| // Copyright 2024 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 storage |
| |
| import ( |
| "bytes" |
| "context" |
| "errors" |
| "fmt" |
| "io" |
| "math" |
| "net/http" |
| "net/url" |
| "time" |
| |
| storagepb "cloud.google.com/go/bigquery/storage/apiv1beta2/storagepb" |
| gax "github.com/googleapis/gax-go/v2" |
| "google.golang.org/api/googleapi" |
| "google.golang.org/api/option" |
| "google.golang.org/api/option/internaloption" |
| gtransport "google.golang.org/api/transport/grpc" |
| httptransport "google.golang.org/api/transport/http" |
| "google.golang.org/grpc" |
| "google.golang.org/grpc/codes" |
| "google.golang.org/grpc/metadata" |
| "google.golang.org/protobuf/encoding/protojson" |
| ) |
| |
| var newBigQueryReadClientHook clientHook |
| |
| // BigQueryReadCallOptions contains the retry settings for each method of BigQueryReadClient. |
| type BigQueryReadCallOptions struct { |
| CreateReadSession []gax.CallOption |
| ReadRows []gax.CallOption |
| SplitReadStream []gax.CallOption |
| } |
| |
| func defaultBigQueryReadGRPCClientOptions() []option.ClientOption { |
| return []option.ClientOption{ |
| internaloption.WithDefaultEndpoint("bigquerystorage.googleapis.com:443"), |
| internaloption.WithDefaultEndpointTemplate("bigquerystorage.UNIVERSE_DOMAIN:443"), |
| internaloption.WithDefaultMTLSEndpoint("bigquerystorage.mtls.googleapis.com:443"), |
| internaloption.WithDefaultUniverseDomain("googleapis.com"), |
| internaloption.WithDefaultAudience("https://bigquerystorage.googleapis.com/"), |
| internaloption.WithDefaultScopes(DefaultAuthScopes()...), |
| internaloption.EnableJwtWithScope(), |
| option.WithGRPCDialOption(grpc.WithDefaultCallOptions( |
| grpc.MaxCallRecvMsgSize(math.MaxInt32))), |
| } |
| } |
| |
| func defaultBigQueryReadCallOptions() *BigQueryReadCallOptions { |
| return &BigQueryReadCallOptions{ |
| CreateReadSession: []gax.CallOption{ |
| gax.WithTimeout(600000 * time.Millisecond), |
| gax.WithRetry(func() gax.Retryer { |
| return gax.OnCodes([]codes.Code{ |
| codes.DeadlineExceeded, |
| codes.Unavailable, |
| }, gax.Backoff{ |
| Initial: 100 * time.Millisecond, |
| Max: 60000 * time.Millisecond, |
| Multiplier: 1.30, |
| }) |
| }), |
| }, |
| ReadRows: []gax.CallOption{ |
| gax.WithRetry(func() gax.Retryer { |
| return gax.OnCodes([]codes.Code{ |
| codes.Unavailable, |
| }, gax.Backoff{ |
| Initial: 100 * time.Millisecond, |
| Max: 60000 * time.Millisecond, |
| Multiplier: 1.30, |
| }) |
| }), |
| }, |
| SplitReadStream: []gax.CallOption{ |
| gax.WithTimeout(600000 * time.Millisecond), |
| gax.WithRetry(func() gax.Retryer { |
| return gax.OnCodes([]codes.Code{ |
| codes.DeadlineExceeded, |
| codes.Unavailable, |
| }, gax.Backoff{ |
| Initial: 100 * time.Millisecond, |
| Max: 60000 * time.Millisecond, |
| Multiplier: 1.30, |
| }) |
| }), |
| }, |
| } |
| } |
| |
| func defaultBigQueryReadRESTCallOptions() *BigQueryReadCallOptions { |
| return &BigQueryReadCallOptions{ |
| CreateReadSession: []gax.CallOption{ |
| gax.WithTimeout(600000 * time.Millisecond), |
| gax.WithRetry(func() gax.Retryer { |
| return gax.OnHTTPCodes(gax.Backoff{ |
| Initial: 100 * time.Millisecond, |
| Max: 60000 * time.Millisecond, |
| Multiplier: 1.30, |
| }, |
| http.StatusGatewayTimeout, |
| http.StatusServiceUnavailable) |
| }), |
| }, |
| ReadRows: []gax.CallOption{ |
| gax.WithTimeout(86400000 * time.Millisecond), |
| gax.WithRetry(func() gax.Retryer { |
| return gax.OnHTTPCodes(gax.Backoff{ |
| Initial: 100 * time.Millisecond, |
| Max: 60000 * time.Millisecond, |
| Multiplier: 1.30, |
| }, |
| http.StatusServiceUnavailable) |
