feat: opentelemetry sdk LoggerProvider #207
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2021-2022 Workiva. | ||
| // Licensed under the Apache License, Version 2.0. Please see https://github.com/Workiva/opentelemetry-dart/blob/master/LICENSE for more information | ||
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| import 'package:meta/meta.dart'; | ||
| import 'package:opentelemetry/api.dart' as api; | ||
| import 'package:opentelemetry/sdk.dart' as sdk; | ||
| import 'package:opentelemetry/src/experimental_api.dart' as api; | ||
| import 'package:opentelemetry/src/experimental_sdk.dart' as sdk; | ||
| import 'package:opentelemetry/src/sdk/common/limits.dart'; | ||
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| /// https://opentelemetry.io/docs/specs/otel/logs/sdk/#readwritelogrecord | ||
| abstract class ReadableLogRecord { | ||
| DateTime get timeStamp; | ||
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| DateTime get observedTimestamp; | ||
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| String get severityText; | ||
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| api.Severity get severityNumber; | ||
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| dynamic get body; | ||
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| sdk.Attributes get attributes; | ||
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| api.SpanContext get spanContext; | ||
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| sdk.Resource get resource; | ||
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| sdk.InstrumentationScope get instrumentationScope; | ||
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| int get droppedAttributesCount; | ||
| } | ||
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| abstract class ReadWriteLogRecord extends ReadableLogRecord { | ||
| set body(dynamic severity); | ||
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| set severityText(String severity); | ||
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| set severityNumber(api.Severity severity); | ||
| } | ||
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| class LogRecord implements ReadWriteLogRecord { | ||
| @override | ||
| final sdk.InstrumentationScope instrumentationScope; | ||
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| final sdk.Resource _resource; | ||
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| final sdk.TimeProvider _timeProvider; | ||
| final api.Context _context; | ||
| final sdk.LogRecordLimits logRecordLimits; | ||
| final DateTime? _timeStamp; | ||
| final DateTime? _observedTimestamp; | ||
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| bool _isReadonly = false; | ||
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| String _severityText; | ||
| api.Severity _severityNumber; | ||
| dynamic _body; | ||
| int _totalAttributesCount = 0; | ||
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| final sdk.Attributes _attributes; | ||
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| @protected | ||
| LogRecord({ | ||
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| required this.instrumentationScope, | ||
| required this.logRecordLimits, | ||
| api.Severity? severityNumber, | ||
| String? severityText, | ||
| List<api.Attribute> attributes = const <api.Attribute>[], | ||
| DateTime? timeStamp, | ||
| DateTime? observedTimestamp, | ||
| api.Context? context, | ||
| dynamic body, | ||
| sdk.Resource? resource, | ||
| sdk.TimeProvider? timeProvider, | ||
| }) : _severityText = severityText ?? api.Severity.unspecified.name, | ||
| _resource = resource ?? sdk.Resource([]), | ||
| _context = context ?? api.Context.current, | ||
| _body = body, | ||
| _attributes = sdk.Attributes.empty(), | ||
| _severityNumber = severityNumber ?? api.Severity.unspecified, | ||
| _timeStamp = timeStamp, | ||
| _observedTimestamp = observedTimestamp, | ||
| _timeProvider = timeProvider ?? sdk.DateTimeTimeProvider() { | ||
| if (attributes.isNotEmpty) setAttributes(attributes); | ||
| } | ||
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| @override | ||
| sdk.Resource get resource => _resource; | ||
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| @override | ||
| sdk.Attributes get attributes => _attributes; | ||
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| @override | ||
| dynamic get body => _body; | ||
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| @override | ||
| set body(dynamic body) { | ||
| if (_isReadonly) return; | ||
| _body = body; | ||
| } | ||
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| @override | ||
| api.SpanContext get spanContext => api.spanContextFromContext(_context); | ||
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| @override | ||
| int get droppedAttributesCount => _totalAttributesCount - attributes.length; | ||
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| @override | ||
| DateTime get timeStamp => _timeStamp ?? DateTime.fromMicrosecondsSinceEpoch((_timeProvider.now ~/ 1000).toInt()); | ||
