[FAB-7831] Move funcs that propagate SDK context

This change moves SDK provides to a context object
that can be passed around. This removes the need to expose
all methods directly from the SDK object.

The underlying FabricClient method is also refactored
into a smaller Resource interface to limit exposure
from the SDK. This work continues in upcoming
changes.

Change-Id: I9233fd6278683cd2b24a47c6d4c10032e75f7c5f
Signed-off-by: Troy Ronda <troy@troyronda.com>

Author: troyronda

Makefile

@@ -323,7 +323,7 @@ mock-gen:
 	mockgen -build_flags '$(GO_LDFLAGS_ARG)' github.com/hyperledger/fabric-sdk-go/api/apitxn ProposalProcessor | sed "s/github.com\/hyperledger\/fabric-sdk-go\/vendor\///g" | goimports > api/apitxn/mocks/mockapitxn.gen.go
 	mockgen -build_flags '$(GO_LDFLAGS_ARG)' github.com/hyperledger/fabric-sdk-go/api/apiconfig Config | sed "s/github.com\/hyperledger\/fabric-sdk-go\/vendor\///g" | goimports > api/apiconfig/mocks/mockconfig.gen.go
 	mockgen -build_flags '$(GO_LDFLAGS_ARG)' github.com/hyperledger/fabric-sdk-go/api/apifabca FabricCAClient | sed "s/github.com\/hyperledger\/fabric-sdk-go\/vendor\///g" | goimports > api/apifabca/mocks/mockfabriccaclient.gen.go
-	mockgen -build_flags '$(GO_LDFLAGS_ARG)' github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/api SDK,CoreProviderFactory,ServiceProviderFactory,OrgClientFactory,SessionClientFactory | sed "s/github.com\/hyperledger\/fabric-sdk-go\/vendor\///g" | goimports > pkg/fabsdk/api/mocks/mocksdkapi.gen.go
+	mockgen -build_flags '$(GO_LDFLAGS_ARG)' github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/api CoreProviders,SvcProviders,Providers,CoreProviderFactory,ServiceProviderFactory,OrgClientFactory,SessionClientFactory | sed "s/github.com\/hyperledger\/fabric-sdk-go\/vendor\///g" | goimports > pkg/fabsdk/api/mocks/mocksdkapi.gen.go
 
 # TODO - Add cryptogen
 .PHONY: channel-config-gen

api/apicore/fabric.go

@@ -10,14 +10,17 @@ import (
 	"crypto/x509"
 
 	"github.com/hyperledger/fabric-sdk-go/api/apiconfig"
+	"github.com/hyperledger/fabric-sdk-go/api/apifabca"
 	"github.com/hyperledger/fabric-sdk-go/api/apifabclient"
 )
 
-// FabricProvider allows overriding of fabric objects such as peer and user
+// FabricProvider enables access to fabric objects such as peer and user
 type FabricProvider interface {
-	NewClient(user apifabclient.User) (apifabclient.FabricClient, error)
+	NewChannelClient(user apifabclient.IdentityContext, name string) (apifabclient.Channel, error)
+	NewResourceClient(user apifabclient.IdentityContext) (apifabclient.Resource, error)
+	NewCAClient(orgID string) (apifabca.FabricCAClient, error)
+
 	NewPeer(url string, certificate *x509.Certificate, serverHostOverride string) (apifabclient.Peer, error)
 	NewPeerFromConfig(peerCfg *apiconfig.NetworkPeer) (apifabclient.Peer, error)
-	// EnrollUser(orgID, name, pwd string) (apifabca.User, error)
 	NewUser(name string, signingIdentity *apifabclient.SigningIdentity) (apifabclient.User, error)
 }

api/apifabclient/channel.go

@@ -52,7 +52,7 @@ type Channel interface {
 	OrganizationUnits() ([]string, error)
 
 	// Channel Info
-	GenesisBlock(request *GenesisBlockRequest) (*common.Block, error)
+	GenesisBlock() (*common.Block, error)
 	JoinChannel(request *JoinChannelRequest) error
 	UpdateChannel() bool
 	IsReadonly() bool
@@ -74,14 +74,8 @@ type OrgAnchorPeer struct {
 	Port int32
 }
 