| }), |
| }, |
| SplitReadStream: []gax.CallOption{ |
| gax.WithTimeout(600000 * time.Millisecond), |
| gax.WithRetry(func() gax.Retryer { |
| return gax.OnHTTPCodes(gax.Backoff{ |
| Initial: 100 * time.Millisecond, |
| Max: 60000 * time.Millisecond, |
| Multiplier: 1.30, |
| }, |
| http.StatusGatewayTimeout, |
| http.StatusServiceUnavailable) |
| }), |
| }, |
| } |
| } |
| |
| // internalBigQueryReadClient is an interface that defines the methods available from BigQuery Storage API. |
| type internalBigQueryReadClient interface { |
| Close() error |
| setGoogleClientInfo(...string) |
| Connection() *grpc.ClientConn |
| CreateReadSession(context.Context, *storagepb.CreateReadSessionRequest, ...gax.CallOption) (*storagepb.ReadSession, error) |
| ReadRows(context.Context, *storagepb.ReadRowsRequest, ...gax.CallOption) (storagepb.BigQueryRead_ReadRowsClient, error) |
| SplitReadStream(context.Context, *storagepb.SplitReadStreamRequest, ...gax.CallOption) (*storagepb.SplitReadStreamResponse, error) |
| } |
| |
| // BigQueryReadClient is a client for interacting with BigQuery Storage API. |
| // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls. |
| // |
| // BigQuery Read API. |
| // |
| // The Read API can be used to read data from BigQuery. |
| // |
| // New code should use the v1 Read API going forward, if they don’t use Write |
| // API at the same time. |
| type BigQueryReadClient struct { |
| // The internal transport-dependent client. |
| internalClient internalBigQueryReadClient |
| |
| // The call options for this service. |
| CallOptions *BigQueryReadCallOptions |
| } |
| |
| // 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 *BigQueryReadClient) 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 *BigQueryReadClient) setGoogleClientInfo(keyval ...string) { |
| c.internalClient.setGoogleClientInfo(keyval...) |
| } |
| |
| // Connection returns a connection to the API service. |
| // |
| // Deprecated: Connections are now pooled so this method does not always |
| // return the same resource. |
| func (c *BigQueryReadClient) Connection() *grpc.ClientConn { |
| return c.internalClient.Connection() |
| } |
| |
| // CreateReadSession creates a new read session. A read session divides the contents of a |
| // BigQuery table into one or more streams, which can then be used to read |
| // data from the table. The read session also specifies properties of the |
| // data to be read, such as a list of columns or a push-down filter describing |
| // the rows to be returned. |
| // |
| // A particular row can be read by at most one stream. When the caller has |
| // reached the end of each stream in the session, then all the data in the |
| // table has been read. |
| // |
| // Data is assigned to each stream such that roughly the same number of |
| // rows can be read from each stream. Because the server-side unit for |
| // assigning data is collections of rows, the API does not guarantee that |
| // each stream will return the same number or rows. Additionally, the |
| // limits are enforced based on the number of pre-filtered rows, so some |
| // filters can lead to lopsided assignments. |
| // |
| // Read sessions automatically expire 6 hours after they are created and do |
| // not require manual clean-up by the caller. |
| func (c *BigQueryReadClient) CreateReadSession(ctx context.Context, req *storagepb.CreateReadSessionRequest, opts ...gax.CallOption) (*storagepb.ReadSession, error) { |
| return c.internalClient.CreateReadSession(ctx, req, opts...) |
| } |
| |
| // ReadRows reads rows from the stream in the format prescribed by the ReadSession. |
