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Signed-off-by: Dzianis Andreyenka <andreenkodn@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,217 @@ | ||
| // Copyright © 2023 Kaleido, Inc. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // | ||
| // 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 tezos | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/go-resty/resty/v2" | ||
| "github.com/hyperledger/firefly-common/pkg/ffresty" | ||
| "github.com/hyperledger/firefly/internal/cache" | ||
| "github.com/hyperledger/firefly/internal/coremsgs" | ||
| ) | ||
|
|
||
| type streamManager struct { | ||
| client *resty.Client | ||
| cache cache.CInterface | ||
| batchSize uint | ||
| batchTimeout uint | ||
| } | ||
|
|
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| type eventStream struct { | ||
| ID string `json:"id"` | ||
| Name string `json:"name"` | ||
| ErrorHandling string `json:"errorHandling"` | ||
| BatchSize uint `json:"batchSize"` | ||
| BatchTimeoutMS uint `json:"batchTimeoutMS"` | ||
| Type string `json:"type"` | ||
| WebSocket eventStreamWebsocket `json:"websocket"` | ||
| Timestamps bool `json:"timestamps"` | ||
| } | ||
|
|
||
| type subscription struct { | ||
| ID string `json:"id"` | ||
| Name string `json:"name,omitempty"` | ||
| Stream string `json:"stream"` | ||
| FromBlock string `json:"fromBlock"` | ||
| TezosCompatAddress string `json:"address,omitempty"` | ||
| // EthCompatEvent *abi.Entry `json:"event,omitempty"` | ||
| // Filters []fftypes.JSONAny `json:"filters"` | ||
| // subscriptionCheckpoint | ||
| } | ||
|
|
||
| func newStreamManager(client *resty.Client, cache cache.CInterface, batchSize, batchTimeout uint) *streamManager { | ||
| return &streamManager{ | ||
| client: client, | ||
| cache: cache, | ||
| batchSize: batchSize, | ||
| batchTimeout: batchTimeout, | ||
| } | ||
| } | ||
|
|
||
| func (s *streamManager) getEventStreams(ctx context.Context) (streams []*eventStream, err error) { | ||
| res, err := s.client.R(). | ||
| SetContext(ctx). | ||
| SetResult(&streams). | ||
| Get("/eventstreams") | ||
| if err != nil || !res.IsSuccess() { | ||
| return nil, ffresty.WrapRestErr(ctx, res, err, coremsgs.MsgTezosconnectRESTErr) | ||
| } | ||
| return streams, nil | ||
| } | ||
|
|
||
| func buildEventStream(topic string, batchSize, batchTimeout uint) *eventStream { | ||
| return &eventStream{ | ||
| Name: topic, | ||
| ErrorHandling: "block", | ||
| BatchSize: batchSize, | ||
| BatchTimeoutMS: batchTimeout, | ||
| Type: "websocket", | ||
| // Some implementations require a "topic" to be set separately, while others rely only on the name. | ||
| // We set them to the same thing for cross compatibility. | ||
| WebSocket: eventStreamWebsocket{Topic: topic}, | ||
| Timestamps: true, | ||
| } | ||
| } | ||
|
|
||
| func (s *streamManager) createEventStream(ctx context.Context, topic string) (*eventStream, error) { | ||
| stream := buildEventStream(topic, s.batchSize, s.batchTimeout) | ||
| res, err := s.client.R(). | ||
| SetContext(ctx). | ||
| SetBody(stream). | ||
| SetResult(stream). | ||
| Post("/eventstreams") | ||
| if err != nil || !res.IsSuccess() { | ||
| return nil, ffresty.WrapRestErr(ctx, res, err, coremsgs.MsgTezosconnectRESTErr) | ||
| } | ||
| return stream, nil | ||
| } | ||
|
|
||
| func (s *streamManager) updateEventStream(ctx context.Context, topic string, batchSize, batchTimeout uint, eventStreamID string) (*eventStream, error) { | ||
| stream := buildEventStream(topic, batchSize, batchTimeout) | ||
| res, err := s.client.R(). | ||
| SetContext(ctx). | ||
| SetBody(stream). | ||
| SetResult(stream). | ||
| Patch("/eventstreams/" + eventStreamID) | ||
| if err != nil || !res.IsSuccess() { | ||
| return nil, ffresty.WrapRestErr(ctx, res, err, coremsgs.MsgTezosconnectRESTErr) | ||
