| // Copyright 2018 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. |
| |
| // AUTO-GENERATED CODE. DO NOT EDIT. |
| |
| package videointelligence |
| |
| import ( |
| "time" |
| |
| "cloud.google.com/go/internal/version" |
| "cloud.google.com/go/longrunning" |
| lroauto "cloud.google.com/go/longrunning/autogen" |
| gax "github.com/googleapis/gax-go" |
| "golang.org/x/net/context" |
| "google.golang.org/api/option" |
| "google.golang.org/api/transport" |
| videointelligencepb "google.golang.org/genproto/googleapis/cloud/videointelligence/v1" |
| longrunningpb "google.golang.org/genproto/googleapis/longrunning" |
| "google.golang.org/grpc" |
| "google.golang.org/grpc/codes" |
| "google.golang.org/grpc/metadata" |
| ) |
| |
| // CallOptions contains the retry settings for each method of Client. |
| type CallOptions struct { |
| AnnotateVideo []gax.CallOption |
| } |
| |
| func defaultClientOptions() []option.ClientOption { |
| return []option.ClientOption{ |
| option.WithEndpoint("videointelligence.googleapis.com:443"), |
| option.WithScopes(DefaultAuthScopes()...), |
| } |
| } |
| |
| func defaultCallOptions() *CallOptions { |
| retry := map[[2]string][]gax.CallOption{ |
| {"default", "idempotent"}: { |
| gax.WithRetry(func() gax.Retryer { |
| return gax.OnCodes([]codes.Code{ |
| codes.DeadlineExceeded, |
| codes.Unavailable, |
| }, gax.Backoff{ |
| Initial: 1000 * time.Millisecond, |
| Max: 120000 * time.Millisecond, |
| Multiplier: 2.5, |
| }) |
| }), |
| }, |
| } |
| return &CallOptions{ |
| AnnotateVideo: retry[[2]string{"default", "idempotent"}], |
| } |
| } |
| |
| // Client is a client for interacting with Cloud Video Intelligence API. |
| // |
| // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls. |
| type Client struct { |
| // The connection to the service. |
| conn *grpc.ClientConn |
| |
| // The gRPC API client. |
| client videointelligencepb.VideoIntelligenceServiceClient |
| |
| // LROClient is used internally to handle longrunning operations. |
| // It is exposed so that its CallOptions can be modified if required. |
| // Users should not Close this client. |
| LROClient *lroauto.OperationsClient |
| |
| // The call options for this service. |
| CallOptions *CallOptions |
| |
| // The x-goog-* metadata to be sent with each request. |
| xGoogMetadata metadata.MD |
| } |
| |
| // NewClient creates a new video intelligence service client. |
| // |
| // Service that implements Google Cloud Video Intelligence API. |
| func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error) { |
| conn, err := transport.DialGRPC(ctx, append(defaultClientOptions(), opts...)...) |
| if err != nil { |
| return nil, err |
| } |
| c := &Client{ |
| conn: conn, |
| CallOptions: defaultCallOptions(), |
| |
| client: videointelligencepb.NewVideoIntelligenceServiceClient(conn), |
| } |
| c.setGoogleClientInfo() |
| |
| c.LROClient, err = lroauto.NewOperationsClient(ctx, option.WithGRPCConn(conn)) |
| if err != nil { |
| // This error "should not happen", since we are just reusing old connection |
| // and never actually need to dial. |
| // If this does happen, we could leak conn. However, we cannot close conn: |
| // If the user invoked the function with option.WithGRPCConn, |
| // we would close a connection that's still in use. |
| // TODO(pongad): investigate error conditions. |
| return nil, err |
| } |
| return c, nil |
| } |
| |
| // Connection returns the client's connection to the API service. |
| func (c *Client) Connection() *grpc.ClientConn { |
| return c.conn |
| } |
| |
| // Close closes the connection to the API service. The user should invoke this when |
| // the client is no longer required. |
| func (c *Client) Close() error { |
| return c.conn.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 *Client) setGoogleClientInfo(keyval ...string) { |
| kv := append([]string{"gl-go", version.Go()}, keyval...) |
| kv = append(kv, "gapic", version.Repo, "gax", gax.Version, "grpc", grpc.Version) |
| c.xGoogMetadata = metadata.Pairs("x-goog-api-client", gax.XGoogHeader(kv...)) |
| } |
| |
| // AnnotateVideo performs asynchronous video annotation. Progress and results can be |
