pulumi/pkg/resource/deploy/deploytest/callbacks.go

123 lines
3.2 KiB
Go

// Copyright 2016-2023, Pulumi Corporation.
//
// 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
//
// http://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.
package deploytest
import (
"context"
"fmt"
"github.com/google/uuid"
"github.com/pulumi/pulumi/sdk/v3/go/common/resource"
"github.com/pulumi/pulumi/sdk/v3/go/common/resource/plugin"
"github.com/pulumi/pulumi/sdk/v3/go/common/util/rpcutil"
pulumirpc "github.com/pulumi/pulumi/sdk/v3/proto/go"
"google.golang.org/grpc"
"google.golang.org/protobuf/types/known/structpb"
)
func NewCallbacksServer() (*CallbackServer, error) {
callbackServer := &CallbackServer{
callbacks: make(map[string]func(args []resource.PropertyValue) ([]resource.PropertyValue, error)),
stop: make(chan bool),
}
handle, err := rpcutil.ServeWithOptions(rpcutil.ServeOptions{
Cancel: callbackServer.stop,
Init: func(srv *grpc.Server) error {
pulumirpc.RegisterCallbacksServer(srv, callbackServer)
return nil
},
Options: rpcutil.OpenTracingServerInterceptorOptions(nil),
})
if err != nil {
return nil, fmt.Errorf("could not start resource provider service: %w", err)
}
callbackServer.handle = handle
return callbackServer, nil
}
type CallbackServer struct {
pulumirpc.UnsafeCallbacksServer
stop chan bool
handle rpcutil.ServeHandle
callbacks map[string]func(args []resource.PropertyValue) ([]resource.PropertyValue, error)
}
func (s *CallbackServer) Close() error {
s.stop <- true
return <-s.handle.Done
}
func (s *CallbackServer) Allocate(
callback func(args []resource.PropertyValue,
) ([]resource.PropertyValue, error),
) (*pulumirpc.Callback, error) {
token := uuid.NewString()
s.callbacks[token] = callback
return &pulumirpc.Callback{
Target: fmt.Sprintf("127.0.0.1:%d", s.handle.Port),
Token: token,
}, nil
}
func (s *CallbackServer) Invoke(
ctx context.Context, req *pulumirpc.CallbackInvokeRequest,
) (*pulumirpc.CallbackInvokeResponse, error) {
callback, ok := s.callbacks[req.Token]
if !ok {
return nil, nil
}
args := make([]resource.PropertyValue, len(req.Arguments))
for i, arg := range req.Arguments {
v, err := plugin.UnmarshalPropertyValue("Arguments", arg, plugin.MarshalOptions{
KeepUnknowns: true,
KeepSecrets: true,
KeepResources: true,
KeepOutputValues: true,
})
if err != nil {
return nil, err
}
args[i] = *v
}
result, err := callback(args)
if err != nil {
return nil, err
}
resp := &pulumirpc.CallbackInvokeResponse{
Returns: make([]*structpb.Value, len(result)),
}
for i, ret := range result {
v, err := plugin.MarshalPropertyValue("Returns", ret, plugin.MarshalOptions{
KeepUnknowns: true,
KeepSecrets: true,
KeepResources: true,
KeepOutputValues: true,
})
if err != nil {
return nil, err
}
resp.Returns[i] = v
}
return resp, nil
}