[FAB-10029] Extend committer API to get coll. conf.

Add new function to the Committer interface to expose capablity of
acquiring collections configuration based on chaincode namespace and the
ledger height.

Change-Id: I3cb9b039895503992375e4675c87fd85a1894ce8
Signed-off-by: Artem Barger <bartem@il.ibm.com>

Author: C0rWin

core/committer/committer.go

@@ -48,6 +48,9 @@ type Committer interface {
 	// Gets blocks with sequence numbers provided in the slice
 	GetBlocks(blockSeqs []uint64) []*common.Block
 
+	// GetConfigHistoryRetriever returns the ConfigHistoryRetriever
+	GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error)
+
 	// Closes committing service
 	Close()
 }

core/committer/committer_impl.go

@@ -50,6 +50,8 @@ type PeerLedgerSupport interface {
 
 	GetBlockByNumber(blockNumber uint64) (*common.Block, error)
 
+	GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error)
+
 	Close()
 }
 

core/committer/committer_test.go

@@ -32,6 +32,11 @@ type mockLedger struct {
 	mock.Mock
 }
 
+func (m *mockLedger) GetConfigHistoryRetriever() (ledger2.ConfigHistoryRetriever, error) {
+	args := m.Called()
+	return args.Get(0).(ledger2.ConfigHistoryRetriever), args.Error(1)
+}
+
 func (m *mockLedger) GetBlockchainInfo() (*common.BlockchainInfo, error) {
 	info := &common.BlockchainInfo{
 		Height:            m.height,

gossip/privdata/coordinator_test.go

@@ -163,6 +163,11 @@ type committerMock struct {
 	mock.Mock
 }
 
+func (mock *committerMock) GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error) {
+	args := mock.Called()
+	return args.Get(0).(ledger.ConfigHistoryRetriever), args.Error(1)
+}
+
 func (mock *committerMock) GetPvtDataByNum(blockNum uint64, filter ledger.PvtNsCollFilter) ([]*ledger.TxPvtData, error) {
 	args := mock.Called(blockNum, filter)
 	return args.Get(0).([]*ledger.TxPvtData), args.Error(1)

gossip/privdata/dataretriever.go

@@ -33,6 +33,9 @@ type DataStore interface {
 	// collections and namespaces of private data to retrieve
 	GetPvtDataByNum(blockNum uint64, filter ledger.PvtNsCollFilter) ([]*ledger.TxPvtData, error)
 
+	// GetConfigHistoryRetriever returns the ConfigHistoryRetriever
+	GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error)
+
 	// Get recent block sequence number
 	LedgerHeight() (uint64, error)
 }

gossip/privdata/dataretriever_test.go

@@ -22,6 +22,11 @@ type mockedDataStore struct {
 	mock.Mock
 }
 
+func (ds *mockedDataStore) GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error) {
+	args := ds.Called()
+	return args.Get(0).(ledger.ConfigHistoryRetriever), args.Error(1)
+}
+
 func (ds *mockedDataStore) GetTxPvtRWSetByTxid(txid string, filter ledger.PvtNsCollFilter) (transientstore.RWSetScanner, error) {
 	args := ds.Called(txid, filter)
 	return args.Get(0).(transientstore.RWSetScanner), args.Error(1)

gossip/service/gossip_service_test.go

@@ -338,6 +338,10 @@ type mockLedgerInfo struct {
 	Height uint64
 }
 
+func (li *mockLedgerInfo) GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error) {
+	panic("implement me")
+}
+
 func (li *mockLedgerInfo) GetPvtDataByNum(blockNum uint64, filter ledger.PvtNsCollFilter) ([]*ledger.TxPvtData, error) {
 	panic("implement me")
 }

gossip/state/state_test.go

@@ -197,6 +197,11 @@ type mockCommitter struct {
 	sync.Mutex
 }
 
+func (mc *mockCommitter) GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error) {
+	args := mc.Called()
+	return args.Get(0).(ledger.ConfigHistoryRetriever), args.Error(1)
+}
+
 func (mc *mockCommitter) GetPvtDataByNum(blockNum uint64, filter ledger.PvtNsCollFilter) ([]*ledger.TxPvtData, error) {
 	args := mc.Called(blockNum, filter)
 	return args.Get(0).([]*ledger.TxPvtData), args.Error(1)
@@ -241,6 +246,10 @@ type ramLedger struct {
 	sync.RWMutex
 }
 
+func (mock *ramLedger) GetConfigHistoryRetriever() (ledger.ConfigHistoryRetriever, error) {
+	panic("implement me")
+}
+
 func (mock *ramLedger) GetPvtDataAndBlockByNum(blockNum uint64, filter ledger.PvtNsCollFilter) (*ledger.BlockAndPvtData, error) {
 	mock.RLock()
 	defer mock.RUnlock()