-// GenesisBlockRequest ...
-type GenesisBlockRequest struct {
-	TxnID txn.TransactionID
-}
-
 // JoinChannelRequest allows a set of peers to transact on a channel on the network
 type JoinChannelRequest struct {
 	Targets      []Peer
 	GenesisBlock *common.Block
-	TxnID        txn.TransactionID
 }

api/apifabclient/fabricclient.go

@@ -14,7 +14,37 @@ import (
 	pb "github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/peer"
 )
 
-// FabricClient ...
+// Resource is a client that provides access to fabric resources such as chaincode.
+type Resource interface {
+	Context
+	client
+
+	// TODO refactor into channel provider and remove from Resource (upcoming CR)
+	NewChannel(name string) (Channel, error)
+	Channel(name string) Channel
+}
+
+type client interface {
+	CreateChannel(request CreateChannelRequest) (txn.TransactionID, error)
+	InstallChaincode(request InstallChaincodeRequest) ([]*txn.TransactionProposalResponse, string, error)
+	QueryInstalledChaincodes(peer Peer) (*pb.ChaincodeQueryResponse, error)
+	QueryChannels(peer Peer) (*pb.ChannelQueryResponse, error)
+
+	ExtractChannelConfig(configEnvelope []byte) ([]byte, error)
+	SignChannelConfig(config []byte, signer IdentityContext) (*common.ConfigSignature, error)
+}
+
+// Context supplies the configuration and signing identity to client objects.
+type Context interface {
+	SigningManager() SigningManager
+	Config() config.Config
+	CryptoSuite() apicryptosuite.CryptoSuite
+	IdentityContext() IdentityContext
+}
+
+// FabricClient provides access to infrastructure functionality.
+//
+// Deprecated: this interface has been renamed.
 /*
  * Main interaction handler with end user. A client instance provides a handler to interact
  * with a network of peers, orderers and optionally member services. An application using the
@@ -32,24 +62,14 @@ import (
  *
  */
 type FabricClient interface {
-	NewChannel(name string) (Channel, error)
-	Channel(name string) Channel
-	ExtractChannelConfig(configEnvelope []byte) ([]byte, error)
-	SignChannelConfig(config []byte, signer User) (*common.ConfigSignature, error)
-	CreateChannel(request CreateChannelRequest) (txn.TransactionID, error)
+	Resource
+
 	QueryChannelInfo(name string, peers []Peer) (Channel, error)
-	StateStore() KeyValueStore
-	SigningManager() SigningManager
-	CryptoSuite() apicryptosuite.CryptoSuite
-	SaveUserToStateStore(user User, skipPersistence bool) error
+
+	SetIdentityContext(identity IdentityContext)
+	SaveUserToStateStore(user User) error
 	LoadUserFromStateStore(name string) (User, error)
-	InstallChaincode(request InstallChaincodeRequest) ([]*txn.TransactionProposalResponse, string, error)
-	QueryChannels(peer Peer) (*pb.ChannelQueryResponse, error)
-	QueryInstalledChaincodes(peer Peer) (*pb.ChaincodeQueryResponse, error)
-	UserContext() User
-	SetUserContext(user User)
-	Config() config.Config // TODO: refactor to a fab client config interface
-	NewTxnID() (txn.TransactionID, error)
+	StateStore() KeyValueStore
 }
 