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| @override | ||
| DateTime get observedTimestamp => | ||
| _observedTimestamp ?? DateTime.fromMicrosecondsSinceEpoch((_timeProvider.now ~/ 1000).toInt()); | ||
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| @override | ||
| api.Severity get severityNumber => _severityNumber; | ||
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| @override | ||
| set severityNumber(api.Severity severity) { | ||
| if (_isReadonly) return; | ||
| _severityNumber = severity; | ||
| } | ||
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| @override | ||
| String get severityText => _severityText; | ||
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| @override | ||
| set severityText(String severity) { | ||
| if (_isReadonly) return; | ||
| _severityText = severity; | ||
| } | ||
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| void setAttributes(List<api.Attribute> attributes) { | ||
| attributes.forEach(setAttribute); | ||
| } | ||
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| void setAttribute(api.Attribute attribute) { | ||
| if (_isReadonly) return; | ||
| if (attribute.key.isEmpty) return; | ||
| if (logRecordLimits.attributeCountLimit == 0) return; | ||
| _totalAttributesCount += 1; | ||
| _attributes.add(applyAttributeLimitsForLog(attribute, logRecordLimits)); | ||
| } | ||
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| /// A LogRecordProcessor may freely modify logRecord for the duration of the OnEmit call. | ||
| /// If logRecord is needed after OnEmit returns (i.e. for asynchronous processing) only reads are permitted. | ||
| @internal | ||
| void makeReadonly() { | ||
| _isReadonly = true; | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| // Copyright 2021-2022 Workiva. | ||
| // Licensed under the Apache License, Version 2.0. Please see https://github.com/Workiva/opentelemetry-dart/blob/master/LICENSE for more information | ||
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| class LogRecordLimits { | ||
| final int _attributeCountLimit; | ||
| final int _attributeValueLengthLimit; | ||
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| const LogRecordLimits({ | ||
| int attributeCountLimit = 128, | ||
| int attributeValueLengthLimit = -1, | ||
| }) : _attributeCountLimit = attributeCountLimit, | ||
| _attributeValueLengthLimit = attributeValueLengthLimit; | ||
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| int get attributeCountLimit => _attributeCountLimit; | ||
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| int get attributeValueLengthLimit => _attributeValueLengthLimit; | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| // Copyright 2021-2022 Workiva. | ||
| // Licensed under the Apache License, Version 2.0. Please see https://github.com/Workiva/opentelemetry-dart/blob/master/LICENSE for more information | ||
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| import 'package:meta/meta.dart'; | ||
| import 'package:opentelemetry/api.dart' as api; | ||
| import 'package:opentelemetry/sdk.dart' as sdk; | ||
| import 'package:opentelemetry/src/api/context/context.dart'; | ||
| import 'package:opentelemetry/src/experimental_api.dart' as api; | ||
| import 'package:opentelemetry/src/experimental_sdk.dart' as sdk; | ||
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| class Logger extends api.Logger { | ||
| final sdk.InstrumentationScope instrumentationScope; | ||
| final sdk.Resource _resource; | ||
| final sdk.LogRecordLimits logRecordLimits; | ||
| final sdk.TimeProvider timeProvider; | ||
| final List<sdk.LogRecordProcessor> processors; | ||
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| @protected | ||
| Logger({ | ||
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| required this.instrumentationScope, | ||
| required this.logRecordLimits, | ||
| required this.timeProvider, | ||
| this.processors = const <sdk.LogRecordProcessor>[], | ||
| sdk.Resource? resource, | ||
| }) : _resource = resource ?? sdk.Resource([]); | ||
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| @override | ||
| void emit({ | ||
| List<api.Attribute> attributes = const [], | ||
| Context? context, | ||
| dynamic body, | ||
| DateTime? observedTimestamp, | ||
| api.Severity? severityNumber, | ||
| String? severityText, | ||
| DateTime? timeStamp, | ||
| }) { | ||
| final log = sdk.LogRecord( | ||
| logRecordLimits: logRecordLimits, | ||
| resource: _resource, | ||
| instrumentationScope: instrumentationScope, | ||
| context: context, | ||
| severityText: severityText, | ||
| severityNumber: severityNumber, | ||
| attributes: attributes, | ||
| body: body, | ||
| timeProvider: timeProvider, | ||
| ); | ||
| for (final processor in processors) { | ||
| processor.onEmit(log); | ||
| } | ||
| log.makeReadonly(); | ||
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| } | ||
| } | ||
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