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token_pool_created.go
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token_pool_created.go
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// 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 events
import (
"context"
"fmt"
"github.com/hyperledger/firefly-common/pkg/fftypes"
"github.com/hyperledger/firefly-common/pkg/log"
"github.com/hyperledger/firefly/internal/txcommon"
"github.com/hyperledger/firefly/pkg/blockchain"
"github.com/hyperledger/firefly/pkg/core"
"github.com/hyperledger/firefly/pkg/database"
"github.com/hyperledger/firefly/pkg/tokens"
)
func addPoolDetailsFromPlugin(ffPool *core.TokenPool, pluginPool *tokens.TokenPool) error {
ffPool.Type = pluginPool.Type
ffPool.Locator = pluginPool.PoolLocator
ffPool.PluginData = pluginPool.PluginData
ffPool.Connector = pluginPool.Connector
ffPool.Standard = pluginPool.Standard
ffPool.InterfaceFormat = (core.TokenInterfaceFormat)(pluginPool.InterfaceFormat)
ffPool.Decimals = pluginPool.Decimals
if pluginPool.TX.ID != nil {
ffPool.TX = pluginPool.TX
}
if pluginPool.Symbol != "" {
if ffPool.Symbol == "" {
ffPool.Symbol = pluginPool.Symbol
} else if ffPool.Symbol != pluginPool.Symbol {
return fmt.Errorf("token symbol '%s' from blockchain does not match stored symbol '%s'", pluginPool.Symbol, ffPool.Symbol)
}
}
ffPool.Info = pluginPool.Info
return nil
}
func (em *eventManager) confirmPool(ctx context.Context, pool *core.TokenPool, ev *blockchain.Event) error {
log.L(ctx).Debugf("Confirming token pool ID='%s' Locator='%s'", pool.ID, pool.Locator)
var blockchainID string
if ev != nil {
// Some pools will not include a blockchain event for creation (such as when indexing a pre-existing pool)
blockchainID = ev.BlockchainTXID
chainEvent := buildBlockchainEvent(pool.Namespace, nil, ev, &core.BlockchainTransactionRef{
ID: pool.TX.ID,
Type: pool.TX.Type,
BlockchainID: blockchainID,
})
if err := em.maybePersistBlockchainEvent(ctx, chainEvent, nil); err != nil {
return err
}
em.emitBlockchainEventMetric(ev)
}
if _, err := em.txHelper.PersistTransaction(ctx, pool.TX.ID, pool.TX.Type, blockchainID); err != nil {
return err
}
pool.Active = true
if err := em.database.UpsertTokenPool(ctx, pool, database.UpsertOptimizationExisting); err != nil {
return err
}
log.L(ctx).Infof("Token pool confirmed, id=%s", pool.ID)
event := core.NewEvent(core.EventTypePoolConfirmed, pool.Namespace, pool.ID, pool.TX.ID, pool.ID.String())
return em.database.InsertEvent(ctx, event)
}
func (em *eventManager) getPoolByIDOrLocator(ctx context.Context, id *fftypes.UUID, connector, locator string) (*core.TokenPool, error) {
if id != nil {
return em.assets.GetTokenPoolByID(ctx, id)
}
return em.assets.GetTokenPoolByLocator(ctx, connector, locator)
}
func (em *eventManager) loadExisting(ctx context.Context, pool *tokens.TokenPool) (existingPool *core.TokenPool, err error) {
if existingPool, err = em.getPoolByIDOrLocator(ctx, pool.ID, pool.Connector, pool.PoolLocator); err != nil || existingPool == nil {
log.L(ctx).Debugf("Pool not found with ns=%s connector=%s locator=%s (err=%v)", em.namespace.Name, pool.Connector, pool.PoolLocator, err)
return existingPool, err
}
if err = addPoolDetailsFromPlugin(existingPool, pool); err != nil {
log.L(ctx).Errorf("Error processing pool for transaction '%s' (%s) - ignoring", pool.TX.ID, err)
return nil, nil
}
return existingPool, nil
}
func (em *eventManager) loadFromOperation(ctx context.Context, pool *tokens.TokenPool) (stagedPool *core.TokenPool, err error) {
op, err := em.txHelper.FindOperationInTransaction(ctx, pool.TX.ID, core.OpTypeTokenCreatePool)
if err != nil {
return nil, err
} else if op == nil {
log.L(ctx).Debugf("No pool found for tx=%s status=%s", pool.TX.ID, core.OpTypeTokenCreatePool)
return nil, nil
}
stagedPool, err = txcommon.RetrieveTokenPoolCreateInputs(ctx, op)
if err != nil || stagedPool.ID == nil || stagedPool.Namespace == "" || stagedPool.Name == "" {
log.L(ctx).Errorf("Error loading pool info for transaction '%s' (%s) - ignoring: %v", pool.TX.ID, err, op.Input)
return nil, nil
}
if err = addPoolDetailsFromPlugin(stagedPool, pool); err != nil {
log.L(ctx).Errorf("Error processing pool for transaction '%s' (%s) - ignoring", pool.TX.ID, err)
return nil, nil
}
return stagedPool, nil
}
// It is expected that this method might be invoked twice for each pool, depending on the behavior of the connector.
