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contrib/google.golang.org/api: change gen_endpoints script to generate a json file #2009

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merged 2 commits into from
May 30, 2023
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contrib/google.golang.org/api: change gen_endpoints script to generate a json file #2009

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ac7b962
contrib/google.golang.org/api: change gen_endpoints script to generat…
rarguelloF May 29, 2023
d92356d
fix lint
rarguelloF May 29, 2023
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32 changes: 27 additions & 5 deletions contrib/google.golang.org/api/api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -13,11 +13,15 @@
// WithEndpointMetadataDisabled option.
package api // import "gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/api"

//go:generate go run ./internal/gen_endpoints -o gen_endpoints.json

import (
_ "embed"
"encoding/json"
"math"
"net/http"

"gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/api/internal"
"gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/api/internal/tree"
httptrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/net/http"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/ext"
Expand All @@ -27,15 +31,33 @@ import (
"golang.org/x/oauth2/google"
)

//go:embed gen_endpoints.json
var endpointBytes []byte

const componentName = "google.golang.org/api"

// apiEndpoints are the defined endpoints for the Google API; it is populated
// by "go generate".
var apiEndpointsTree *tree.Tree

func init() {
telemetry.LoadIntegration(componentName)
initAPIEndpointsTree()
}

// apiEndpoints are all of the defined endpoints for the Google API; it is populated
// by "go generate".
var apiEndpoints *internal.Tree
func initAPIEndpointsTree() {
var apiEndpoints []tree.Endpoint
if err := json.Unmarshal(endpointBytes, &apiEndpoints); err != nil {
log.Warn("contrib/google.golang.org/api: failed load json endpoints: %v", err)
return
}
tr, err := tree.New(apiEndpoints...)
if err != nil {
log.Warn("contrib/google.golang.org/api: failed to create endpoints tree: %v", err)
return
}
apiEndpointsTree = tr
}

// NewClient creates a new oauth http client suitable for use with the google
// APIs with all requests traced automatically.
Expand Down Expand Up @@ -76,7 +98,7 @@ func WrapRoundTripper(transport http.RoundTripper, options ...Option) http.Round
}

func setTagsWithEndpointMetadata(req *http.Request, span ddtrace.Span) {
e, ok := apiEndpoints.Get(req.URL.Hostname(), req.Method, req.URL.Path)
e, ok := apiEndpointsTree.Get(req.URL.Hostname(), req.Method, req.URL.Path)
if ok {
span.SetTag(ext.ServiceName, e.ServiceName)
span.SetTag(ext.ResourceName, e.ResourceName)
Expand Down
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