github.com/erda-project/erda-infra@v1.0.9/pkg/trace/inject/redis/process.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package redis
    16  
    17  import (
    18  	"github.com/go-redis/redis"
    19  	"go.opentelemetry.io/otel/codes"
    20  	"go.opentelemetry.io/otel/trace"
    21  
    22  	injectcontext "github.com/erda-project/erda-infra/pkg/trace/inject/context"
    23  )
    24  
    25  func newProcessWrapper(cfg *config) func(oldProcess func(cmd redis.Cmder) error) func(cmd redis.Cmder) error {
    26  	return func(process func(cmd redis.Cmder) error) func(cmd redis.Cmder) error {
    27  		return func(cmd redis.Cmder) (err error) {
    28  			ctx := injectcontext.GetContext()
    29  			if ctx != nil {
    30  				record := cfg.SpanOptions.AllowRoot || trace.SpanContextFromContext(ctx).IsValid()
    31  				if record && !cfg.SpanOptions.Ping && cmd.Name() == "ping" {
    32  					record = false
    33  				}
    34  				if record {
    35  					var span trace.Span
    36  					ctx, span = cfg.Tracer.Start(ctx, cfg.SpanNameFormatter.Format(ctx, cmd),
    37  						trace.WithSpanKind(trace.SpanKindClient),
    38  						trace.WithAttributes(withDBStatement(cfg, cmd)...),
    39  					)
    40  					defer func() {
    41  						if err != nil {
    42  							recordSpanError(span, cfg.SpanOptions, err)
    43  						} else {
    44  							span.SetStatus(codes.Ok, "")
    45  						}
    46  						span.End()
    47  					}()
    48  				}
    49  			}
    50  			err = process(cmd)
    51  			return err
    52  		}
    53  	}
    54  }
    55  
    56  func newProcessPipeline(cfg *config) func(process func([]redis.Cmder) error) func([]redis.Cmder) error {
    57  	return func(process func(cmds []redis.Cmder) error) func([]redis.Cmder) error {
    58  		return func(cmds []redis.Cmder) (err error) {
    59  			ctx := injectcontext.GetContext()
    60  			if ctx != nil {
    61  				if cfg.SpanOptions.AllowRoot || trace.SpanContextFromContext(ctx).IsValid() {
    62  					var span trace.Span
    63  					ctx, span = cfg.Tracer.Start(ctx, cfg.SpanNameFormatter.FormatBatch(ctx, cmds),
    64  						trace.WithSpanKind(trace.SpanKindClient),
    65  						trace.WithAttributes(withBatchDBStatement(cfg, cmds)...),
    66  					)
    67  					defer func() {
    68  						if err != nil {
    69  							recordSpanError(span, cfg.SpanOptions, err)
    70  						} else {
    71  							span.SetStatus(codes.Ok, "")
    72  						}
    73  						span.End()
    74  					}()
    75  				}
    76  			}
    77  			err = process(cmds)
    78  			return err
    79  		}
    80  	}
    81  }
    82  
    83  func recordSpanError(span trace.Span, opts SpanOptions, err error) {
    84  	if span == nil {
    85  		return
    86  	}
    87  	if opts.RecordError != nil && !opts.RecordError(err) {
    88  		return
    89  	}
    90  	switch err {
    91  	case nil:
    92  		return
    93  	default:
    94  		span.RecordError(err)
    95  		span.SetStatus(codes.Error, "")
    96  	}
    97  }