diff --git a/.chloggen/debug-exporter-normal-verbosity-logs.yaml b/.chloggen/debug-exporter-normal-verbosity-logs.yaml new file mode 100644 index 00000000000..d874275a547 --- /dev/null +++ b/.chloggen/debug-exporter-normal-verbosity-logs.yaml @@ -0,0 +1,25 @@ +# Use this changelog template to create an entry for release notes. + +# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix' +change_type: enhancement + +# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver) +component: exporter/debug + +# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`). +note: In `normal` verbosity, display one line of text for each log record + +# One or more tracking issues or pull requests related to the change +issues: [7806] + +# (Optional) One or more lines of additional information to render under the primary note. +# These lines will be padded with 2 spaces and then inserted directly into the document. +# Use pipe (|) for multiline entries. +subtext: + +# Optional: The change log or logs in which this entry should be included. +# e.g. '[user]' or '[user, api]' +# Include 'user' if the change is relevant to end users. +# Include 'api' if there is a change to a library API. +# Default: '[user]' +change_logs: [] diff --git a/exporter/debugexporter/README.md b/exporter/debugexporter/README.md index 618e12b1d13..080d673848c 100644 --- a/exporter/debugexporter/README.md +++ b/exporter/debugexporter/README.md @@ -60,8 +60,22 @@ Here's an example output: ### Normal verbosity -With `verbosity: normal`, the exporter's behavior is currently the same as with `verbosity: basic`. -See above for more details. +With `verbosity: normal`, the exporter outputs about one line for each telemetry record, including its body and attributes. +The "one line per telemetry record" is not a strict rule. +For example, logs with multiline body will be output as multiple lines. + +> [!IMPORTANT] +> Currently the `normal` verbosity is only implemented for logs. +> Metrics and traces are going to be implemented in the future. +> The current behavior for metrics and traces is the same as in `basic` verbosity. + +Here's an example output: + +```console +2024-05-27T12:46:22.423+0200 info LogsExporter {"kind": "exporter", "data_type": "logs", "name": "debug", "resource logs": 1, "log records": 1} +2024-05-27T12:46:22.423+0200 info the message app=server + {"kind": "exporter", "data_type": "logs", "name": "debug"} +``` ### Detailed verbosity @@ -109,4 +123,4 @@ Attributes: ## Warnings -- Unstable Output Format: The output formats for all verbosity levels is not guaranteed and may be changed at any time without a breaking change. \ No newline at end of file +- Unstable Output Format: The output formats for all verbosity levels is not guaranteed and may be changed at any time without a breaking change. diff --git a/exporter/debugexporter/exporter.go b/exporter/debugexporter/exporter.go index 191ac562563..ab5865e41c7 100644 --- a/exporter/debugexporter/exporter.go +++ b/exporter/debugexporter/exporter.go @@ -13,6 +13,7 @@ import ( "go.uber.org/zap" "go.opentelemetry.io/collector/config/configtelemetry" + "go.opentelemetry.io/collector/exporter/debugexporter/internal/normal" "go.opentelemetry.io/collector/exporter/internal/otlptext" "go.opentelemetry.io/collector/pdata/plog" "go.opentelemetry.io/collector/pdata/pmetric" @@ -28,10 +29,16 @@ type debugExporter struct { } func newDebugExporter(logger *zap.Logger, verbosity configtelemetry.Level) *debugExporter { + var logsMarshaler plog.Marshaler + if verbosity == configtelemetry.LevelDetailed { + logsMarshaler = otlptext.NewTextLogsMarshaler() + } else { + logsMarshaler = normal.NewNormalLogsMarshaler() + } return &debugExporter{ verbosity: verbosity, logger: logger, - logsMarshaler: otlptext.NewTextLogsMarshaler(), + logsMarshaler: logsMarshaler, metricsMarshaler: otlptext.NewTextMetricsMarshaler(), tracesMarshaler: otlptext.NewTextTracesMarshaler(), } @@ -74,7 +81,8 @@ func (s *debugExporter) pushLogs(_ context.Context, ld plog.Logs) error { s.logger.Info("LogsExporter", zap.Int("resource logs", ld.ResourceLogs().Len()), zap.Int("log records", ld.LogRecordCount())) - if s.verbosity != configtelemetry.LevelDetailed { + + if s.verbosity == configtelemetry.LevelBasic { return nil } diff --git a/exporter/debugexporter/internal/normal/logs.go b/exporter/debugexporter/internal/normal/logs.go new file mode 100644 index 00000000000..9a2ff4cd808 --- /dev/null +++ b/exporter/debugexporter/internal/normal/logs.go @@ -0,0 +1,52 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package normal // import "go.opentelemetry.io/collector/exporter/debugexporter/internal/normal" + +import ( + "bytes" + "fmt" + "strings" + + "go.opentelemetry.io/collector/pdata/pcommon" + "go.opentelemetry.io/collector/pdata/plog" +) + +type normalLogsMarshaler struct{} + +// Ensure normalLogsMarshaller implements interface plog.Marshaler +var _ plog.Marshaler = normalLogsMarshaler{} + +// NewNormalLogsMarshaler returns a plog.Marshaler for normal verbosity. It writes one line of text per log record +func NewNormalLogsMarshaler() plog.Marshaler { + return normalLogsMarshaler{} +} + +func (normalLogsMarshaler) MarshalLogs(ld plog.Logs) ([]byte, error) { + var buffer bytes.Buffer + for i := 0; i < ld.ResourceLogs().Len(); i++ { + resourceLog := ld.ResourceLogs().At(i) + for j := 0; j < resourceLog.ScopeLogs().Len(); j++ { + scopeLog := resourceLog.ScopeLogs().At(j) + for k := 0; k < scopeLog.LogRecords().Len(); k++ { + logRecord := scopeLog.LogRecords().At(k) + logAttributes := writeAttributes(logRecord.Attributes()) + + logString := fmt.Sprintf("%s %s", logRecord.Body().AsString(), strings.Join(logAttributes, " ")) + buffer.WriteString(logString) + buffer.WriteString("\n") + } + } + } + return buffer.Bytes(), nil +} + +// writeAttributes returns a slice of strings in the form "attrKey=attrValue" +func writeAttributes(attributes pcommon.Map) (attributeStrings []string) { + attributes.Range(func(k string, v pcommon.Value) bool { + attribute := fmt.Sprintf("%s=%s", k, v.AsString()) + attributeStrings = append(attributeStrings, attribute) + return true + }) + return attributeStrings +} diff --git a/exporter/debugexporter/internal/normal/logs_test.go b/exporter/debugexporter/internal/normal/logs_test.go new file mode 100644 index 00000000000..8aafa49862a --- /dev/null +++ b/exporter/debugexporter/internal/normal/logs_test.go @@ -0,0 +1,118 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package normal + +import ( + "testing" + "time" + + "github.com/stretchr/testify/assert" + + "go.opentelemetry.io/collector/pdata/pcommon" + "go.opentelemetry.io/collector/pdata/plog" +) + +func TestMarshalLogs(t *testing.T) { + tests := []struct { + name string + input plog.Logs + expected string + }{ + { + name: "empty logs", + input: plog.NewLogs(), + expected: "", + }, + { + name: "one log record", + input: func() plog.Logs { + logs := plog.NewLogs() + logRecord := logs.ResourceLogs().AppendEmpty().ScopeLogs().AppendEmpty().LogRecords().AppendEmpty() + logRecord.SetTimestamp(pcommon.NewTimestampFromTime(time.Date(2024, 1, 23, 17, 54, 41, 153, time.UTC))) + logRecord.SetSeverityNumber(plog.SeverityNumberInfo) + logRecord.SetSeverityText("INFO") + logRecord.Body().SetStr("Single line log message") + logRecord.Attributes().PutStr("key1", "value1") + logRecord.Attributes().PutStr("key2", "value2") + return logs + }(), + expected: `Single line log message key1=value1 key2=value2 +`, + }, + { + name: "multiline log", + input: func() plog.Logs { + logs := plog.NewLogs() + logRecord := logs.ResourceLogs().AppendEmpty().ScopeLogs().AppendEmpty().LogRecords().AppendEmpty() + logRecord.SetTimestamp(pcommon.NewTimestampFromTime(time.Date(2024, 1, 23, 17, 54, 41, 153, time.UTC))) + logRecord.SetSeverityNumber(plog.SeverityNumberInfo) + logRecord.SetSeverityText("INFO") + logRecord.Body().SetStr("First line of the log message\n second line of the log message") + logRecord.Attributes().PutStr("key1", "value1") + logRecord.Attributes().PutStr("key2", "value2") + return logs + }(), + expected: `First line of the log message + second line of the log message key1=value1 key2=value2 +`, + }, + { + name: "two log records", + input: func() plog.Logs { + logs := plog.NewLogs() + logRecords := logs.ResourceLogs().AppendEmpty().ScopeLogs().AppendEmpty().LogRecords() + + logRecord := logRecords.AppendEmpty() + logRecord.SetTimestamp(pcommon.NewTimestampFromTime(time.Date(2024, 1, 23, 17, 54, 41, 153, time.UTC))) + logRecord.SetSeverityNumber(plog.SeverityNumberInfo) + logRecord.SetSeverityText("INFO") + logRecord.Body().SetStr("Single line log message") + logRecord.Attributes().PutStr("key1", "value1") + logRecord.Attributes().PutStr("key2", "value2") + + logRecord = logRecords.AppendEmpty() + logRecord.Body().SetStr("Multi-line\nlog message") + logRecord.Attributes().PutStr("mykey2", "myvalue2") + logRecord.Attributes().PutStr("mykey1", "myvalue1") + return logs + }(), + expected: `Single line log message key1=value1 key2=value2 +Multi-line +log message mykey2=myvalue2 mykey1=myvalue1 +`, + }, + { + name: "log with maps in body and attributes", + input: func() plog.Logs { + logs := plog.NewLogs() + logRecord := logs.ResourceLogs().AppendEmpty().ScopeLogs().AppendEmpty().LogRecords().AppendEmpty() + logRecord.SetTimestamp(pcommon.NewTimestampFromTime(time.Date(2020, 2, 11, 20, 26, 13, 789, time.UTC))) + logRecord.SetSeverityNumber(plog.SeverityNumberInfo) + logRecord.SetSeverityText("INFO") + body := logRecord.Body().SetEmptyMap() + body.PutStr("app", "CurrencyConverter") + bodyEvent := body.PutEmptyMap("event") + bodyEvent.PutStr("operation", "convert") + bodyEvent.PutStr("result", "success") + conversionAttr := logRecord.Attributes().PutEmptyMap("conversion") + conversionSourceAttr := conversionAttr.PutEmptyMap("source") + conversionSourceAttr.PutStr("currency", "USD") + conversionSourceAttr.PutDouble("amount", 34.22) + conversionDestinationAttr := conversionAttr.PutEmptyMap("destination") + conversionDestinationAttr.PutStr("currency", "EUR") + logRecord.Attributes().PutStr("service", "payments") + return logs + }(), + expected: `{"app":"CurrencyConverter","event":{"operation":"convert","result":"success"}} conversion={"destination":{"currency":"EUR"},"source":{"amount":34.22,"currency":"USD"}} service=payments +`, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + output, err := NewNormalLogsMarshaler().MarshalLogs(tt.input) + assert.NoError(t, err) + assert.Equal(t, tt.expected, string(output)) + }) + } +}