69 lines
2.3 KiB
Swift
69 lines
2.3 KiB
Swift
//
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// Copyright © 2020 osy. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Foundation
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import Logging
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struct UTMLoggingSwift: LogHandler {
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private let label: String
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public var logLevel: Logger.Level = .info
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private var prettyMetadata: String?
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public var metadata = Logger.Metadata() {
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didSet {
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self.prettyMetadata = self.prettify(self.metadata)
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}
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}
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public subscript(metadataKey metadataKey: String) -> Logger.Metadata.Value? {
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get {
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return self.metadata[metadataKey]
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}
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set {
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self.metadata[metadataKey] = newValue
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}
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}
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init(label: String) {
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self.label = label
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}
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func log(level: Logger.Level, message: Logger.Message, metadata: Logger.Metadata?, file: String, function: String, line: UInt) {
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let prettyMetadata = metadata?.isEmpty ?? true
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? self.prettyMetadata
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: self.prettify(self.metadata.merging(metadata!, uniquingKeysWith: { _, new in new }))
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let shared = UTMLogging.sharedInstance()
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shared.writeLine("\(self.timestamp()) \(level) \(self.label) :\(prettyMetadata.map { " \($0)" } ?? "") \(message)\n")
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}
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private func prettify(_ metadata: Logger.Metadata) -> String? {
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return !metadata.isEmpty ? metadata.map { "\($0)=\($1)" }.joined(separator: " ") : nil
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}
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private func timestamp() -> String {
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var buffer = [Int8](repeating: 0, count: 255)
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var timestamp = time(nil)
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let localTime = localtime(×tamp)
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strftime(&buffer, buffer.count, "%Y-%m-%dT%H:%M:%S%z", localTime)
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return buffer.withUnsafeBufferPointer {
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$0.withMemoryRebound(to: CChar.self) {
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String(cString: $0.baseAddress!)
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}
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}
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}
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}
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