// It will be at least invoked on the submitter when the pool is first created, to trigger the submitter to publish it.
// It will be invoked on every node (including the submitter) after the pool is published+activated, to trigger confirmation of the pool.
// When received in any other scenario, it should be ignored.
//
// The context passed to this callback is dependent on what phase it is called in.
// In the case that it is called synchronously on the submitter, in order to trigger the publish, the original context
// of the REST API will be propagated (so it can be used for the resolution of the org signing key).
func (em *eventManager) TokenPoolCreated(ctx context.Context, ti tokens.Plugin, pool *tokens.TokenPool) (err error) {
var msgIDforRewind *fftypes.UUID
var stagedPool *core.TokenPool
err = em.retry.Do(ctx, "persist token pool transaction", func(attempt int) (bool, error) {
err := em.database.RunAsGroup(ctx, func(ctx context.Context) error {
// See if this is the result of activating an existing pool
existingPool, err := em.loadExisting(ctx, pool)
if err != nil {
return err
}
if existingPool != nil {
if existingPool.Active {
log.L(ctx).Debugf("Token pool already active ID='%s' Locator='%s'", existingPool.ID, pool.PoolLocator)
return nil // already active
}
msgIDforRewind = existingPool.Message
return em.confirmPool(ctx, existingPool, pool.Event)
}
if pool.TX.ID == nil {
// Transaction ID is required if the pool doesn't exist yet
// (it can be omitted above when only activating)
log.L(ctx).Errorf("Invalid token pool transaction - ID is nil")
return nil // move on
}
// See if this pool was submitted locally and needs to be published
if stagedPool, err = em.loadFromOperation(ctx, pool); err != nil {
return err
} else if stagedPool != nil {
return nil // trigger publish after completion of database transaction
}
// Otherwise this event can be ignored
var protoID string
if pool.Event != nil {
protoID = pool.Event.ProtocolID
}
log.L(ctx).Debugf("Ignoring token pool created notification. No matching pool definition found Event='%s' Locator='%s'", protoID, pool.PoolLocator)
return nil
})
return err != nil, err
})
if err == nil {
// Initiate a rewind if a batch was potentially completed by the arrival of this transaction
if msgIDforRewind != nil {
em.aggregator.queueMessageRewind(msgIDforRewind)
}
if stagedPool != nil {
// If the pool is tied to a contract interface, resolve the methods to be used for later operations
if stagedPool.Interface != nil && stagedPool.Interface.ID != nil && stagedPool.InterfaceFormat != "" {
log.L(ctx).Infof("Querying token connector interface, id=%s", stagedPool.ID)
if err := em.assets.ResolvePoolMethods(ctx, stagedPool); err != nil {
return err
}
}
// Publish the details of the new token pool
// Other nodes will pass these details to their own token connector for validation/activation of the pool
log.L(ctx).Infof("Defining token pool, id=%s", stagedPool.ID)
err = em.defsender.DefineTokenPool(ctx, stagedPool, false)
}
}
return err
}