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executions_client.go
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executions_client.go
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// Copyright 2023 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 executions
import (
"context"
"fmt"
"math"
"net/url"
executionspb "cloud.google.com/go/workflows/executions/apiv1/executionspb"
gax "github.com/googleapis/gax-go/v2"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
"google.golang.org/api/option/internaloption"
gtransport "google.golang.org/api/transport/grpc"
"google.golang.org/grpc"
"google.golang.org/protobuf/proto"
)
var newClientHook clientHook
// CallOptions contains the retry settings for each method of Client.
type CallOptions struct {
ListExecutions []gax.CallOption
CreateExecution []gax.CallOption
GetExecution []gax.CallOption
CancelExecution []gax.CallOption
}
func defaultGRPCClientOptions() []option.ClientOption {
return []option.ClientOption{
internaloption.WithDefaultEndpoint("workflowexecutions.googleapis.com:443"),
internaloption.WithDefaultMTLSEndpoint("workflowexecutions.mtls.googleapis.com:443"),
internaloption.WithDefaultAudience("https://workflowexecutions.googleapis.com/"),
internaloption.WithDefaultScopes(DefaultAuthScopes()...),
internaloption.EnableJwtWithScope(),
option.WithGRPCDialOption(grpc.WithDefaultCallOptions(
grpc.MaxCallRecvMsgSize(math.MaxInt32))),
}
}
func defaultCallOptions() *CallOptions {
return &CallOptions{
ListExecutions: []gax.CallOption{},
CreateExecution: []gax.CallOption{},
GetExecution: []gax.CallOption{},
CancelExecution: []gax.CallOption{},
}
}
// internalClient is an interface that defines the methods available from Workflow Executions API.
type internalClient interface {
Close() error
setGoogleClientInfo(...string)
Connection() *grpc.ClientConn
ListExecutions(context.Context, *executionspb.ListExecutionsRequest, ...gax.CallOption) *ExecutionIterator
CreateExecution(context.Context, *executionspb.CreateExecutionRequest, ...gax.CallOption) (*executionspb.Execution, error)
GetExecution(context.Context, *executionspb.GetExecutionRequest, ...gax.CallOption) (*executionspb.Execution, error)
CancelExecution(context.Context, *executionspb.CancelExecutionRequest, ...gax.CallOption) (*executionspb.Execution, error)
}
// Client is a client for interacting with Workflow Executions API.
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
//
// Executions is used to start and manage running instances of
// Workflows called executions.
type Client struct {
// The internal transport-dependent client.
internalClient internalClient
// The call options for this service.
CallOptions *CallOptions
}
// 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 *Client) 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 *Client) 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 *Client) Connection() *grpc.ClientConn {
return c.internalClient.Connection()
}
// ListExecutions returns a list of executions which belong to the workflow with
// the given name. The method returns executions of all workflow
// revisions. Returned executions are ordered by their start time (newest
// first).
func (c *Client) ListExecutions(ctx context.Context, req *executionspb.ListExecutionsRequest, opts ...gax.CallOption) *ExecutionIterator {
return c.internalClient.ListExecutions(ctx, req, opts...)
}
// CreateExecution creates a new execution using the latest revision of the given workflow.
func (c *Client) CreateExecution(ctx context.Context, req *executionspb.CreateExecutionRequest, opts ...gax.CallOption) (*executionspb.Execution, error) {
return c.internalClient.CreateExecution(ctx, req, opts...)
}
// GetExecution returns an execution of the given name.
func (c *Client) GetExecution(ctx context.Context, req *executionspb.GetExecutionRequest, opts ...gax.CallOption) (*executionspb.Execution, error) {
return c.internalClient.GetExecution(ctx, req, opts...)
}
// CancelExecution cancels an execution of the given name.
func (c *Client) CancelExecution(ctx context.Context, req *executionspb.CancelExecutionRequest, opts ...gax.CallOption) (*executionspb.Execution, error) {
return c.internalClient.CancelExecution(ctx, req, opts...)
}
// gRPCClient is a client for interacting with Workflow Executions API over gRPC transport.
//
// Methods, except Close, may be called concurrently. However, fields must not be modified concurrently with method calls.
type gRPCClient struct {
// Connection pool of gRPC connections to the service.
connPool gtransport.ConnPool
// Points back to the CallOptions field of the containing Client
CallOptions **CallOptions
// The gRPC API client.
client executionspb.ExecutionsClient
// The x-goog-* metadata to be sent with each request.
xGoogHeaders []string
}
// NewClient creates a new executions client based on gRPC.