| // Each response contains one or more table rows, up to a maximum of 100 MiB |
| // per response; read requests which attempt to read individual rows larger |
| // than 100 MiB will fail. |
| // |
| // Each request also returns a set of stream statistics reflecting the current |
| // state of the stream. |
| func (c *BigQueryReadClient) ReadRows(ctx context.Context, req *storagepb.ReadRowsRequest, opts ...gax.CallOption) (storagepb.BigQueryRead_ReadRowsClient, error) { |
| return c.internalClient.ReadRows(ctx, req, opts...) |
| } |
| |
| // SplitReadStream splits a given ReadStream into two ReadStream objects. These |
| // ReadStream objects are referred to as the primary and the residual |
| // streams of the split. The original ReadStream can still be read from in |
| // the same manner as before. Both of the returned ReadStream objects can |
| // also be read from, and the rows returned by both child streams will be |
| // the same as the rows read from the original stream. |
| // |
| // Moreover, the two child streams will be allocated back-to-back in the |
| // original ReadStream. Concretely, it is guaranteed that for streams |
| // original, primary, and residual, that original[0-j] = primary[0-j] and |
| // original[j-n] = residual[0-m] once the streams have been read to |
| // completion. |
| func (c *BigQueryReadClient) SplitReadStream(ctx context.Context, req *storagepb.SplitReadStreamRequest, opts ...gax.CallOption) (*storagepb.SplitReadStreamResponse, error) { |
| return c.internalClient.SplitReadStream(ctx, req, opts...) |
| } |
| |
| // bigQueryReadGRPCClient is a client for interacting with BigQuery Storage API over gRPC transport. |
| // |
| // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls. |
| type bigQueryReadGRPCClient struct { |
| // Connection pool of gRPC connections to the service. |
| connPool gtransport.ConnPool |
| |
| // Points back to the CallOptions field of the containing BigQueryReadClient |
| CallOptions **BigQueryReadCallOptions |
| |
| // The gRPC API client. |
| bigQueryReadClient storagepb.BigQueryReadClient |
| |
| // The x-goog-* metadata to be sent with each request. |
| xGoogHeaders []string |
| } |
| |
| // NewBigQueryReadClient creates a new big query read client based on gRPC. |
| // The returned client must be Closed when it is done being used to clean up its underlying connections. |
| // |
| // BigQuery Read API. |
| // |
| // The Read API can be used to read data from BigQuery. |
| // |
| // New code should use the v1 Read API going forward, if they don’t use Write |
| // API at the same time. |
| func NewBigQueryReadClient(ctx context.Context, opts ...option.ClientOption) (*BigQueryReadClient, error) { |
| clientOpts := defaultBigQueryReadGRPCClientOptions() |
| if newBigQueryReadClientHook != nil { |
| hookOpts, err := newBigQueryReadClientHook(ctx, clientHookParams{}) |
| if err != nil { |
| return nil, err |
| } |
| clientOpts = append(clientOpts, hookOpts...) |
| } |
| |
| connPool, err := gtransport.DialPool(ctx, append(clientOpts, opts...)...) |
| if err != nil { |
| return nil, err |
| } |
| client := BigQueryReadClient{CallOptions: defaultBigQueryReadCallOptions()} |
| |
| c := &bigQueryReadGRPCClient{ |
| connPool: connPool, |
| bigQueryReadClient: storagepb.NewBigQueryReadClient(connPool), |
| CallOptions: &client.CallOptions, |
| } |
| c.setGoogleClientInfo() |
| |
| client.internalClient = c |
| |
| return &client, nil |
| } |
| |
| // Connection returns a connection to the API service. |
| // |
| // Deprecated: Connections are now pooled so this method does not always |