| // retrieved through the google.longrunning.Operations interface. |
| // Operation.metadata contains AnnotateVideoProgress (progress). |
| // Operation.response contains AnnotateVideoResponse (results). |
| func (c *Client) AnnotateVideo(ctx context.Context, req *videointelligencepb.AnnotateVideoRequest, opts ...gax.CallOption) (*AnnotateVideoOperation, error) { |
| ctx = insertMetadata(ctx, c.xGoogMetadata) |
| opts = append(c.CallOptions.AnnotateVideo[0:len(c.CallOptions.AnnotateVideo):len(c.CallOptions.AnnotateVideo)], opts...) |
| var resp *longrunningpb.Operation |
| err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error { |
| var err error |
| resp, err = c.client.AnnotateVideo(ctx, req, settings.GRPC...) |
| return err |
| }, opts...) |
| if err != nil { |
| return nil, err |
| } |
| return &AnnotateVideoOperation{ |
| lro: longrunning.InternalNewOperation(c.LROClient, resp), |
| }, nil |
| } |
| |
| // AnnotateVideoOperation manages a long-running operation from AnnotateVideo. |
| type AnnotateVideoOperation struct { |
| lro *longrunning.Operation |
| } |
| |
| // AnnotateVideoOperation returns a new AnnotateVideoOperation from a given name. |
| // The name must be that of a previously created AnnotateVideoOperation, possibly from a different process. |
| func (c *Client) AnnotateVideoOperation(name string) *AnnotateVideoOperation { |
| return &AnnotateVideoOperation{ |
| lro: longrunning.InternalNewOperation(c.LROClient, &longrunningpb.Operation{Name: name}), |
| } |
| } |
| |
| // Wait blocks until the long-running operation is completed, returning the response and any errors encountered. |
| // |
| // See documentation of Poll for error-handling information. |
| func (op *AnnotateVideoOperation) Wait(ctx context.Context, opts ...gax.CallOption) (*videointelligencepb.AnnotateVideoResponse, error) { |
| var resp videointelligencepb.AnnotateVideoResponse |
| if err := op.lro.WaitWithInterval(ctx, &resp, 45000*time.Millisecond, opts...); err != nil { |
| return nil, err |
| } |
| return &resp, nil |
| } |
| |
| // Poll fetches the latest state of the long-running operation. |
| // |
| // Poll also fetches the latest metadata, which can be retrieved by Metadata. |
| // |
| // If Poll fails, the error is returned and op is unmodified. If Poll succeeds and |
| // the operation has completed with failure, the error is returned and op.Done will return true. |
| // If Poll succeeds and the operation has completed successfully, |
| // op.Done will return true, and the response of the operation is returned. |
| // If Poll succeeds and the operation has not completed, the returned response and error are both nil. |
| func (op *AnnotateVideoOperation) Poll(ctx context.Context, opts ...gax.CallOption) (*videointelligencepb.AnnotateVideoResponse, error) { |
| var resp videointelligencepb.AnnotateVideoResponse |
| if err := op.lro.Poll(ctx, &resp, opts...); err != nil { |
| return nil, err |
| } |
| if !op.Done() { |
| return nil, nil |
| } |
| return &resp, nil |
| } |
| |
| // Metadata returns metadata associated with the long-running operation. |
| // Metadata itself does not contact the server, but Poll does. |
| // To get the latest metadata, call this method after a successful call to Poll. |
| // If the metadata is not available, the returned metadata and error are both nil. |
| func (op *AnnotateVideoOperation) Metadata() (*videointelligencepb.AnnotateVideoProgress, error) { |
| var meta videointelligencepb.AnnotateVideoProgress |
| if err := op.lro.Metadata(&meta); err == longrunning.ErrNoMetadata { |
| return nil, nil |
| } else if err != nil { |
| return nil, err |
| } |
| return &meta, nil |
| } |
| |
| // Done reports whether the long-running operation has completed. |
| func (op *AnnotateVideoOperation) Done() bool { |
| return op.lro.Done() |
| } |
| |
| // Name returns the name of the long-running operation. |
| // The name is assigned by the server and is unique within the service from which the operation is created. |
| func (op *AnnotateVideoOperation) Name() string { |
| return op.lro.Name() |
| } |