// The returned client must be Closed when it is done being used to clean up its underlying connections.
//
// Executions is used to start and manage running instances of
// Workflows called executions.
func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error) {
clientOpts := defaultGRPCClientOptions()
if newClientHook != nil {
hookOpts, err := newClientHook(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 := Client{CallOptions: defaultCallOptions()}
c := &gRPCClient{
connPool: connPool,
client: executionspb.NewExecutionsClient(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 *gRPCClient) 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 *gRPCClient) 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 *gRPCClient) Close() error {
return c.connPool.Close()
}
func (c *gRPCClient) ListExecutions(ctx context.Context, req *executionspb.ListExecutionsRequest, opts ...gax.CallOption) *ExecutionIterator {
hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}
hds = append(c.xGoogHeaders, hds...)
ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
opts = append((*c.CallOptions).ListExecutions[0:len((*c.CallOptions).ListExecutions):len((*c.CallOptions).ListExecutions)], opts...)
it := &ExecutionIterator{}
req = proto.Clone(req).(*executionspb.ListExecutionsRequest)
it.InternalFetch = func(pageSize int, pageToken string) ([]*executionspb.Execution, string, error) {
resp := &executionspb.ListExecutionsResponse{}
if pageToken != "" {
req.PageToken = pageToken
}
if pageSize > math.MaxInt32 {
req.PageSize = math.MaxInt32
} else if pageSize != 0 {
req.PageSize = int32(pageSize)
}
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.client.ListExecutions(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, "", err
}
it.Response = resp
return resp.GetExecutions(), resp.GetNextPageToken(), 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)
it.pageInfo.MaxSize = int(req.GetPageSize())
it.pageInfo.Token = req.GetPageToken()
return it
}
func (c *gRPCClient) CreateExecution(ctx context.Context, req *executionspb.CreateExecutionRequest, opts ...gax.CallOption) (*executionspb.Execution, error) {
hds := []string{"x-goog-request-params", fmt.Sprintf("%s=%v", "parent", url.QueryEscape(req.GetParent()))}
hds = append(c.xGoogHeaders, hds...)
ctx = gax.InsertMetadataIntoOutgoingContext(ctx, hds...)
opts = append((*c.CallOptions).CreateExecution[0:len((*c.CallOptions).CreateExecution):len((*c.CallOptions).CreateExecution)], opts...)
var resp *executionspb.Execution
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.client.CreateExecution(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
func (c *gRPCClient) GetExecution(ctx context.Context, req *executionspb.GetExecutionRequest, opts ...gax.CallOption) (*executionspb.Execution, 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).GetExecution[0:len((*c.CallOptions).GetExecution):len((*c.CallOptions).GetExecution)], opts...)
var resp *executionspb.Execution
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.client.GetExecution(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
func (c *gRPCClient) CancelExecution(ctx context.Context, req *executionspb.CancelExecutionRequest, opts ...gax.CallOption) (*executionspb.Execution, 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).CancelExecution[0:len((*c.CallOptions).CancelExecution):len((*c.CallOptions).CancelExecution)], opts...)
var resp *executionspb.Execution
err := gax.Invoke(ctx, func(ctx context.Context, settings gax.CallSettings) error {
var err error
resp, err = c.client.CancelExecution(ctx, req, settings.GRPC...)
return err
}, opts...)
if err != nil {
return nil, err
}
return resp, nil
}
// ExecutionIterator manages a stream of *executionspb.Execution.
type ExecutionIterator struct {
items []*executionspb.Execution
pageInfo *iterator.PageInfo
nextFunc func() error
// Response is the raw response for the current page.
// It must be cast to the RPC response type.
// Calling Next() or InternalFetch() updates this value.
Response interface{}
// 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 []*executionspb.Execution, nextPageToken string, err error)
}
// PageInfo supports pagination. See the google.golang.org/api/iterator package for details.
func (it *ExecutionIterator) 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 *ExecutionIterator) Next() (*executionspb.Execution, error) {
var item *executionspb.Execution
if err := it.nextFunc(); err != nil {
return item, err
}
item = it.items[0]
it.items = it.items[1:]
return item, nil
}
func (it *ExecutionIterator) bufLen() int {
return len(it.items)
}
func (it *ExecutionIterator) takeBuf() interface{} {
b := it.items
it.items = nil
return b
}