| // return the same resource. |
| func (c *bigQueryReadGRPCClient) Connection() *grpc.ClientConn { |
| return c.connPool.Conn() |
| } |
| |
| // 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 *bigQueryReadGRPCClient) setGoogleClientInfo(keyval ...string) { |
| kv := append([]string{"gl-go", gax.GoVersion}, keyval...) |
| kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "grpc", grpc.Version) |
| c.xGoogHeaders = []string{"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 *bigQueryReadGRPCClient) Close() error { |
| return c.connPool.Close() |
| } |
| |
| // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls. |
| type bigQueryReadRESTClient struct { |
| // The http endpoint to connect to. |
| endpoint string |
| |
| // The http client. |
| httpClient *http.Client |
| |
| // The x-goog-* headers to be sent with each request. |
| xGoogHeaders []string |
| |
| // Points back to the CallOptions field of the containing BigQueryReadClient |
| CallOptions **BigQueryReadCallOptions |
| } |
| |
| // NewBigQueryReadRESTClient creates a new big query read rest client. |
| // |
| // BigQuery Read API. |
| // |
| // The Read API can be used to read data from BigQuery. |
| // |
| // New code should use the v1 Read API going forward, if they don’t use Write |
| // API at the same time. |
| func NewBigQueryReadRESTClient(ctx context.Context, opts ...option.ClientOption) (*BigQueryReadClient, error) { |
| clientOpts := append(defaultBigQueryReadRESTClientOptions(), opts...) |
| httpClient, endpoint, err := httptransport.NewClient(ctx, clientOpts...) |
| if err != nil { |
| return nil, err |
| } |
| |
| callOpts := defaultBigQueryReadRESTCallOptions() |
| c := &bigQueryReadRESTClient{ |
| endpoint: endpoint, |
| httpClient: httpClient, |
| CallOptions: &callOpts, |
| } |
| c.setGoogleClientInfo() |
| |
| return &BigQueryReadClient{internalClient: c, CallOptions: callOpts}, nil |
| } |
| |
| func defaultBigQueryReadRESTClientOptions() []option.ClientOption { |
| return []option.ClientOption{ |
| internaloption.WithDefaultEndpoint("https://bigquerystorage.googleapis.com"), |
| internaloption.WithDefaultEndpointTemplate("https://bigquerystorage.UNIVERSE_DOMAIN"), |
| internaloption.WithDefaultMTLSEndpoint("https://bigquerystorage.mtls.googleapis.com"), |
| internaloption.WithDefaultUniverseDomain("googleapis.com"), |
| internaloption.WithDefaultAudience("https://bigquerystorage.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 *bigQueryReadRESTClient) setGoogleClientInfo(keyval ...string) { |
| kv := append([]string{"gl-go", gax.GoVersion}, keyval...) |
| kv = append(kv, "gapic", getVersionClient(), "gax", gax.Version, "rest", "UNKNOWN") |
| c.xGoogHeaders = []string{"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 *bigQueryReadRESTClient) Close() error { |
| // Replace httpClient with nil to force cleanup. |
| c.httpClient = nil |
| return nil |
| } |
| |
| // Connection returns a connection to the API service. |
| // |
| // Deprecated: This method always returns nil. |
| func (c *bigQueryReadRESTClient) Connection() *grpc.ClientConn { |
| return nil |
| } |
| func (c *bigQueryReadGRPCClient) CreateReadSession(ctx context.Context, req *storagepb.CreateReadSessionRequest, opts ...gax.CallOption) (*storagepb.ReadSession, error) { |
| hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "read_session.table", url.QueryEscape(req.GetReadSession().GetTable()))} |
| |
| hds = append(c.xGoogHeaders, hds...) |
| ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...) |
