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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_LOG_NET_LOG_UTIL_H_
#define NET_LOG_NET_LOG_UTIL_H_
#include <memory>
#include <set>
#include "base/trace_event/trace_event.h" // IWYU pragma: export
#include "net/base/net_export.h"
#include "net/log/net_log.h"
namespace net {
class URLRequestContext;
// Request mode for GetNetConstants.
enum class NetConstantsRequestMode {
// Requests all constants including field trials. This is the default mode.
kDefault,
// Requests only minimum constants. Used for tracing metadata.
kTracing,
};
// Utility methods for creating NetLog dumps.
// Creates a dictionary containing a legend for net/ constants.
NET_EXPORT base::Value::Dict GetNetConstants(
NetConstantsRequestMode request_mode = NetConstantsRequestMode::kDefault);
// Retrieves a dictionary containing information about the current state of
// |context|.
//
// May only be called on |context|'s thread.
NET_EXPORT base::Value::Dict GetNetInfo(URLRequestContext* context);
// Takes in a set of contexts and a NetLog::Observer, and passes in
// NetLog::Entries to the observer for certain NetLogSources with pending
// events. This allows requests that were ongoing when logging was started to
// have an initial event that has some information. This is particularly useful
// for hung requests. Note that these calls are not protected by the NetLog's
// lock, so this should generally be invoked before the observer starts watching
// the NetLog.
//
// All members of |contexts| must be using the same NetLog, and live on the
// current thread.
//
// Currently only creates events for URLRequests.
//
// The reason for not returning a list of NetLog::Entries is that entries don't
// own most of their data, so it's simplest just to pass them in to the observer
// directly while their data is on the stack.
NET_EXPORT void CreateNetLogEntriesForActiveObjects(
const std::set<URLRequestContext*>& contexts,
NetLog::ThreadSafeObserver* observer);
// Creates a trace Flow from a NetLogWithSource.
NET_EXPORT perfetto::Flow NetLogWithSourceToFlow(
const NetLogWithSource& net_log);
} // namespace net
#endif // NET_LOG_NET_LOG_UTIL_H_
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