97 lines
3.1 KiB
Go
97 lines
3.1 KiB
Go
package trace
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import (
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"context"
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"fmt"
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"github.com/graph-gophers/graphql-go/errors"
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"github.com/graph-gophers/graphql-go/introspection"
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opentracing "github.com/opentracing/opentracing-go"
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"github.com/opentracing/opentracing-go/ext"
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"github.com/opentracing/opentracing-go/log"
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)
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type TraceQueryFinishFunc func([]*errors.QueryError)
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type TraceFieldFinishFunc func(*errors.QueryError)
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type Tracer interface {
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TraceQuery(ctx context.Context, queryString string, operationName string, variables map[string]interface{}, varTypes map[string]*introspection.Type) (context.Context, TraceQueryFinishFunc)
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TraceField(ctx context.Context, label, typeName, fieldName string, trivial bool, args map[string]interface{}) (context.Context, TraceFieldFinishFunc)
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}
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type OpenTracingTracer struct{}
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func (OpenTracingTracer) TraceQuery(ctx context.Context, queryString string, operationName string, variables map[string]interface{}, varTypes map[string]*introspection.Type) (context.Context, TraceQueryFinishFunc) {
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span, spanCtx := opentracing.StartSpanFromContext(ctx, "GraphQL request")
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span.SetTag("graphql.query", queryString)
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if operationName != "" {
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span.SetTag("graphql.operationName", operationName)
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}
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if len(variables) != 0 {
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span.LogFields(log.Object("graphql.variables", variables))
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}
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return spanCtx, func(errs []*errors.QueryError) {
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if len(errs) > 0 {
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msg := errs[0].Error()
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if len(errs) > 1 {
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msg += fmt.Sprintf(" (and %d more errors)", len(errs)-1)
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}
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ext.Error.Set(span, true)
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span.SetTag("graphql.error", msg)
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}
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span.Finish()
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}
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}
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func (OpenTracingTracer) TraceField(ctx context.Context, label, typeName, fieldName string, trivial bool, args map[string]interface{}) (context.Context, TraceFieldFinishFunc) {
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if trivial {
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return ctx, noop
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}
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span, spanCtx := opentracing.StartSpanFromContext(ctx, label)
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span.SetTag("graphql.type", typeName)
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span.SetTag("graphql.field", fieldName)
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for name, value := range args {
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span.SetTag("graphql.args."+name, value)
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}
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return spanCtx, func(err *errors.QueryError) {
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if err != nil {
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ext.Error.Set(span, true)
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span.SetTag("graphql.error", err.Error())
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}
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span.Finish()
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}
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}
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func (OpenTracingTracer) TraceValidation(ctx context.Context) TraceValidationFinishFunc {
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span, _ := opentracing.StartSpanFromContext(ctx, "Validate Query")
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return func(errs []*errors.QueryError) {
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if len(errs) > 0 {
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msg := errs[0].Error()
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if len(errs) > 1 {
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msg += fmt.Sprintf(" (and %d more errors)", len(errs)-1)
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}
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ext.Error.Set(span, true)
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span.SetTag("graphql.error", msg)
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}
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span.Finish()
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}
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}
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func noop(*errors.QueryError) {}
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type NoopTracer struct{}
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func (NoopTracer) TraceQuery(ctx context.Context, queryString string, operationName string, variables map[string]interface{}, varTypes map[string]*introspection.Type) (context.Context, TraceQueryFinishFunc) {
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return ctx, func(errs []*errors.QueryError) {}
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}
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func (NoopTracer) TraceField(ctx context.Context, label, typeName, fieldName string, trivial bool, args map[string]interface{}) (context.Context, TraceFieldFinishFunc) {
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return ctx, func(err *errors.QueryError) {}
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}
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