| opts = append((*c.CallOptions).CreateReadSession[0:len((*c.CallOptions).CreateReadSession):len((*c.CallOptions).CreateReadSession)], opts...) |
| var resp *storagepb.ReadSession |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.bigQueryReadClient.CreateReadSession(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| func (c *bigQueryReadGRPCClient) ReadRows(ctx context.Context, req *storagepb.ReadRowsRequest, opts ...gax.CallOption) (storagepb.BigQueryRead_ReadRowsClient, error) { |
| hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "read_stream", url.QueryEscape(req.GetReadStream()))} |
| |
| hds = append(c.xGoogHeaders, hds...) |
| ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...) |
| opts = append((*c.CallOptions).ReadRows[0:len((*c.CallOptions).ReadRows):len((*c.CallOptions).ReadRows)], opts...) |
| var resp storagepb.BigQueryRead_ReadRowsClient |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.bigQueryReadClient.ReadRows(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| func (c *bigQueryReadGRPCClient) SplitReadStream(ctx context.Context, req *storagepb.SplitReadStreamRequest, opts ...gax.CallOption) (*storagepb.SplitReadStreamResponse, error) { |
| hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))} |
| |
| hds = append(c.xGoogHeaders, hds...) |
| ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...) |
| opts = append((*c.CallOptions).SplitReadStream[0:len((*c.CallOptions).SplitReadStream):len((*c.CallOptions).SplitReadStream)], opts...) |
| var resp *storagepb.SplitReadStreamResponse |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.bigQueryReadClient.SplitReadStream(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return resp, nil |
| } |
| |
| // CreateReadSession creates a new read session. A read session divides the contents of a |
| // BigQuery table into one or more streams, which can then be used to read |
| // data from the table. The read session also specifies properties of the |
| // data to be read, such as a list of columns or a push-down filter describing |
| // the rows to be returned. |
| // |
| // A particular row can be read by at most one stream. When the caller has |
| // reached the end of each stream in the session, then all the data in the |
| // table has been read. |
| // |
| // Data is assigned to each stream such that roughly the same number of |
| // rows can be read from each stream. Because the server-side unit for |
| // assigning data is collections of rows, the API does not guarantee that |
| // each stream will return the same number or rows. Additionally, the |
| // limits are enforced based on the number of pre-filtered rows, so some |
| // filters can lead to lopsided assignments. |
| // |
| // Read sessions automatically expire 6 hours after they are created and do |
| // not require manual clean-up by the caller. |
| func (c *bigQueryReadRESTClient) CreateReadSession(ctx context.Context, req *storagepb.CreateReadSessionRequest, opts ...gax.CallOption) (*storagepb.ReadSession, error) { |
| m := protojson.MarshalOptions{AllowPartial: true, UseEnumNumbers: true} |
| jsonReq, err := m.Marshal(req) |
| if err != nil { |
| return nil, err |
| } |
| |
| baseUrl, err := url.Parse(c.endpoint) |
| if err != nil { |
| return nil, err |
| } |
| baseUrl.Path += fmt.Sprintf("/v1beta2/%v", req.GetReadSession().GetTable()) |
| |
| // Build HTTP headers from client and context metadata. |
| hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "read_session.table", url.QueryEscape(req.GetReadSession().GetTable()))} |
| |
| hds = append(c.xGoogHeaders, hds...) |
| hds = append(hds, "Content-Type", "application/json") |