 // CreateChannelRequest requests channel creation on the network

api/apifabclient/identity.go

@@ -23,10 +23,18 @@ import "github.com/hyperledger/fabric-sdk-go/api/apicryptosuite"
 // An application cannot use the Peer identity to sign things because the application doesn’t
 // have access to the Peer identity’s private key.
 type User interface {
+	IdentityContext
+
 	Name() string
-	MspID() string
 	EnrollmentCertificate() []byte
-	PrivateKey() apicryptosuite.Key
 	Roles() []string
+}
+
+// IdentityContext supplies the serialized identity and key reference.
+//
+// TODO - refactor SigningIdentity and this interface.
+type IdentityContext interface {
+	MspID() string
 	Identity() ([]byte, error)
+	PrivateKey() apicryptosuite.Key
 }

api/apitxn/chmgmtclient/chmgmt.go

@@ -15,7 +15,7 @@ type SaveChannelRequest struct {
 	// Path to channel configuration file
 	ChannelConfig string
 	// User that signs channel configuration
-	SigningUser fab.User
+	SigningIdentity fab.IdentityContext
 }
 
 // SaveChannelOpts contains options for saving channel

def/factory/defclient/sessfactory.go

@@ -33,29 +33,21 @@ func NewSessionClientFactory() *SessionClientFactory {
 	return &f
 }
 
-/*
-// NewSystemClient returns a new FabricClient.
-// TODO: duplicate of core factory method or rename?
-func (f *SessionClientFactory) NewSystemClient(sdk apisdk.SDK, session apisdk.Session, config apiconfig.Config) (fab.FabricClient, error) {
-	return sdk.FabricProvider().NewClient(session.Identity())
-}
-*/
-
 // NewChannelMgmtClient returns a client that manages channels (create/join channel)
-func (f *SessionClientFactory) NewChannelMgmtClient(sdk apisdk.SDK, session apisdk.Session, config apiconfig.Config) (chmgmt.ChannelMgmtClient, error) {
+func (f *SessionClientFactory) NewChannelMgmtClient(sdk apisdk.Providers, session apisdk.Session, config apiconfig.Config) (chmgmt.ChannelMgmtClient, error) {
 	// For now settings are the same as for system client
-	client, err := sdk.FabricProvider().NewClient(session.Identity())
+	client, err := sdk.FabricProvider().NewResourceClient(session.Identity())
 	if err != nil {
 		return nil, err
 	}
 	return chmgmtImpl.NewChannelMgmtClient(client, config)
 }
 
 // NewResourceMgmtClient returns a client that manages resources
-func (f *SessionClientFactory) NewResourceMgmtClient(sdk apisdk.SDK, session apisdk.Session, config apiconfig.Config, filter resmgmt.TargetFilter) (resmgmt.ResourceMgmtClient, error) {
+func (f *SessionClientFactory) NewResourceMgmtClient(sdk apisdk.Providers, session apisdk.Session, config apiconfig.Config, filter resmgmt.TargetFilter) (resmgmt.ResourceMgmtClient, error) {
 
 	// For now settings are the same as for system client
-	client, err := sdk.FabricProvider().NewClient(session.Identity())
+	client, err := sdk.FabricProvider().NewResourceClient(session.Identity())
 	if err != nil {
 		return nil, err
 	}
@@ -70,13 +62,13 @@ func (f *SessionClientFactory) NewResourceMgmtClient(sdk apisdk.SDK, session api
 
 // NewChannelClient returns a client that can execute transactions on specified channel
 // TODO - better refactoring for testing and/or extract getChannelImpl to another package
-func (f *SessionClientFactory) NewChannelClient(sdk apisdk.SDK, session apisdk.Session, config apiconfig.Config, channelID string) (apitxn.ChannelClient, error) {
+func (f *SessionClientFactory) NewChannelClient(sdk apisdk.Providers, session apisdk.Session, config apiconfig.Config, channelID string) (apitxn.ChannelClient, error) {
 	// TODO: Add capablity to override sdk's selection and discovery provider
 
 	client := clientImpl.NewClient(sdk.ConfigProvider())
 	client.SetCryptoSuite(sdk.CryptoSuiteProvider())
 	client.SetStateStore(sdk.StateStoreProvider())
-	client.SetUserContext(session.Identity())
+	client.SetIdentityContext(session.Identity())
 	client.SetSigningManager(sdk.SigningManager())
 
 	channel, err := getChannel(client, channelID)
@@ -103,7 +95,7 @@ func (f *SessionClientFactory) NewChannelClient(sdk apisdk.SDK, session apisdk.S
 }
 
