示例#1
0
const std::vector<McrouterRouteHandlePtr>*
RouteHandleMap::getTargetsForKeyFast(folly::StringPiece prefix,
                                     folly::StringPiece key) const {
  // empty prefix => route to default route
  if (prefix.empty()) {
    return &getBySingleRoute(defaultRoute_, key);
  }

  // route to all routes
  if (prefix == "/*/*/") {
    return &allRoutes_->getTargetsForKey(key);
  }

  auto starPos = prefix.find("*");
  if (starPos == std::string::npos) {
    // no stars at all
    return &getBySingleRoute(prefix, key);
  }

  if (prefix.endsWith("/*/") && starPos == prefix.size() - 2) {
    // route to all clusters of some region (/region/*/)
    auto region = prefix.subpiece(1, prefix.size() - 4);
    auto it = byRegion_.find(region);
    if (it == byRegion_.end()) {
      return &emptyV_;
    }
    return &it->second->getTargetsForKey(key);
  }

  // no other types supported
  return nullptr;
}
示例#2
0
const std::vector<McrouterRouteHandlePtr>*
RouteHandleMap::getTargetsForKeyFast(folly::StringPiece prefix,
                                     folly::StringPiece key) const {
  const std::vector<McrouterRouteHandlePtr>* result = nullptr;
  if (prefix.empty()) {
    // empty prefix => route to default route
    result = &defaultRouteMap_->getTargetsForKey(key);
  } else if (prefix == "/*/*/") {
    // route to all routes
    result = &allRoutes_->getTargetsForKey(key);
  } else {
    auto starPos = prefix.find("*");
    if (starPos == std::string::npos) {
      // no stars at all
      auto it = byRoute_.find(prefix);
      result = it == byRoute_.end()
        ? &emptyV_
        : &it->second->getTargetsForKey(key);
    } else if (prefix.endsWith("/*/") && starPos == prefix.size() - 2) {
      // route to all clusters of some region (/region/*/)
      auto region = prefix.subpiece(1, prefix.size() - 4);
      auto it = byRegion_.find(region);
      result = it == byRegion_.end()
        ? &emptyV_
        : &it->second->getTargetsForKey(key);
    }
  }
  if (sendInvalidRouteToDefault_ && result != nullptr && result->empty()) {
    return &defaultRouteMap_->getTargetsForKey(key);
  }
  return result;
}