Implement monorepo layout
Implemented the nexantic monorepo.
Smalltown code was moved to `core`. From now on all code will live in top level directories named after the projects with the exception for general purpose libraries which should go to `<lang>libs`.
General build and utility folders are underscore prefixed.
The repo name will from now on be rNXT (nexantic). I think this change makes sense since components in this repo will not all be part of Smalltown, the Smalltown brand has been claimed by Signon GmbH so we need to change it anyway and the longer we wait the harder it will be to change/move it.
Test Plan: Launched Smalltown using `./scripts/bin/bazel run //core/scripts:launch`
X-Origin-Diff: phab/D210
GitOrigin-RevId: fa5a7f08143d2ead2cb7206b4c63ab641794162c
diff --git a/core/internal/api/BUILD.bazel b/core/internal/api/BUILD.bazel
new file mode 100644
index 0000000..6e3cb2b
--- /dev/null
+++ b/core/internal/api/BUILD.bazel
@@ -0,0 +1,20 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+ name = "go_default_library",
+ srcs = [
+ "cluster.go",
+ "main.go",
+ "setup.go",
+ ],
+ importpath = "git.monogon.dev/source/nexantic.git/core/internal/api",
+ visibility = ["//core:__subpackages__"],
+ deps = [
+ "//core/api/api:go_default_library",
+ "//core/internal/common:go_default_library",
+ "//core/internal/consensus:go_default_library",
+ "@com_github_casbin_casbin//:go_default_library",
+ "@org_golang_google_grpc//:go_default_library",
+ "@org_uber_go_zap//:go_default_library",
+ ],
+)
diff --git a/core/internal/api/cluster.go b/core/internal/api/cluster.go
new file mode 100644
index 0000000..32a5691
--- /dev/null
+++ b/core/internal/api/cluster.go
@@ -0,0 +1,117 @@
+// Copyright 2020 The Monogon Project Authors.
+//
+// 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 api
+
+import (
+ "context"
+ "crypto/rand"
+ "encoding/hex"
+ "fmt"
+ schema "git.monogon.dev/source/nexantic.git/core/generated/api"
+ "git.monogon.dev/source/nexantic.git/core/internal/common"
+
+ "errors"
+
+ "go.uber.org/zap"
+)
+
+var (
+ ErrAttestationFailed = errors.New("attestation_failed")
+)
+
+func (s *Server) AddNode(ctx context.Context, req *schema.AddNodeRequest) (*schema.AddNodeResponse, error) {
+ // Setup API client
+ c, err := common.NewSmalltownAPIClient(fmt.Sprintf("%s:%d", req.Host, req.ApiPort))
+ if err != nil {
+ return nil, err
+ }
+
+ // Check attestation
+ nonce := make([]byte, 20)
+ _, err = rand.Read(nonce)
+ if err != nil {
+ return nil, err
+ }
+ hexNonce := hex.EncodeToString(nonce)
+
+ aRes, err := c.Setup.Attest(ctx, &schema.AttestRequest{
+ Challenge: hexNonce,
+ })
+ if err != nil {
+ return nil, err
+ }
+
+ //TODO(hendrik): Verify response
+ if aRes.Response != hexNonce {
+ return nil, ErrAttestationFailed
+ }
+
+ // Provision cluster info locally
+ memberID, err := s.consensusService.AddMember(ctx, req.Name, fmt.Sprintf("http://%s:%d", req.Host, req.ConsensusPort))
+ if err != nil {
+ return nil, err
+ }
+
+ s.Logger.Info("Added new node to consensus cluster; provisioning external node now",
+ zap.String("host", req.Host), zap.Uint32("port", req.ApiPort),
+ zap.Uint32("consensus_port", req.ConsensusPort), zap.String("name", req.Name))
+
+ // Provision cluster info externally
+ _, err = c.Setup.ProvisionCluster(ctx, &schema.ProvisionClusterRequest{
+ InitialCluster: s.consensusService.GetInitialClusterString(),
+ ProvisioningToken: req.Token,
+ ExternalHost: req.Host,
+ NodeName: req.Name,
+ TrustBackend: req.TrustBackend,
+ })
+ if err != nil {
+ // Revert Consensus add member - might fail if consensus cannot be established
+ err2 := s.consensusService.RemoveMember(ctx, memberID)
+ if err2 != nil {
+ return nil, fmt.Errorf("Rollback failed after failed provisioning; err=%v; err_rb=%v", err, err2)
+ }
+ return nil, err
+ }
+ s.Logger.Info("Fully provisioned new node",
+ zap.String("host", req.Host), zap.Uint32("port", req.ApiPort),
+ zap.Uint32("consensus_port", req.ConsensusPort), zap.String("name", req.Name),
+ zap.Uint64("member_id", memberID))
+
+ return &schema.AddNodeResponse{}, nil
+}
+
+func (s *Server) RemoveNode(context.Context, *schema.RemoveNodeRequest) (*schema.RemoveNodeRequest, error) {
+ panic("implement me")
+}
+
+func (s *Server) GetNodes(context.Context, *schema.GetNodesRequest) (*schema.GetNodesResponse, error) {
+ nodes := s.consensusService.GetNodes()
+ resNodes := make([]*schema.Node, len(nodes))
+
+ for i, node := range nodes {
+ resNodes[i] = &schema.Node{
+ Id: node.ID,
+ Name: node.Name,
+ Address: node.Address,
+ Synced: node.Synced,
+ }
+ }
+
+ return &schema.GetNodesResponse{
+ Nodes: resNodes,
+ }, nil
+}
diff --git a/core/internal/api/main.go b/core/internal/api/main.go
new file mode 100644
index 0000000..20c3a3a
--- /dev/null
+++ b/core/internal/api/main.go
@@ -0,0 +1,87 @@
+// Copyright 2020 The Monogon Project Authors.
