Grcov report - header_cluster

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#include "source/common/router/header_cluster_specifier.h"

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#include "source/common/router/delegating_route_impl.h"

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namespace Envoy {

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namespace Router {

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HeaderClusterSpecifierPlugin::HeaderClusterSpecifierPlugin(absl::string_view cluster_header)

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    : cluster_header_(cluster_header) {}

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RouteConstSharedPtr HeaderClusterSpecifierPlugin::route(RouteEntryAndRouteConstSharedPtr parent,

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                                                        const Http::RequestHeaderMap& headers,

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                                                        const StreamInfo::StreamInfo&,

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                                                        uint64_t) const {

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  const auto entry = headers.get(cluster_header_);

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  absl::string_view cluster_name;

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  if (!entry.empty()) {

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    // This is an implicitly untrusted header, so per the API documentation only

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    // the first value is used.

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    cluster_name = entry[0]->value().getStringView();

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  return std::make_shared<DynamicRouteEntry>(std::move(parent), std::string(cluster_name));

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} // namespace Router

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} // namespace Envoy