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- // 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 dialogflow
-
- import (
- "math"
- "time"
-
- "cloud.google.com/go/internal/version"
- gax "github.com/googleapis/gax-go"
- "golang.org/x/net/context"
- "google.golang.org/api/iterator"
- "google.golang.org/api/option"
- "google.golang.org/api/transport"
- dialogflowpb "google.golang.org/genproto/googleapis/cloud/dialogflow/v2"
- "google.golang.org/grpc"
- "google.golang.org/grpc/codes"
- "google.golang.org/grpc/metadata"
- )
-
- // ContextsCallOptions contains the retry settings for each method of ContextsClient.
- type ContextsCallOptions struct {
- ListContexts []gax.CallOption
- GetContext []gax.CallOption
- CreateContext []gax.CallOption
- UpdateContext []gax.CallOption
- DeleteContext []gax.CallOption
- DeleteAllContexts []gax.CallOption
- }
-
- func defaultContextsClientOptions() []option.ClientOption {
- return []option.ClientOption{
- option.WithEndpoint("dialogflow.googleapis.com:443"),
- option.WithScopes(DefaultAuthScopes()...),
- }
- }
-
- func defaultContextsCallOptions() *ContextsCallOptions {
- 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: 100 * time.Millisecond,
- Max: 60000 * time.Millisecond,
- Multiplier: 1.3,
- })
- }),
- },
- }
- return &ContextsCallOptions{
- ListContexts: retry[[2]string{"default", "idempotent"}],
- GetContext: retry[[2]string{"default", "idempotent"}],
- CreateContext: retry[[2]string{"default", "non_idempotent"}],
- UpdateContext: retry[[2]string{"default", "non_idempotent"}],
- DeleteContext: retry[[2]string{"default", "idempotent"}],
- DeleteAllContexts: retry[[2]string{"default", "idempotent"}],
- }
- }
-
- // ContextsClient is a client for interacting with Dialogflow API.
- //
- // Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
- type ContextsClient struct {
- // The connection to the service.
- conn *grpc.ClientConn
-
- // The gRPC API client.
- contextsClient dialogflowpb.ContextsClient
-
- // The call options for this service.
- CallOptions *ContextsCallOptions
-
- // The x-goog-* metadata to be sent with each request.
- xGoogMetadata metadata.MD
- }
-
- // NewContextsClient creates a new contexts client.
- //
- // A context represents additional information included with user input or with
- // an intent returned by the Dialogflow API. Contexts are helpful for
- // differentiating user input which may be vague or have a different meaning
- // depending on additional details from your application such as user setting
- // and preferences, previous user input, where the user is in your application,
- // geographic location, and so on.
- //
- // You can include contexts as input parameters of a
- // [DetectIntent][google.cloud.dialogflow.v2.Sessions.DetectIntent] (or
- // [StreamingDetectIntent][google.cloud.dialogflow.v2.Sessions.StreamingDetectIntent]) request,
- // or as output contexts included in the returned intent.
- // Contexts expire when an intent is matched, after the number of DetectIntent
- // requests specified by the lifespan_count parameter, or after 10 minutes
- // if no intents are matched for a DetectIntent request.
- //
- // For more information about contexts, see the
- // Dialogflow documentation (at https://dialogflow.com/docs/contexts).
- func NewContextsClient(ctx context.Context, opts ...option.ClientOption) (*ContextsClient, error) {
- conn, err := transport.DialGRPC(ctx, append(defaultContextsClientOptions(), opts...)...)
- if err != nil {
- return nil, err
- }
- c := &ContextsClient{
- conn: conn,
- CallOptions: defaultContextsCallOptions(),
-
- contextsClient: dialogflowpb.NewContextsClient(conn),
- }
- c.setGoogleClientInfo()
- return c, nil
- }
-
- // Connection returns the client's connection to the API service.
- func (c *ContextsClient) 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 *ContextsClient) 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 *ContextsClient) 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...))
- }
-
- // ListContexts returns the list of all contexts in the specified session.
- func (c *ContextsClient) ListContexts(ctx context.Context, req *dialogflowpb.ListContextsRequest, opts ...gax.CallOption) *ContextIterator {
- ctx = insertMetadata(ctx, c.xGoogMetadata)
- opts = append(c.CallOptions.ListContexts[0:len(c.CallOptions.ListContexts):len(c.CallOptions.ListContexts)], opts...)
- it := &ContextIterator{}
- it.InternalFetch = func(pageSize int, pageToken string) ([]*dialogflowpb.Context, string, error) {
- var resp *dialogflowpb.ListContextsResponse
- req.PageToken = pageToken
- if pageSize > math.MaxInt32 {
- req.PageSize = math.MaxInt32
- } else {
- req.PageSize = int32(pageSize)
- }
- err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
- var err error
- resp, err = c.contextsClient.ListContexts(ctx, req, settings.GRPC...)
- return err
- }, opts...)
- if err != nil {
- return nil, "", err
- }
- return resp.Contexts, resp.NextPageToken, nil
- }
- fetch := func(pageSize int, pageToken string) (string, error) {
- items, nextPageToken, err := it.InternalFetch(pageSize, pageToken)
- if err != nil {
- return "", err
- }
- it.items = append(it.items, items...)