+//
+// 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 api
+
+import (
+ "fmt"
+ schema "git.monogon.dev/source/nexantic.git/core/generated/api"
+ "git.monogon.dev/source/nexantic.git/core/internal/common"
+ "git.monogon.dev/source/nexantic.git/core/internal/consensus"
+ "github.com/casbin/casbin"
+ "go.uber.org/zap"
+ "google.golang.org/grpc"
+ "net"
+)
+
+type (
+ Server struct {
+ *common.BaseService
+
+ ruleEnforcer *casbin.Enforcer
+ setupService common.SetupService
+ grpcServer *grpc.Server
+
+ consensusService *consensus.Service
+
+ config *Config
+ }
+
+ Config struct {
+ Port uint16
+ }
+)
+
+func NewApiServer(config *Config, logger *zap.Logger, setupService common.SetupService, consensusService *consensus.Service) (*Server, error) {
+ s := &Server{
+ config: config,
+ setupService: setupService,
+ consensusService: consensusService,
+ }
+
+ s.BaseService = common.NewBaseService("api", logger, s)
+
+ grpcServer := grpc.NewServer()
+ schema.RegisterClusterManagementServer(grpcServer, s)
+ schema.RegisterSetupServiceServer(grpcServer, s)
+
+ s.grpcServer = grpcServer
+
+ return s, nil
+}
+
+func (s *Server) OnStart() error {
+ listenHost := fmt.Sprintf(":%d", s.config.Port)
+ lis, err := net.Listen("tcp", listenHost)
+ if err != nil {
+ s.Logger.Fatal("failed to listen", zap.Error(err))
+ }
+
+ go func() {
+ err = s.grpcServer.Serve(lis)
+ s.Logger.Error("API server failed", zap.Error(err))
+ }()
+
+ s.Logger.Info("GRPC listening", zap.String("host", listenHost))
+
+ return nil
+}
+
+func (s *Server) OnStop() error {
+ s.grpcServer.Stop()
+
+ return nil
+}
diff --git a/core/internal/api/setup.go b/core/internal/api/setup.go
new file mode 100644
index 0000000..943f203
--- /dev/null
+++ b/core/internal/api/setup.go
@@ -0,0 +1,103 @@
+// Copyright 2020 The Monogon Project Authors.
+//
+// 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 api
+
+import (
+ "context"
+ "errors"
+ "fmt"
+ schema "git.monogon.dev/source/nexantic.git/core/generated/api"
+)
+
+const (
+ MinNameLength = 3
+)
+
+var (
+ ErrInvalidProvisioningToken = errors.New("invalid provisioning token")
+ ErrInvalidNameLength = fmt.Errorf("name must be at least %d characters long", MinNameLength)
+)
+
+func (s *Server) Setup(c context.Context, r *schema.SetupRequest) (*schema.SetupResponse, error) {
+
+ switch r.Request.(type) {
+ case *schema.SetupRequest_JoinCluster:
+ token, err := s.enterJoinCluster(r.GetJoinCluster())
+ if err != nil {
+ return nil, err
+ }
+
+ return &schema.SetupResponse{
+ Response: &schema.SetupResponse_JoinCluster{
+ JoinCluster: &schema.JoinClusterResponse{
+ ProvisioningToken: token,
+ },
+ },
+ }, nil
+
+ case *schema.SetupRequest_NewCluster:
+ return &schema.SetupResponse{
+ Response: &schema.SetupResponse_NewCluster{
+ NewCluster: &schema.NewClusterResponse{},
+ },
+ }, s.setupNewCluster(r.GetNewCluster())
+ }
+
+ return &schema.SetupResponse{}, nil
+}
+
+func (s *Server) enterJoinCluster(r *schema.JoinClusterRequest) (string, error) {
+ err := s.setupService.EnterJoinClusterMode()
+ if err != nil {
+ return "", err
+ }
+
+ return s.setupService.GetJoinClusterToken(), nil
+}
+
+func (s *Server) setupNewCluster(r *schema.NewClusterRequest) error {
+ if len(r.NodeName) < MinNameLength {
+ return ErrInvalidNameLength
+ }
+ return s.setupService.SetupNewCluster(r.NodeName, r.ExternalHost)
+}
+
+func (s *Server) ProvisionCluster(ctx context.Context, req *schema.ProvisionClusterRequest) (*schema.ProvisionClusterResponse, error) {
+ if len(req.NodeName) < MinNameLength {
+ return nil, ErrInvalidNameLength
+ }
+
+ // Verify provisioning token
+ if s.setupService.GetJoinClusterToken() != req.ProvisioningToken {
+ return nil, ErrInvalidProvisioningToken
+ }
+
+ // Join cluster
+ err := s.setupService.JoinCluster(req.NodeName, req.InitialCluster, req.ExternalHost)
+ if err != nil {
+ return nil, err
+ }
+
+ return &schema.ProvisionClusterResponse{}, nil
+}
+
+func (s *Server) Attest(c context.Context, r *schema.AttestRequest) (*schema.AttestResponse, error) {
+ // TODO implement
+ return &schema.AttestResponse{
+ Response: r.Challenge,
+ }, nil
+}