// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Code generated by protoc-gen-go_gapic. DO NOT EDIT.

package compute

import (
	"bytes"
	"context"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"

	gax "github.com/googleapis/gax-go/v2"
	"google.golang.org/api/option"
	"google.golang.org/api/option/internaloption"
	httptransport "google.golang.org/api/transport/http"
	computepb "google.golang.org/genproto/googleapis/cloud/compute/v1"
	"google.golang.org/grpc"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/encoding/protojson"
)

var newRoutersClientHook clientHook

// RoutersCallOptions contains the retry settings for each method of RoutersClient.
type RoutersCallOptions struct {
	AggregatedList    []gax.CallOption
	Delete            []gax.CallOption
	Get               []gax.CallOption
	GetNatMappingInfo []gax.CallOption
	GetRouterStatus   []gax.CallOption
	Insert            []gax.CallOption
	List              []gax.CallOption
	Patch             []gax.CallOption
	Preview           []gax.CallOption
	Update            []gax.CallOption
}

// internalRoutersClient is an interface that defines the methods availaible from Google Compute Engine API.
type internalRoutersClient interface {
	Close() error
	setGoogleClientInfo(...string)
	Connection() *grpc.ClientConn
	AggregatedList(context.Context, *computepb.AggregatedListRoutersRequest, ...gax.CallOption) (*computepb.RouterAggregatedList, error)
	Delete(context.Context, *computepb.DeleteRouterRequest, ...gax.CallOption) (*computepb.Operation, error)
	Get(context.Context, *computepb.GetRouterRequest, ...gax.CallOption) (*computepb.Router, error)
	GetNatMappingInfo(context.Context, *computepb.GetNatMappingInfoRoutersRequest, ...gax.CallOption) (*computepb.VmEndpointNatMappingsList, error)
	GetRouterStatus(context.Context, *computepb.GetRouterStatusRouterRequest, ...gax.CallOption) (*computepb.RouterStatusResponse, error)
	Insert(context.Context, *computepb.InsertRouterRequest, ...gax.CallOption) (*computepb.Operation, error)
	List(context.Context, *computepb.ListRoutersRequest, ...gax.CallOption) (*computepb.RouterList, error)
	Patch(context.Context, *computepb.PatchRouterRequest, ...gax.CallOption) (*computepb.Operation, error)
	Preview(context.Context, *computepb.PreviewRouterRequest, ...gax.CallOption) (*computepb.RoutersPreviewResponse, error)
	Update(context.Context, *computepb.UpdateRouterRequest, ...gax.CallOption) (*computepb.Operation, error)
}

// RoutersClient is a client for interacting with Google Compute Engine API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// The Routers API.
type RoutersClient struct {
	// The internal transport-dependent client.
	internalClient internalRoutersClient

	// The call options for this service.
	CallOptions *RoutersCallOptions
}

// Wrapper methods routed to the internal client.

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *RoutersClient) Close() error {
	return c.internalClient.Close()
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *RoutersClient) setGoogleClientInfo(keyval ...string) {
	c.internalClient.setGoogleClientInfo(keyval...)
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *RoutersClient) Connection() *grpc.ClientConn {
	return c.internalClient.Connection()
}

// AggregatedList retrieves an aggregated list of routers.
func (c *RoutersClient) AggregatedList(ctx context.Context, req *computepb.AggregatedListRoutersRequest, opts ...gax.CallOption) (*computepb.RouterAggregatedList, error) {
	return c.internalClient.AggregatedList(ctx, req, opts...)
}

// Delete deletes the specified Router resource.
func (c *RoutersClient) Delete(ctx context.Context, req *computepb.DeleteRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	return c.internalClient.Delete(ctx, req, opts...)
}

// Get returns the specified Router resource. Gets a list of available routers by making a list() request.
func (c *RoutersClient) Get(ctx context.Context, req *computepb.GetRouterRequest, opts ...gax.CallOption) (*computepb.Router, error) {
	return c.internalClient.Get(ctx, req, opts...)
}