| headers := gax.BuildHeaders(ctx, hds...) |
| opts = append((*c.CallOptions).CreateReadSession[0:len((*c.CallOptions).CreateReadSession):len((*c.CallOptions).CreateReadSession)], opts...) |
| unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true} |
| resp := &storagepb.ReadSession{} |
| e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| if settings.Path != "" { |
| baseUrl.Path = settings.Path |
| } |
| httpReq, err := http.NewRequest("POST", baseUrl.String(), bytes.NewReader(jsonReq)) |
| if err != nil { |
| return err |
| } |
| httpReq = httpReq.WithContext(ctx) |
| httpReq.Header = headers |
| |
| httpRsp, err := c.httpClient.Do(httpReq) |
| if err != nil { |
| return err |
| } |
| defer httpRsp.Body.Close() |
| |
| if err = googleapi.CheckResponse(httpRsp); err != nil { |
| return err |
| } |
| |
| buf, err := io.ReadAll(httpRsp.Body) |
| if err != nil { |
| return err |
| } |
| |
| if err := unm.Unmarshal(buf, resp); err != nil { |
| return err |
| } |
| |
| return nil |
| }, opts...) |
| if e != nil { |
| return nil, e |
| } |
| return resp, nil |
| } |
| |
| // ReadRows reads rows from the stream in the format prescribed by the ReadSession. |
| // Each response contains one or more table rows, up to a maximum of 100 MiB |
| // per response; read requests which attempt to read individual rows larger |
| // than 100 MiB will fail. |
| // |
| // Each request also returns a set of stream statistics reflecting the current |
| // state of the stream. |
| func (c *bigQueryReadRESTClient) ReadRows(ctx context.Context, req *storagepb.ReadRowsRequest, opts ...gax.CallOption) (storagepb.BigQueryRead_ReadRowsClient, error) { |
| baseUrl, err := url.Parse(c.endpoint) |
| if err != nil { |
| return nil, err |
| } |
| baseUrl.Path += fmt.Sprintf("/v1beta2/%v", req.GetReadStream()) |
| |
| params := url.Values{} |
| if req.GetOffset() != 0 { |
| params.Add("offset", fmt.Sprintf("%v", req.GetOffset())) |
| } |
| |
| baseUrl.RawQuery = params.Encode() |
| |
| // Build HTTP headers from client and context metadata. |
| hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "read_stream", url.QueryEscape(req.GetReadStream()))} |
| |
| hds = append(c.xGoogHeaders, hds...) |
| hds = append(hds, "Content-Type", "application/json") |
| headers := gax.BuildHeaders(ctx, hds...) |
| var streamClient *readRowsRESTClient |
| e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| if settings.Path != "" { |
| baseUrl.Path = settings.Path |
| } |
| httpReq, err := http.NewRequest("GET", baseUrl.String(), nil) |
| if err != nil { |
| return err |
| } |
| httpReq = httpReq.WithContext(ctx) |
| httpReq.Header = headers |
| |
| httpRsp, err := c.httpClient.Do(httpReq) |
| if err != nil { |
| return err |
| } |
| |
| if err = googleapi.CheckResponse(httpRsp); err != nil { |
| return err |
| } |
| |
| streamClient = &readRowsRESTClient{ |
| ctx: ctx, |
| md: metadata.MD(httpRsp.Header), |
| stream: gax.NewProtoJSONStreamReader(httpRsp.Body, (&storagepb.ReadRowsResponse{}).ProtoReflect().Type()), |
| } |
| return nil |
| }, opts...) |
| |
| return streamClient, e |
| } |
| |
| // readRowsRESTClient is the stream client used to consume the server stream created by |
| // the REST implementation of ReadRows. |
| type readRowsRESTClient struct { |
| ctx context.Context |
| md metadata.MD |
| stream *gax.ProtoJSONStream |
| } |
| |
| func (c *readRowsRESTClient) Recv() (*storagepb.ReadRowsResponse, error) { |
| if err := c.ctx.Err(); err != nil { |
| defer c.stream.Close() |
| return nil, err |
| } |
| msg, err := c.stream.Recv() |
| if err != nil { |
