feat: add logging support

go.mod

@@ -33,5 +33,4 @@ require (
 	golang.org/x/crypto v0.31.0 // indirect
 	golang.org/x/sys v0.28.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20241118233622-e639e219e697 // indirect
 )

go.sum

@@ -51,8 +51,8 @@ golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
 golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
 golang.org/x/time v0.8.0 h1:9i3RxcPv3PZnitoVGMPDKZSq1xW1gK1Xy3ArNOGZfEg=
 golang.org/x/time v0.8.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM=
-google.golang.org/genproto/googleapis/api v0.0.0-20241118233622-e639e219e697 h1:pgr/4QbFyktUv9CtQ/Fq4gzEE6/Xs7iCXbktaGzLHbQ=
-google.golang.org/genproto/googleapis/api v0.0.0-20241118233622-e639e219e697/go.mod h1:+D9ySVjN8nY8YCVjc5O7PZDIdZporIDY3KaGfJunh88=
+google.golang.org/genproto/googleapis/api v0.0.0-20241104194629-dd2ea8efbc28 h1:M0KvPgPmDZHPlbRbaNU1APr28TvwvvdUPlSv7PUvy8g=
+google.golang.org/genproto/googleapis/api v0.0.0-20241104194629-dd2ea8efbc28/go.mod h1:dguCy7UOdZhTvLzDyt15+rOrawrpM4q7DD9dQ1P11P4=
 google.golang.org/genproto/googleapis/bytestream v0.0.0-20241206012308-a4fef0638583 h1:QNxhiucJGWLF/fFpnyTIk8GdEGTa6tUC7/JYG7VN3XU=
 google.golang.org/genproto/googleapis/bytestream v0.0.0-20241206012308-a4fef0638583/go.mod h1:qUsLYwbwz5ostUWtuFuXPlHmSJodC5NI/88ZlHj4M1o=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20241206012308-a4fef0638583 h1:IfdSdTcLFy4lqUQrQJLkLt1PB+AsqVz6lwkWPzWEz10=

go.work.sum

@@ -674,6 +674,8 @@ github.com/google/uuid v1.5.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/googleapis/enterprise-certificate-proxy v0.2.3/go.mod h1:AwSRAtLfXpU5Nm3pW+v7rGDHp09LsPtGY9MduiEsR9k=
 github.com/googleapis/gax-go/v2 v2.8.0/go.mod h1:4orTrqY6hXxxaUL4LHIPl6lGo8vAE38/qKbhSAKP6QI=
 github.com/googleapis/gax-go/v2 v2.12.0/go.mod h1:y+aIqrI5eb1YGMVJfuV3185Ts/D7qKpsEkdD5+I6QGU=
+github.com/googleapis/gax-go/v2 v2.14.0 h1:f+jMrjBPl+DL9nI4IQzLUxMq7XrAqFYB7hBPqMNIe8o=
+github.com/googleapis/gax-go/v2 v2.14.0/go.mod h1:lhBCnjdLrWRaPvLWhmc8IS24m9mr07qSYnHncrgo+zk=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
@@ -704,6 +706,7 @@ go.opentelemetry.io/otel/trace v1.22.0/go.mod h1:RbbHXVqKES9QhzZq/fE5UnOSILqRt40
 go.opentelemetry.io/proto/otlp v0.7.0/go.mod h1:PqfVotwruBrMGOCsRd/89rSnXhoiJIqeYNgFYFoEGnI=
 golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
 golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg=
+golang.org/x/crypto v0.30.0/go.mod h1:kDsLvtWBEx7MV9tJOj9bnXsPbxwJQ6csT/x4KIN4Ssk=
 golang.org/x/mod v0.13.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=

google-api-go-generator/gen.go

@@ -809,6 +809,7 @@ func (a *API) GenerateCode() ([]byte, error) {
 		"errors",
 		"fmt",
 		"io",
+		"log/slog",
 		"net/http",
 		"net/url",
 		"strconv",
@@ -820,6 +821,7 @@ func (a *API) GenerateCode() ([]byte, error) {
 	if a.Name == "storage" {
 		pn("  %q", "github.com/googleapis/gax-go/v2")
 	}
+	pn("  %q", "github.com/googleapis/gax-go/v2/internallog")
 	for _, imp := range []struct {
 		pkg   string
 		lname string
@@ -895,7 +897,10 @@ func (a *API) GenerateCode() ([]byte, error) {
 
 	pn("client, endpoint, err := htransport.NewClient(ctx, opts...)")
 	pn("if err != nil { return nil, err }")
-	pn("s, err := New(client)")
+	pn("s := &%s{client: client, BasePath: basePath, logger: internaloption.GetLogger(opts)}", service)
+	for _, res := range a.doc.Resources { // add top level resources.
+		pn("s.%s = New%s(s)", resourceGoField(res, nil), resourceGoType(res))
+	}
 	pn("if err != nil { return nil, err }")
 	pn(`if endpoint != "" { s.BasePath = endpoint }`)
 	pn("return s, nil")
@@ -908,15 +913,12 @@ func (a *API) GenerateCode() ([]byte, error) {
 	pn("// If you are using google.golang.org/api/googleapis/transport.APIKey, use option.WithAPIKey with NewService instead.")
 	pn("func New(client *http.Client) (*%s, error) {", service)
 	pn("if client == nil { return nil, errors.New(\"client is nil\") }")
-	pn("s := &%s{client: client, BasePath: basePath}", service)
-	for _, res := range a.doc.Resources { // add top level resources.
-		pn("s.%s = New%s(s)", resourceGoField(res, nil), resourceGoType(res))
-	}
-	pn("return s, nil")
+	pn("return NewService(option.WithHTTPClient(client))")
 	pn("}")
 
 	pn("\ntype %s struct {", service)
 	pn(" client *http.Client")
+	pn(" logger *slog.Logger")
 	pn(" BasePath string // API endpoint base URL")
 	pn(" UserAgent string // optional additional User-Agent fragment")
 