// GetNatMappingInfo retrieves runtime Nat mapping information of VM endpoints.
func (c *RoutersClient) GetNatMappingInfo(ctx context.Context, req *computepb.GetNatMappingInfoRoutersRequest, opts ...gax.CallOption) (*computepb.VmEndpointNatMappingsList, error) {
	return c.internalClient.GetNatMappingInfo(ctx, req, opts...)
}

// GetRouterStatus retrieves runtime information of the specified router.
func (c *RoutersClient) GetRouterStatus(ctx context.Context, req *computepb.GetRouterStatusRouterRequest, opts ...gax.CallOption) (*computepb.RouterStatusResponse, error) {
	return c.internalClient.GetRouterStatus(ctx, req, opts...)
}

// Insert creates a Router resource in the specified project and region using the data included in the request.
func (c *RoutersClient) Insert(ctx context.Context, req *computepb.InsertRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	return c.internalClient.Insert(ctx, req, opts...)
}

// List retrieves a list of Router resources available to the specified project.
func (c *RoutersClient) List(ctx context.Context, req *computepb.ListRoutersRequest, opts ...gax.CallOption) (*computepb.RouterList, error) {
	return c.internalClient.List(ctx, req, opts...)
}

// Patch patches the specified Router resource with the data included in the request. This method supports PATCH semantics and uses JSON merge patch format and processing rules.
func (c *RoutersClient) Patch(ctx context.Context, req *computepb.PatchRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	return c.internalClient.Patch(ctx, req, opts...)
}

// Preview preview fields auto-generated during router create and update operations. Calling this method does NOT create or update the router.
func (c *RoutersClient) Preview(ctx context.Context, req *computepb.PreviewRouterRequest, opts ...gax.CallOption) (*computepb.RoutersPreviewResponse, error) {
	return c.internalClient.Preview(ctx, req, opts...)
}

// Update updates the specified Router resource with the data included in the request. This method conforms to PUT semantics, which requests that the state of the target resource be created or replaced with the state defined by the representation enclosed in the request message payload.
func (c *RoutersClient) Update(ctx context.Context, req *computepb.UpdateRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	return c.internalClient.Update(ctx, req, opts...)
}

// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type routersRESTClient struct {
	// The http endpoint to connect to.
	endpoint string

	// The http client.
	httpClient *http.Client

	// The x-goog-* metadata to be sent with each request.
	xGoogMetadata metadata.MD
}

// NewRoutersRESTClient creates a new routers rest client.
//
// The Routers API.
func NewRoutersRESTClient(ctx context.Context, opts ...option.ClientOption) (*RoutersClient, error) {
	clientOpts := append(defaultRoutersRESTClientOptions(), opts...)
	httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...)
	if err != nil {
		return nil, err
	}

	c := &routersRESTClient{
		endpoint:   endpoint,
		httpClient: httpClient,
	}
	c.setGoogleClientInfo()

	return &RoutersClient{internalClient: c, CallOptions: &RoutersCallOptions{}}, nil
}

func defaultRoutersRESTClientOptions() []option.ClientOption {
	return []option.ClientOption{
		internaloption.WithDefaultEndpoint("compute.googleapis.com"),
		internaloption.WithDefaultMTLSEndpoint("compute.mtls.googleapis.com"),
		internaloption.WithDefaultAudience("https://compute.googleapis.com/"),
		internaloption.WithDefaultScopes(DefaultAuthScopes()...),
	}
}

// setGoogleClientInfo sets the name and version of the application in
// the `x-goog-api-client` header passed on each request. Intended for
// use by Google-written clients.
func (c *routersRESTClient) setGoogleClientInfo(keyval ...string) {
	kv := append([]string{"gl-go", versionGo()}, keyval...)
	kv = append(kv, "gapic", versionClient, "gax", gax.Version, "rest", "UNKNOWN")
	c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...))
}

// Close closes the connection to the API service. The user should invoke this when
// the client is no longer required.
func (c *routersRESTClient) Close() error {
	// Replace httpClient with nil to force cleanup.
	c.httpClient = nil
	return nil
}