- return nextPageToken, nil
- }
- it.pageInfo, it.nextFunc = iterator.NewPageInfo(fetch, it.bufLen, it.takeBuf)
- return it
- }
-
- // GetContext retrieves the specified context.
- func (c *ContextsClient) GetContext(ctx context.Context, req *dialogflowpb.GetContextRequest, opts ...gax.CallOption) (*dialogflowpb.Context, error) {
- ctx = insertMetadata(ctx, c.xGoogMetadata)
- opts = append(c.CallOptions.GetContext[0:len(c.CallOptions.GetContext):len(c.CallOptions.GetContext)], opts...)
- var resp *dialogflowpb.Context
- err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
- var err error
- resp, err = c.contextsClient.GetContext(ctx, req, settings.GRPC...)
- return err
- }, opts...)
- if err != nil {
- return nil, err
- }
- return resp, nil
- }
-
- // CreateContext creates a context.
- func (c *ContextsClient) CreateContext(ctx context.Context, req *dialogflowpb.CreateContextRequest, opts ...gax.CallOption) (*dialogflowpb.Context, error) {
- ctx = insertMetadata(ctx, c.xGoogMetadata)
- opts = append(c.CallOptions.CreateContext[0:len(c.CallOptions.CreateContext):len(c.CallOptions.CreateContext)], opts...)
- var resp *dialogflowpb.Context
- err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
- var err error
- resp, err = c.contextsClient.CreateContext(ctx, req, settings.GRPC...)
- return err
- }, opts...)
- if err != nil {
- return nil, err
- }
- return resp, nil
- }
-
- // UpdateContext updates the specified context.
- func (c *ContextsClient) UpdateContext(ctx context.Context, req *dialogflowpb.UpdateContextRequest, opts ...gax.CallOption) (*dialogflowpb.Context, error) {
- ctx = insertMetadata(ctx, c.xGoogMetadata)
- opts = append(c.CallOptions.UpdateContext[0:len(c.CallOptions.UpdateContext):len(c.CallOptions.UpdateContext)], opts...)
- var resp *dialogflowpb.Context
- err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
- var err error
- resp, err = c.contextsClient.UpdateContext(ctx, req, settings.GRPC...)
- return err
- }, opts...)
- if err != nil {
- return nil, err
- }
- return resp, nil
- }
-
- // DeleteContext deletes the specified context.
- func (c *ContextsClient) DeleteContext(ctx context.Context, req *dialogflowpb.DeleteContextRequest, opts ...gax.CallOption) error {
- ctx = insertMetadata(ctx, c.xGoogMetadata)
- opts = append(c.CallOptions.DeleteContext[0:len(c.CallOptions.DeleteContext):len(c.CallOptions.DeleteContext)], opts...)
- err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
- var err error
- _, err = c.contextsClient.DeleteContext(ctx, req, settings.GRPC...)
- return err
- }, opts...)
- return err
- }
-
- // DeleteAllContexts deletes all active contexts in the specified session.
- func (c *ContextsClient) DeleteAllContexts(ctx context.Context, req *dialogflowpb.DeleteAllContextsRequest, opts ...gax.CallOption) error {
- ctx = insertMetadata(ctx, c.xGoogMetadata)
- opts = append(c.CallOptions.DeleteAllContexts[0:len(c.CallOptions.DeleteAllContexts):len(c.CallOptions.DeleteAllContexts)], opts...)
- err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
- var err error
- _, err = c.contextsClient.DeleteAllContexts(ctx, req, settings.GRPC...)
- return err
- }, opts...)
- return err
- }
-
- // ContextIterator manages a stream of *dialogflowpb.Context.
- type ContextIterator struct {
- items []*dialogflowpb.Context
- pageInfo *iterator.PageInfo
- nextFunc func() error
-
- // InternalFetch is for use by the Google Cloud Libraries only.
- // It is not part of the stable interface of this package.
- //
- // InternalFetch returns results from a single call to the underlying RPC.
- // The number of results is no greater than pageSize.
- // If there are no more results, nextPageToken is empty and err is nil.
- InternalFetch func(pageSize int, pageToken string) (results []*dialogflowpb.Context, nextPageToken string, err error)
- }
-
- // PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
- func (it *ContextIterator) PageInfo() *iterator.PageInfo {
- return it.pageInfo
- }
-
- // Next returns the next result. Its second return value is iterator.Done if there are no more
- // results. Once Next returns Done, all subsequent calls will return Done.
- func (it *ContextIterator) Next() (*dialogflowpb.Context, error) {
- var item *dialogflowpb.Context
- if err := it.nextFunc(); err != nil {
- return item, err
- }
- item = it.items[0]
- it.items = it.items[1:]
- return item, nil
- }
-
- func (it *ContextIterator) bufLen() int {
- return len(it.items)
- }
-
- func (it *ContextIterator) takeBuf() interface{} {
- b := it.items
- it.items = nil
- return b
- }
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