zircon/system/ulib/fs/metrics/include/fs/metrics/events.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#pragma once

#include <cstdint>

#include <fbl/algorithm.h>

namespace fs_metrics {

// Collection of all events being recorded by local storage.
enum class Event : uint32_t {
  // Vnode Level operations.
  kClose = 2,
  kRead = 3,
  kWrite = 4,
  kAppend = 5,
  kTruncate = 6,
  kSetAttr = 7,
  kGetAttr = 8,
  kReadDir = 10,
  kSync = 9,
  kLookUp = 11,
  kCreate = 12,
  kLink = 1,
  kUnlink = 13,

  // Fs Manager Level operation.
  kDataCorruption = 14,
};

// Collection of Vnode Events.
constexpr Event kVnodeEvents[] = {
    Event::kClose,   Event::kRead,    Event::kWrite,   Event::kAppend, Event::kTruncate,
    Event::kSetAttr, Event::kGetAttr, Event::kReadDir, Event::kSync,   Event::kLookUp,
    Event::kCreate,  Event::kLink,    Event::kUnlink,
};

// Number of different metric types recorded at Vnode level.
constexpr uint64_t kVnodeEventCount = fbl::count_of(kVnodeEvents);

// Collection of FsManager events.
constexpr Event kFsManagerEvents[] = {Event::kDataCorruption};

// Number of different metric types recorded at Fs Manager level.
constexpr uint64_t kFsManagerEventCount = fbl::count_of(kFsManagerEvents);

// Total number of events in the registry.
constexpr uint64_t kEventCount = kVnodeEventCount + kFsManagerEventCount;

}  // namespace fs_metrics