// Connection returns a connection to the API service.
//
// Deprecated.
func (c *routersRESTClient) Connection() *grpc.ClientConn {
	return nil
}

// AggregatedList retrieves an aggregated list of routers.
func (c *routersRESTClient) AggregatedList(ctx context.Context, req *computepb.AggregatedListRoutersRequest, opts ...gax.CallOption) (*computepb.RouterAggregatedList, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/aggregated/routers", req.GetProject())

	params := url.Values{}
	if req != nil && req.Filter != nil {
		params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
	}
	if req != nil && req.IncludeAllScopes != nil {
		params.Add("includeAllScopes", fmt.Sprintf("%v", req.GetIncludeAllScopes()))
	}
	if req != nil && req.MaxResults != nil {
		params.Add("maxResults", fmt.Sprintf("%v", req.GetMaxResults()))
	}
	if req != nil && req.OrderBy != nil {
		params.Add("orderBy", fmt.Sprintf("%v", req.GetOrderBy()))
	}
	if req != nil && req.PageToken != nil {
		params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
	}
	if req != nil && req.ReturnPartialSuccess != nil {
		params.Add("returnPartialSuccess", fmt.Sprintf("%v", req.GetReturnPartialSuccess()))
	}

	baseUrl.RawQuery = params.Encode()

	httpReq, err := http.NewRequest("GET", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.RouterAggregatedList{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// Delete deletes the specified Router resource.
func (c *routersRESTClient) Delete(ctx context.Context, req *computepb.DeleteRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers/%v", req.GetProject(), req.GetRegion(), req.GetRouter())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	httpReq, err := http.NewRequest("DELETE", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.Operation{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// Get returns the specified Router resource. Gets a list of available routers by making a list() request.
func (c *routersRESTClient) Get(ctx context.Context, req *computepb.GetRouterRequest, opts ...gax.CallOption) (*computepb.Router, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers/%v", req.GetProject(), req.GetRegion(), req.GetRouter())

	httpReq, err := http.NewRequest("GET", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.Router{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// GetNatMappingInfo retrieves runtime Nat mapping information of VM endpoints.
func (c *routersRESTClient) GetNatMappingInfo(ctx context.Context, req *computepb.GetNatMappingInfoRoutersRequest, opts ...gax.CallOption) (*computepb.VmEndpointNatMappingsList, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers/%v/getNatMappingInfo", req.GetProject(), req.GetRegion(), req.GetRouter())

	params := url.Values{}
	if req != nil && req.Filter != nil {
		params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
	}
	if req != nil && req.MaxResults != nil {
		params.Add("maxResults", fmt.Sprintf("%v", req.GetMaxResults()))
	}
	if req != nil && req.OrderBy != nil {
		params.Add("orderBy", fmt.Sprintf("%v", req.GetOrderBy()))
	}
	if req != nil && req.PageToken != nil {
		params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
	}
	if req != nil && req.ReturnPartialSuccess != nil {
		params.Add("returnPartialSuccess", fmt.Sprintf("%v", req.GetReturnPartialSuccess()))
	}

	baseUrl.RawQuery = params.Encode()

	httpReq, err := http.NewRequest("GET", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.VmEndpointNatMappingsList{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// GetRouterStatus retrieves runtime information of the specified router.
func (c *routersRESTClient) GetRouterStatus(ctx context.Context, req *computepb.GetRouterStatusRouterRequest, opts ...gax.CallOption) (*computepb.RouterStatusResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers/%v/getRouterStatus", req.GetProject(), req.GetRegion(), req.GetRouter())

	httpReq, err := http.NewRequest("GET", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.RouterStatusResponse{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// Insert creates a Router resource in the specified project and region using the data included in the request.
func (c *routersRESTClient) Insert(ctx context.Context, req *computepb.InsertRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	body := req.GetRouterResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers", req.GetProject(), req.GetRegion())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.Operation{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// List retrieves a list of Router resources available to the specified project.
func (c *routersRESTClient) List(ctx context.Context, req *computepb.ListRoutersRequest, opts ...gax.CallOption) (*computepb.RouterList, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	jsonReq, err := m.Marshal(req)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers", req.GetProject(), req.GetRegion())