| defer c.stream.Close() |
| return nil, err |
| } |
| res := msg.(*storagepb.ReadRowsResponse) |
| return res, nil |
| } |
| |
| func (c *readRowsRESTClient) Header() (metadata.MD, error) { |
| return c.md, nil |
| } |
| |
| func (c *readRowsRESTClient) Trailer() metadata.MD { |
| return c.md |
| } |
| |
| func (c *readRowsRESTClient) CloseSend() error { |
| // This is a no-op to fulfill the interface. |
| return errors.New("this method is not implemented for a server-stream") |
| } |
| |
| func (c *readRowsRESTClient) Context() context.Context { |
| return c.ctx |
| } |
| |
| func (c *readRowsRESTClient) SendMsg(m interface{}) error { |
| // This is a no-op to fulfill the interface. |
| return errors.New("this method is not implemented for a server-stream") |
| } |
| |
| func (c *readRowsRESTClient) RecvMsg(m interface{}) error { |
| // This is a no-op to fulfill the interface. |
| return errors.New("this method is not implemented, use Recv") |
| } |
| |
| // SplitReadStream splits a given ReadStream into two ReadStream objects. These |
| // ReadStream objects are referred to as the primary and the residual |
| // streams of the split. The original ReadStream can still be read from in |
| // the same manner as before. Both of the returned ReadStream objects can |
| // also be read from, and the rows returned by both child streams will be |
| // the same as the rows read from the original stream. |
| // |
| // Moreover, the two child streams will be allocated back-to-back in the |
| // original ReadStream. Concretely, it is guaranteed that for streams |
| // original, primary, and residual, that original[0-j] = primary[0-j] and |
| // original[j-n] = residual[0-m] once the streams have been read to |
| // completion. |
| func (c *bigQueryReadRESTClient) SplitReadStream(ctx context.Context, req *storagepb.SplitReadStreamRequest, opts ...gax.CallOption) (*storagepb.SplitReadStreamResponse, error) { |
| baseUrl, err := url.Parse(c.endpoint) |
| if err != nil { |
| return nil, err |
| } |
| baseUrl.Path += fmt.Sprintf("/v1beta2/%v", req.GetName()) |
| |
| params := url.Values{} |
| if req.GetFraction() != 0 { |
| params.Add("fraction", fmt.Sprintf("%v", req.GetFraction())) |
| } |
| |
| baseUrl.RawQuery = params.Encode() |
| |
| // Build HTTP headers from client and context metadata. |
| hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "name", url.QueryEscape(req.GetName()))} |
| |
| hds = append(c.xGoogHeaders, hds...) |
| hds = append(hds, "Content-Type", "application/json") |
| headers := gax.BuildHeaders(ctx, hds...) |
| opts = append((*c.CallOptions).SplitReadStream[0:len((*c.CallOptions).SplitReadStream):len((*c.CallOptions).SplitReadStream)], opts...) |
| unm := protojson.UnmarshalOptions{AllowPartial: true, DiscardUnknown: true} |
| resp := &storagepb.SplitReadStreamResponse{} |
| e := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| if settings.Path != "" { |
| baseUrl.Path = settings.Path |
| } |
| httpReq, err := http.NewRequest("GET", baseUrl.String(), nil) |
| if err != nil { |
| return err |
| } |
| httpReq = httpReq.WithContext(ctx) |
| httpReq.Header = headers |
| |
| httpRsp, err := c.httpClient.Do(httpReq) |
| if err != nil { |
| return err |
| } |
| defer httpRsp.Body.Close() |
| |
| if err = googleapi.CheckResponse(httpRsp); err != nil { |
| return err |
| } |
| |
| buf, err := io.ReadAll(httpRsp.Body) |
| if err != nil { |
| return err |
| } |
| |
| if err := unm.Unmarshal(buf, resp); err != nil { |
| return err |
| } |
| |
| return nil |
| }, opts...) |
| if e != nil { |
| return nil, e |
| } |
| return resp, nil |
| } |