| } | ||
| return stream, nil | ||
| } | ||
|
|
||
| func (s *streamManager) ensureEventStream(ctx context.Context, topic string) (*eventStream, error) { | ||
| existingStreams, err := s.getEventStreams(ctx) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| for _, stream := range existingStreams { | ||
| if stream.Name == topic { | ||
| stream, err = s.updateEventStream(ctx, topic, s.batchSize, s.batchTimeout, stream.ID) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return stream, nil | ||
| } | ||
| } | ||
| return s.createEventStream(ctx, topic) | ||
| } | ||
|
|
||
| func (s *streamManager) getSubscriptions(ctx context.Context) (subs []*subscription, err error) { | ||
| res, err := s.client.R(). | ||
| SetContext(ctx). | ||
| SetResult(&subs). | ||
| Get("/subscriptions") | ||
| if err != nil || !res.IsSuccess() { | ||
| return nil, ffresty.WrapRestErr(ctx, res, err, coremsgs.MsgTezosconnectRESTErr) | ||
| } | ||
| return subs, nil | ||
| } | ||
|
|
||
| func (s *streamManager) getSubscription(ctx context.Context, subID string, okNotFound bool) (sub *subscription, err error) { | ||
| res, err := s.client.R(). | ||
| SetContext(ctx). | ||
| SetResult(&sub). | ||
| Get(fmt.Sprintf("/subscriptions/%s", subID)) | ||
| if err != nil || !res.IsSuccess() { | ||
| if okNotFound && res.StatusCode() == 404 { | ||
| return nil, nil | ||
| } | ||
| return nil, ffresty.WrapRestErr(ctx, res, err, coremsgs.MsgTezosconnectRESTErr) | ||
| } | ||
| return sub, nil | ||
| } | ||
|
|
||
| func (s *streamManager) getSubscriptionName(ctx context.Context, subID string) (string, error) { | ||
| if cachedValue := s.cache.GetString("sub:" + subID); cachedValue != "" { | ||
| return cachedValue, nil | ||
| } | ||
| sub, err := s.getSubscription(ctx, subID, false) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| s.cache.SetString("sub:"+subID, sub.Name) | ||
| return sub.Name, nil | ||
| } | ||
|
|
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| // func (s *streamManager) createSubscription(ctx context.Context, location *Location, stream, name, event, fromBlock string) (*subscription, error) { | ||
| // // Map FireFly "firstEvent" values to Tezos "fromBlock" values | ||
| // switch fromBlock { | ||
| // case string(core.SubOptsFirstEventOldest): | ||
| // fromBlock = "0" | ||
| // case string(core.SubOptsFirstEventNewest): | ||
| // fromBlock = "latest" | ||
| // } | ||
| // sub := subscription{ | ||
| // Name: name, | ||
| // Stream: stream, | ||
| // FromBlock: fromBlock, | ||
| // // EthCompatEvent: abi, | ||
| // } | ||
|
|
||
| // if location != nil { | ||
| // sub.TezosCompatAddress = location.Address | ||
| // } | ||
|
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| // res, err := s.client.R(). | ||
| // SetContext(ctx). | ||
| // SetBody(&sub). | ||
| // SetResult(&sub). | ||
| // Post("/subscriptions") | ||
| // if err != nil || !res.IsSuccess() { | ||
| // return nil, ffresty.WrapRestErr(ctx, res, err, coremsgs.MsgTezosconnectRESTErr) | ||
| // } | ||
| // return &sub, nil | ||
| // } | ||
|
|
||
| func (s *streamManager) deleteSubscription(ctx context.Context, subID string, okNotFound bool) error { | ||
| res, err := s.client.R(). | ||
| SetContext(ctx). | ||
| Delete("/subscriptions/" + subID) | ||
| if err != nil || !res.IsSuccess() { | ||
| if okNotFound && res.StatusCode() == 404 { | ||
| return nil | ||
| } | ||
| return ffresty.WrapRestErr(ctx, res, err, coremsgs.MsgTezosconnectRESTErr) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // func (s *streamManager) ensureFireFlySubscription(ctx context.Context, namespace string, version int, instancePath, fromBlock, stream, event string) (sub *subscription, err error) { | ||
| // return nil, nil | ||
| // } |
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