t != ex) {
            logger.error(
                "An Error was wrapped in another exception - please report complete stacktrace on SOLR-6161",
                ex);
          }
          throw (Error) t;
        }
        t = t.getCause();
      }
      return;
    } finally {
      try {
        if (solrReq != null) {
          logger.debug("Closing out SolrRequest: {}", solrReq);
          solrReq.close();
        }
      } finally {
        try {
          if (core != null) {
            core.close();
          }
        } finally {
          SolrRequestInfo.clearRequestInfo();
        }
      }
      MDCLoggingContext.clear();
    }
  }