 // getChannel is helper method to initializes and returns a channel based on config
-func getChannel(client fab.FabricClient, channelID string) (fab.Channel, error) {
+func getChannel(client fab.Resource, channelID string) (fab.Channel, error) {
 
 	channel, err := client.NewChannel(channelID)
 	if err != nil {
@@ -135,7 +127,7 @@ func getChannel(client fab.FabricClient, channelID string) (fab.Channel, error)
 	return channel, nil
 }
 
-func getEventHub(client fab.FabricClient, channelID string, session apisdk.Session) (*events.EventHub, error) {
+func getEventHub(client fab.Resource, channelID string, session apisdk.Session) (*events.EventHub, error) {
 
 	peerConfig, err := client.Config().ChannelPeers(channelID)
 	if err != nil {

def/factory/defclient/sessfactory_test.go

@@ -26,37 +26,12 @@ import (
 	mockapisdk "github.com/hyperledger/fabric-sdk-go/pkg/fabsdk/api/mocks"
 )
 
-/*
-func TestNewSystemClient(t *testing.T) {
-	p := newMockProviders(t)
-
-	mockCtrl := gomock.NewController(t)
-	defer mockCtrl.Finish()
-	mockSDK := mock_context.NewMockSDK(mockCtrl)
-
-	mockSDK.EXPECT().FabricProvider().Return(p.FabricProvider)
-
-	factory := NewSessionClientFactory()
-	session := newMockSession()
-
-	client, err := factory.NewSystemClient(mockSDK, session, p.ConfigProvider)
-	if err != nil {
-		t.Fatalf("Unexpected error creating system client %v", err)
-	}
-
-	_, ok := client.(*clientImpl.Client)
-	if !ok {
-		t.Fatalf("Unexpected client created")
-	}
-}
-*/
-
 func TestNewChannelMgmtClient(t *testing.T) {
 	p := newMockProviders(t)
 
 	mockCtrl := gomock.NewController(t)
 	defer mockCtrl.Finish()
-	mockSDK := mockapisdk.NewMockSDK(mockCtrl)
+	mockSDK := mockapisdk.NewMockProviders(mockCtrl)
 
 	mockSDK.EXPECT().FabricProvider().Return(p.FabricProvider)
 
@@ -79,7 +54,7 @@ func TestNewResourceMgmtClient(t *testing.T) {
 
 	mockCtrl := gomock.NewController(t)
 	defer mockCtrl.Finish()
-	mockSDK := mockapisdk.NewMockSDK(mockCtrl)
+	mockSDK := mockapisdk.NewMockProviders(mockCtrl)
 
 	mockSDK.EXPECT().FabricProvider().Return(p.FabricProvider)
 	mockSDK.EXPECT().DiscoveryProvider().Return(p.DiscoveryProvider)
@@ -103,7 +78,7 @@ func TestNewChannelClient(t *testing.T) {
 
 	mockCtrl := gomock.NewController(t)
 	defer mockCtrl.Finish()
-	mockSDK := mockapisdk.NewMockSDK(mockCtrl)
+	mockSDK := mockapisdk.NewMockProviders(mockCtrl)
 
 	mockSDK.EXPECT().ConfigProvider().Return(p.ConfigProvider)
 	mockSDK.EXPECT().CryptoSuiteProvider().Return(p.CryptosuiteProvider)
@@ -131,7 +106,7 @@ func TestNewChannelClientBadChannel(t *testing.T) {
 
 	mockCtrl := gomock.NewController(t)
 	defer mockCtrl.Finish()
-	mockSDK := mockapisdk.NewMockSDK(mockCtrl)
+	mockSDK := mockapisdk.NewMockProviders(mockCtrl)
 
 	mockSDK.EXPECT().ConfigProvider().Return(p.ConfigProvider)
 	mockSDK.EXPECT().CryptoSuiteProvider().Return(p.CryptosuiteProvider)
@@ -152,7 +127,7 @@ func TestNewChannelClientBadOrg(t *testing.T) {
 
