Ben Chan | bc49ac7 | 2012-04-10 19:59:45 -0700 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "shill/scope_logger.h" |
| 6 | |
| 7 | #include <vector> |
| 8 | |
| 9 | #include <base/string_tokenizer.h> |
| 10 | #include <base/string_util.h> |
| 11 | |
| 12 | using std::string; |
| 13 | using std::vector; |
| 14 | |
| 15 | namespace shill { |
| 16 | |
| 17 | namespace { |
| 18 | |
| 19 | const int kDefaultVerboseLevel = 0; |
| 20 | |
| 21 | // Scope names corresponding to the scope defined by ScopeLogger::Scope. |
| 22 | const char *const kScopeNames[] = { |
| 23 | "cellular", |
| 24 | "connection", |
| 25 | "crypto", |
| 26 | "dbus", |
| 27 | "device", |
| 28 | "dhclient", |
| 29 | "ethernet", |
| 30 | "inet", |
| 31 | "manager", |
| 32 | "metrics", |
| 33 | "modem", |
| 34 | "portal", |
| 35 | "profile", |
| 36 | "resolv", |
| 37 | "resolvfiles", |
| 38 | "rtnl", |
| 39 | "service", |
| 40 | "storage", |
| 41 | "task", |
| 42 | "vpn", |
| 43 | "wifi", |
| 44 | }; |
| 45 | |
| 46 | COMPILE_ASSERT(arraysize(kScopeNames) == ScopeLogger::kNumScopes, |
| 47 | scope_tags_does_not_have_expected_number_of_strings); |
| 48 | |
| 49 | // TODO(benchan): not using LAZY_INSTANCE_INITIALIZER |
| 50 | // because of http://crbug.com/114828 |
| 51 | base::LazyInstance<ScopeLogger> g_scope_logger = {0, {{0}}}; |
| 52 | |
| 53 | } // namespace |
| 54 | |
| 55 | // static |
| 56 | ScopeLogger* ScopeLogger::GetInstance() { |
| 57 | return g_scope_logger.Pointer(); |
| 58 | } |
| 59 | |
| 60 | ScopeLogger::ScopeLogger() |
| 61 | : verbose_level_(kDefaultVerboseLevel) { |
| 62 | } |
| 63 | |
| 64 | ScopeLogger::~ScopeLogger() { |
| 65 | } |
| 66 | |
| 67 | bool ScopeLogger::IsLogEnabled(Scope scope, int verbose_level) const { |
| 68 | CHECK_GE(scope, 0); |
| 69 | CHECK_LT(scope, kNumScopes); |
| 70 | |
| 71 | return scope_enabled_[scope] && verbose_level <= verbose_level_; |
| 72 | } |
| 73 | |
| 74 | string ScopeLogger::GetAllScopeNames() const { |
| 75 | vector<string> names(kScopeNames, kScopeNames + arraysize(kScopeNames)); |
Ben Chan | 1c72260 | 2012-04-17 17:37:35 -0700 | [diff] [blame^] | 76 | return JoinString(names, '+'); |
Ben Chan | bc49ac7 | 2012-04-10 19:59:45 -0700 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | string ScopeLogger::GetEnabledScopeNames() const { |
| 80 | vector<string> names; |
| 81 | for (size_t i = 0; i < arraysize(kScopeNames); ++i) { |
| 82 | if (scope_enabled_[i]) |
| 83 | names.push_back(kScopeNames[i]); |
| 84 | } |
| 85 | return JoinString(names, '+'); |
| 86 | } |
| 87 | |
| 88 | void ScopeLogger::EnableScopesByName(const string &expression) { |
| 89 | if (expression.empty()) { |
| 90 | DisableAllScopes(); |
| 91 | return; |
| 92 | } |
| 93 | |
| 94 | // As described in the header file, if the first scope name in the |
| 95 | // sequence specified by |expression| is not prefixed by a plus or |
| 96 | // minus sign, it indicates that all scopes are first disabled before |
| 97 | // enabled by |expression|. |
| 98 | if (expression[0] != '+' && expression[0] != '-') |
| 99 | DisableAllScopes(); |
| 100 | |
| 101 | bool enable_scope = true; |
| 102 | StringTokenizer tokenizer(expression, "+-"); |
| 103 | tokenizer.set_options(StringTokenizer::RETURN_DELIMS); |
| 104 | while (tokenizer.GetNext()) { |
| 105 | if (tokenizer.token_is_delim()) { |
| 106 | enable_scope = (tokenizer.token() == "+"); |
| 107 | continue; |
| 108 | } |
| 109 | |
| 110 | if (tokenizer.token().empty()) |
| 111 | continue; |
| 112 | |
| 113 | size_t i; |
| 114 | for (i = 0; i < arraysize(kScopeNames); ++i) { |
| 115 | if (tokenizer.token() == kScopeNames[i]) { |
| 116 | SetScopeEnabled(static_cast<Scope>(i), enable_scope); |
| 117 | break; |
| 118 | } |
| 119 | } |
| 120 | LOG_IF(WARNING, i == arraysize(kScopeNames)) |
| 121 | << "Unknown scope '" << tokenizer.token() << "'"; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | void ScopeLogger::DisableAllScopes() { |
| 126 | scope_enabled_.reset(); |
| 127 | } |
| 128 | |
| 129 | void ScopeLogger::SetScopeEnabled(Scope scope, bool enabled) { |
| 130 | CHECK_GE(scope, 0); |
| 131 | CHECK_LT(scope, kNumScopes); |
| 132 | |
| 133 | scope_enabled_[scope] = enabled; |
| 134 | } |
| 135 | |
| 136 | } // namespace shill |