From 559bccccd40d028e412d9f11709ded0250ba6dcd Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordberg.se>
Date: Tue, 24 May 2022 23:33:38 +0200
Subject: implement primary and secondary role, for replication

---
 internal/node/primary/primary.go | 74 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 internal/node/primary/primary.go

(limited to 'internal/node/primary/primary.go')

diff --git a/internal/node/primary/primary.go b/internal/node/primary/primary.go
new file mode 100644
index 0000000..6128f49
--- /dev/null
+++ b/internal/node/primary/primary.go
@@ -0,0 +1,74 @@
+package primary
+
+import (
+	"crypto"
+	"net/http"
+	"time"
+
+	"git.sigsum.org/log-go/internal/db"
+	"git.sigsum.org/log-go/internal/node/handler"
+	"git.sigsum.org/log-go/internal/state"
+	"git.sigsum.org/sigsum-go/pkg/client"
+	"git.sigsum.org/sigsum-go/pkg/dns"
+	"git.sigsum.org/sigsum-go/pkg/merkle"
+	"git.sigsum.org/sigsum-go/pkg/types"
+)
+
+// Config is a collection of log parameters
+type Config struct {
+	LogID      string        // H(public key), then hex-encoded
+	TreeID     int64         // Merkle tree identifier used by Trillian
+	Prefix     string        // The portion between base URL and st/v0 (may be "")
+	MaxRange   int64         // Maximum number of leaves per get-leaves request
+	Deadline   time.Duration // Deadline used for gRPC requests
+	Interval   time.Duration // Cosigning frequency
+	ShardStart uint64        // Shard interval start (num seconds since UNIX epoch)
+
+	// Witnesses map trusted witness identifiers to public keys
+	Witnesses map[merkle.Hash]types.PublicKey
+}
+
+// Primary is an instance of the log's primary node
+type Primary struct {
+	Config
+	PublicHTTPMux   *http.ServeMux
+	InternalHTTPMux *http.ServeMux
+	TrillianClient  db.Client          // provides access to the Trillian backend
+	Signer          crypto.Signer      // provides access to Ed25519 private key
+	Stateman        state.StateManager // coordinates access to (co)signed tree heads
+	DNS             dns.Verifier       // checks if domain name knows a public key
+	Secondary       client.Client
+}
+
+// Implementing handler.Config
+func (p Primary) Prefix() string {
+	return p.Config.Prefix
+}
+func (p Primary) LogID() string {
+	return p.Config.LogID
+}
+func (p Primary) Deadline() time.Duration {
+	return p.Config.Deadline
+}
+
+// PublicHTTPHandlers returns all external handlers
+func (p Primary) PublicHTTPHandlers() []handler.Handler {
+	return []handler.Handler{
+		handler.Handler{p, addLeaf, types.EndpointAddLeaf, http.MethodPost},
+		handler.Handler{p, addCosignature, types.EndpointAddCosignature, http.MethodPost},
+		handler.Handler{p, getTreeHeadToCosign, types.EndpointGetTreeHeadToCosign, http.MethodGet},
+		handler.Handler{p, getTreeHeadCosigned, types.EndpointGetTreeHeadCosigned, http.MethodGet},
+		handler.Handler{p, getConsistencyProof, types.EndpointGetConsistencyProof, http.MethodGet},
+		handler.Handler{p, getInclusionProof, types.EndpointGetInclusionProof, http.MethodGet},
+		handler.Handler{p, getLeavesExternal, types.EndpointGetLeaves, http.MethodGet},
+	}
+}
+
+// InternalHTTPHandlers() returns all internal handlers
+func (p Primary) InternalHTTPHandlers() []handler.Handler {
+	return []handler.Handler{
+		handler.Handler{p, getTreeHeadUnsigned, types.EndpointGetTreeHeadUnsigned, http.MethodGet},
+		handler.Handler{p, getConsistencyProof, types.EndpointGetConsistencyProof, http.MethodGet},
+		handler.Handler{p, getLeavesInternal, types.EndpointGetLeaves, http.MethodGet},
+	}
+}
-- 
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