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reader.go
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/
reader.go
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package store
import (
"context"
"errors"
"fmt"
"time"
"github.com/nicolastakashi/jaeger-redisearch/internal/metrics"
"github.com/nicolastakashi/jaeger-redisearch/internal/model"
"github.com/nicolastakashi/jaeger-redisearch/internal/redis"
"github.com/nicolastakashi/jaeger-redisearch/internal/repository"
"github.com/hashicorp/go-hclog"
jModel "github.com/jaegertracing/jaeger/model"
"github.com/jaegertracing/jaeger/storage/spanstore"
)
type SpanReader struct {
logger hclog.Logger
spanRepository *repository.SpanRepository
serviceRepository *repository.OperationRepository
}
func NewSpanReader(logger hclog.Logger, spanRepository *repository.SpanRepository, serviceRepository *repository.OperationRepository) *SpanReader {
return &SpanReader{
logger: logger,
spanRepository: spanRepository,
serviceRepository: serviceRepository,
}
}
func (s *SpanReader) GetServices(ctx context.Context) ([]string, error) {
defer metrics.ReadsTotal.WithLabelValues("services", "get_services")
start := time.Now()
services, err := s.serviceRepository.GetServices(ctx)
if err != nil {
metrics.ReadLatency.WithLabelValues("services", "Error", "get_services").Observe(time.Since(start).Seconds())
return nil, fmt.Errorf("error to get services: %s", err)
}
metrics.ReadLatency.WithLabelValues("services", "Ok", "get_services").Observe(time.Since(start).Seconds())
return services, nil
}
func (s *SpanReader) GetTrace(ctx context.Context, traceID jModel.TraceID) (*jModel.Trace, error) {
defer metrics.ReadsTotal.WithLabelValues("spans", "get_trace")
start := time.Now()
tracesMap, err := s.spanRepository.GetTracesById(ctx, []string{traceID.String()})
if err != nil {
metrics.ReadLatency.WithLabelValues("spans", "Error", "get_trace").Observe(time.Since(start).Seconds())
return nil, fmt.Errorf("error to get traces by id: %s", err)
}
for _, trace := range tracesMap {
metrics.ReadLatency.WithLabelValues("spans", "Ok", "get_trace").Observe(time.Since(start).Seconds())
return trace, nil
}
metrics.ReadLatency.WithLabelValues("spans", "Error", "get_trace").Observe(time.Since(start).Seconds())
return nil, errors.New("trace not found")
}
func (s *SpanReader) GetOperations(ctx context.Context, query spanstore.OperationQueryParameters) ([]spanstore.Operation, error) {
defer metrics.ReadsTotal.WithLabelValues("services", "get_operations")
start := time.Now()
operations, err := s.serviceRepository.GetOperationsByService(ctx, query.ServiceName)
if err != nil {
metrics.ReadLatency.WithLabelValues("services", "Error", "get_operations").Observe(time.Since(start).Seconds())
return nil, fmt.Errorf("error to get services: %s", err)
}
array := make([]spanstore.Operation, len(operations))
for i, operation := range operations {
array[i] = spanstore.Operation{
Name: redis.UnTokenization(operation.OperationName),
SpanKind: operation.SpanKind,
}
}
metrics.ReadLatency.WithLabelValues("services", "Ok", "get_operations").Observe(time.Since(start).Seconds())
return array, nil
}
func (s *SpanReader) FindTraces(ctx context.Context, query *spanstore.TraceQueryParameters) ([]*jModel.Trace, error) {
defer metrics.ReadsTotal.WithLabelValues("spans", "find_traces")
start := time.Now()
traceIds, err := s.spanRepository.GetTracesId(ctx, model.TraceQueryParameters{
ServiceName: query.ServiceName,
OperationName: query.OperationName,
Tags: query.Tags,
StartTimeMin: query.StartTimeMin,
StartTimeMax: query.StartTimeMax,
DurationMin: query.DurationMin,
DurationMax: query.DurationMax,
NumTraces: int64(query.NumTraces),
})
if len(traceIds) == 0 {
metrics.ReadLatency.WithLabelValues("spans", "Error", "find_traces").Observe(time.Since(start).Seconds())
return nil, nil
}
if err != nil {
metrics.ReadLatency.WithLabelValues("spans", "Ok", "find_traces").Observe(time.Since(start).Seconds())
return nil, fmt.Errorf("error to get traces id: %s", err)
}
tracesMap, err := s.spanRepository.GetTracesById(ctx, traceIds)
if err != nil {
metrics.ReadLatency.WithLabelValues("spans", "Error", "find_traces").Observe(time.Since(start).Seconds())
return nil, fmt.Errorf("error to get traces by id: %s", err)
}
var traces []*jModel.Trace
for _, trace := range tracesMap {
traces = append(traces, trace)
}
metrics.ReadLatency.WithLabelValues("spans", "Ok", "find_traces").Observe(time.Since(start).Seconds())
return traces, nil
}
func (s *SpanReader) FindTraceIDs(ctx context.Context, query *spanstore.TraceQueryParameters) ([]jModel.TraceID, error) {
defer metrics.ReadsTotal.WithLabelValues("spans", "find_trace_ids")
start := time.Now()
traceIds, err := s.spanRepository.GetTracesId(ctx, model.TraceQueryParameters{
ServiceName: query.ServiceName,
OperationName: query.OperationName,
Tags: query.Tags,
StartTimeMin: query.StartTimeMin,
StartTimeMax: query.StartTimeMax,
DurationMin: query.DurationMin,
DurationMax: query.DurationMax,
NumTraces: int64(query.NumTraces),
})
if len(traceIds) == 0 {
metrics.ReadLatency.WithLabelValues("spans", "Ok", "find_trace_ids").Observe(time.Since(start).Seconds())
return nil, nil
}
if err != nil {
metrics.ReadLatency.WithLabelValues("spans", "Error", "find_trace_ids").Observe(time.Since(start).Seconds())
return nil, fmt.Errorf("error to get traces id: %s", err)
}
traceIDs := make([]jModel.TraceID, len(traceIds))
for i, id := range traceIds {
t, err := jModel.TraceIDFromString(id)
if err != nil {
return nil, err
}
traceIDs[i] = t
}
metrics.ReadLatency.WithLabelValues("spans", "Ok", "find_trace_ids").Observe(time.Since(start).Seconds())
return traceIDs, nil
}
func (s *SpanReader) GetDependencies(ctx context.Context, endTs time.Time, lookback time.Duration) ([]jModel.DependencyLink, error) {
return []jModel.DependencyLink{}, nil
}