@@ -995,6 +997,7 @@ func splitFileHeading(w io.Writer, pkg string) {
 		"context",
 		"fmt",
 		"io",
+		"log/slog",
 		"net/http",
 	} {
 		pn("  %q", imp)
@@ -2280,26 +2283,32 @@ func (meth *Method) generateCode() {
 		pn("}")
 	}
 	pn("var body io.Reader = nil")
+	var hasBody bool
 	if meth.IsRawRequest() {
-		pn("body = c.body_")
+		pn("body := bytes.NewBuffer(nil)")
+		pn("_, err := body.ReadFrom(c.body_)")
+		pn("if err != nil { return nil, err }")
+		hasBody = true
 	} else if meth.IsProtoStructRequest() {
 		pn("protoBytes, err := json.Marshal(c.req)")
 		pn("if err != nil { return nil, err }")
-		pn("body = bytes.NewReader(protoBytes)")
+		pn("body := bytes.NewReader(protoBytes)")
+		hasBody = true
 	} else {
 		if ba := args.bodyArg(); ba != nil && httpMethod != "GET" {
 			if meth.m.ID == "ml.projects.predict" {
 				// TODO(cbro): move ML API to rawHTTP (it will be a breaking change)
-				// Skip JSONReader for APIs that require clients to pass in JSON already.
-				pn("body = strings.NewReader(c.%s.HttpBody.Data)", ba.goname)
+				// Skip JSONBuffer for APIs that require clients to pass in JSON already.
+				pn("body := bytes.NewBufferString(c.%s.HttpBody.Data)", ba.goname)
 			} else {
 				style := "WithoutDataWrapper"
 				if a.needsDataWrapper() {
 					style = "WithDataWrapper"
 				}
-				pn("body, err := googleapi.%s.JSONReader(c.%s)", style, ba.goname)
+				pn("body, err := googleapi.%s.JSONBuffer(c.%s)", style, ba.goname)
 				pn("if err != nil { return nil, err }")
 			}
+			hasBody = true
 		}
 		pn(`c.urlParams_.Set("alt", alt)`)
 		pn(`c.urlParams_.Set("prettyPrint", "false")`)
@@ -2337,12 +2346,18 @@ func (meth *Method) generateCode() {
 		}
 		pn(`})`)
 	}
+	logBody := "nil"
+	if hasBody {
+		logBody = "body.Bytes()"
+	}
 	if meth.supportsMediaUpload() && meth.api.Name == "storage" {
+		pn(`c.s.logger.DebugContext(c.ctx_, "api request", "serviceName", apiName, "rpcName", %q, "request", internallog.HTTPRequest(req, %s))`, meth.Id(), logBody)
 		pn("if c.retry != nil {")
 		pn("	return gensupport.SendRequestWithRetry(c.ctx_, c.s.client, req, c.retry)")
 		pn("}")
 		pn("return gensupport.SendRequest(c.ctx_, c.s.client, req)")
 	} else {
+		pn(`c.s.logger.DebugContext(c.ctx_, "api request", "serviceName", apiName, "rpcName", %q, "request", internallog.HTTPRequest(req, %s))`, meth.Id(), logBody)
 		pn("return gensupport.SendRequest(c.ctx_, c.s.client, req)")
 	}
 	pn("}")
@@ -2421,6 +2436,7 @@ func (meth *Method) generateCode() {
 			pn("}")
 		}
 		if retTypeComma == "" {
+			pn(`c.s.logger.DebugContext(c.ctx_, "api response", "serviceName", apiName, "rpcName", %q, "response", internallog.HTTPResponse(res, nil))`, meth.Id())
 			pn("return nil")
 		} else {
 			if meth.IsProtoStructResponse() {
@@ -2449,8 +2465,11 @@ func (meth *Method) generateCode() {
 				pn("if err := res.Body.Close(); err != nil { return nil, err }")
 				pn("if err := json.NewDecoder(bytes.NewReader(b.Bytes())).Decode(target); err != nil { return nil, err }")
 				pn("ret.Data = b.String()")
+				pn(`c.s.logger.DebugContext(c.ctx_, "api response", "serviceName", apiName, "rpcName", %q, "response", internallog.HTTPResponse(res, b.Bytes()))`, meth.Id())
 			} else {
-				pn("if err := gensupport.DecodeResponse(target, res); err != nil { return nil, err }")
+				pn("b, err := gensupport.DecodeResponseBytes(target, res)")
+				pn("if err != nil { return nil, err }")
+				pn(`c.s.logger.DebugContext(c.ctx_, "api response", "serviceName", apiName, "rpcName", %q, "response", internallog.HTTPResponse(res, b))`, meth.Id())
 			}
 			pn("return ret, nil")
 		}