 	mockCtrl := gomock.NewController(t)
 	defer mockCtrl.Finish()
-	mockSDK := mockapisdk.NewMockSDK(mockCtrl)
+	mockSDK := mockapisdk.NewMockProviders(mockCtrl)
 
 	mockSDK.EXPECT().ConfigProvider().Return(p.ConfigProvider)
 	mockSDK.EXPECT().CryptoSuiteProvider().Return(p.CryptosuiteProvider)
@@ -170,7 +145,7 @@ func TestNewChannelClientBadOrg(t *testing.T) {
 	}
 }
 
-func getChannelMock(client apifabclient.FabricClient, channelID string) (apifabclient.Channel, error) {
+func getChannelMock(client apifabclient.Resource, channelID string) (apifabclient.Channel, error) {
 	return channel.NewChannel("channel", client)
 }
 
@@ -235,7 +210,7 @@ func newMockProviders(t *testing.T) *mockProviders {
 }
 
 type mockSession struct {
-	user apifabclient.User
+	user apifabclient.IdentityContext
 }
 
 func newMockSession() *mockSession {
@@ -250,6 +225,6 @@ func newMockSessionWithUser(username, mspID string) *mockSession {
 	return &session
 }
 
-func (s *mockSession) Identity() apifabclient.User {
+func (s *mockSession) Identity() apifabclient.IdentityContext {
 	return s.user
 }

def/provider/fabpvdr/fabpvdr.go

@@ -15,6 +15,7 @@ import (
 	"github.com/hyperledger/fabric-sdk-go/api/apifabclient"
 	fabricCAClient "github.com/hyperledger/fabric-sdk-go/pkg/fabric-ca-client"
 	clientImpl "github.com/hyperledger/fabric-sdk-go/pkg/fabric-client"
+	channelImpl "github.com/hyperledger/fabric-sdk-go/pkg/fabric-client/channel"
 	identityImpl "github.com/hyperledger/fabric-sdk-go/pkg/fabric-client/identity"
 	peerImpl "github.com/hyperledger/fabric-sdk-go/pkg/fabric-client/peer"
 )
@@ -38,13 +39,13 @@ func NewFabricProvider(config apiconfig.Config, stateStore apifabclient.KeyValue
 	return &f
 }
 
-// NewClient returns a new FabricClient initialized for the current instance of the SDK
-func (f *FabricProvider) NewClient(user apifabclient.User) (apifabclient.FabricClient, error) {
+// NewResourceClient returns a new client initialized for the current instance of the SDK
+func (f *FabricProvider) NewResourceClient(ic apifabclient.IdentityContext) (apifabclient.Resource, error) {
 	client := clientImpl.NewClient(f.config)
 
 	client.SetCryptoSuite(f.cryptoSuite)
 	client.SetStateStore(f.stateStore)
-	client.SetUserContext(user)
+	client.SetIdentityContext(ic)
 	client.SetSigningManager(f.signer)
 
 	return client, nil
@@ -76,6 +77,18 @@ func (f *FabricProvider) NewPeerFromConfig(peerCfg *apiconfig.NetworkPeer) (apif
 	return peerImpl.New(f.config, peerImpl.FromPeerConfig(peerCfg))
 }
 
+// NewChannelClient returns a new client initialized for the current instance of the SDK
+func (f *FabricProvider) NewChannelClient(ic apifabclient.IdentityContext, name string) (apifabclient.Channel, error) {
+	client := clientImpl.NewClient(f.config)
+
+	client.SetCryptoSuite(f.cryptoSuite)
+	client.SetStateStore(f.stateStore)
+	client.SetIdentityContext(ic)
+	client.SetSigningManager(f.signer)
+
+	return channelImpl.NewChannel(name, client)
+}
+
 /*
 TODO: Unclear that this EnrollUser helper is really needed at this level - I think not.
 Note: I renamed NewPreEnrolledUser to NewUser; and the old NewUser to EnrollUser