	params := url.Values{}
	if req != nil && req.Filter != nil {
		params.Add("filter", fmt.Sprintf("%v", req.GetFilter()))
	}
	if req != nil && req.MaxResults != nil {
		params.Add("maxResults", fmt.Sprintf("%v", req.GetMaxResults()))
	}
	if req != nil && req.OrderBy != nil {
		params.Add("orderBy", fmt.Sprintf("%v", req.GetOrderBy()))
	}
	if req != nil && req.PageToken != nil {
		params.Add("pageToken", fmt.Sprintf("%v", req.GetPageToken()))
	}
	if req != nil && req.ReturnPartialSuccess != nil {
		params.Add("returnPartialSuccess", fmt.Sprintf("%v", req.GetReturnPartialSuccess()))
	}

	baseUrl.RawQuery = params.Encode()

	httpReq, err := http.NewRequest("GET", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.RouterList{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// Patch patches the specified Router resource with the data included in the request. This method supports PATCH semantics and uses JSON merge patch format and processing rules.
func (c *routersRESTClient) Patch(ctx context.Context, req *computepb.PatchRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	body := req.GetRouterResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers/%v", req.GetProject(), req.GetRegion(), req.GetRouter())

	params := url.Values{}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}

	baseUrl.RawQuery = params.Encode()

	httpReq, err := http.NewRequest("PATCH", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.Operation{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// Preview preview fields auto-generated during router create and update operations. Calling this method does NOT create or update the router.
func (c *routersRESTClient) Preview(ctx context.Context, req *computepb.PreviewRouterRequest, opts ...gax.CallOption) (*computepb.RoutersPreviewResponse, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	body := req.GetRouterResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("/compute/v1/projects/%v/regions/%v/routers/%v/preview", req.GetProject(), req.GetRegion(), req.GetRouter())

	httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.RoutersPreviewResponse{}

	return rsp, unm.Unmarshal(buf, rsp)
}

// Update updates the specified Router resource with the data included in the request. This method conforms to PUT semantics, which requests that the state of the target resource be created or replaced with the state defined by the representation enclosed in the request message payload.
func (c *routersRESTClient) Update(ctx context.Context, req *computepb.UpdateRouterRequest, opts ...gax.CallOption) (*computepb.Operation, error) {
	m := protojson.MarshalOptions{AllowPartial: true, EmitUnpopulated: true}
	body := req.GetRouterResource()
	jsonReq, err := m.Marshal(body)
	if err != nil {
		return nil, err
	}

	baseUrl, _ := url.Parse(c.endpoint)
	baseUrl.Path += fmt.Sprintf("")

	params := url.Values{}
	if req.GetProject() != "" {
		params.Add("project", fmt.Sprintf("%v", req.GetProject()))
	}
	if req.GetRegion() != "" {
		params.Add("region", fmt.Sprintf("%v", req.GetRegion()))
	}
	if req != nil && req.RequestId != nil {
		params.Add("requestId", fmt.Sprintf("%v", req.GetRequestId()))
	}
	if req.GetRouter() != "" {
		params.Add("router", fmt.Sprintf("%v", req.GetRouter()))
	}

	baseUrl.RawQuery = params.Encode()

	httpReq, err := http.NewRequest("PUT", baseUrl.String(), bytes.NewReader(jsonReq))
	if err != nil {
		return nil, err
	}
	httpReq = httpReq.WithContext(ctx)
	// Set the headers
	for k, v := range c.xGoogMetadata {
		httpReq.Header[k] = v
	}
	httpReq.Header["Content-Type"] = []string{"application/json"}

	httpRsp, err := c.httpClient.Do(httpReq)
	if err != nil {
		return nil, err
	}
	defer httpRsp.Body.Close()

	if httpRsp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf(httpRsp.Status)
	}

	buf, err := ioutil.ReadAll(httpRsp.Body)
	if err != nil {
		return nil, err
	}

	unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true}
	rsp := &computepb.Operation{}

	return rsp, unm.Unmarshal(buf, rsp)
}