1 files changed, 0 insertions, 194 deletions
diff --git a/pkg/db/trillian.go b/pkg/db/trillian.go
deleted file mode 100644
index 3147c8d..0000000
--- a/pkg/db/trillian.go
+++ /dev/null
@@ -1,194 +0,0 @@
-package db
-
-import (
-	"context"
-	"fmt"
-	"time"
-
-	"git.sigsum.org/sigsum-go/pkg/log"
-	"git.sigsum.org/sigsum-go/pkg/requests"
-	"git.sigsum.org/sigsum-go/pkg/types"
-	"github.com/google/trillian"
-	trillianTypes "github.com/google/trillian/types"
-	"google.golang.org/grpc/codes"
-)
-
-// TrillianClient implements the Client interface for Trillian's gRPC backend
-type TrillianClient struct {
-	// TreeID is a Merkle tree identifier that Trillian uses
-	TreeID int64
-
-	// GRPC is a Trillian gRPC client
-	GRPC trillian.TrillianLogClient
-}
-
-func (c *TrillianClient) AddLeaf(ctx context.Context, req *requests.Leaf) error {
-	leaf := types.Leaf{
-		Statement: types.Statement{
-			ShardHint: req.ShardHint,
-			Checksum:  *types.HashFn(req.Message[:]),
-		},
-		Signature: req.Signature,
-		KeyHash:   *types.HashFn(req.PublicKey[:]),
-	}
-	serialized := leaf.ToBinary()
-
-	log.Debug("queueing leaf request: %x", types.LeafHash(serialized))
-	rsp, err := c.GRPC.QueueLeaf(ctx, &trillian.QueueLeafRequest{
-		LogId: c.TreeID,
-		Leaf: &trillian.LogLeaf{
-			LeafValue: serialized,
-		},
-	})
-	if err != nil {
-		return fmt.Errorf("backend failure: %v", err)
-	}
-	if rsp == nil {
-		return fmt.Errorf("no response")
-	}
-	if rsp.QueuedLeaf == nil {
-		return fmt.Errorf("no queued leaf")
-	}
-	if codes.Code(rsp.QueuedLeaf.GetStatus().GetCode()) == codes.AlreadyExists {
-		return fmt.Errorf("leaf is already queued or included")
-	}
-	return nil
-}
-
-func (c *TrillianClient) GetTreeHead(ctx context.Context) (*types.TreeHead, error) {
-	rsp, err := c.GRPC.GetLatestSignedLogRoot(ctx, &trillian.GetLatestSignedLogRootRequest{
-		LogId: c.TreeID,
-	})
-	if err != nil {
-		return nil, fmt.Errorf("backend failure: %v", err)
-	}
-	if rsp == nil {
-		return nil, fmt.Errorf("no response")
-	}
-	if rsp.SignedLogRoot == nil {
-		return nil, fmt.Errorf("no signed log root")
-	}
-	if rsp.SignedLogRoot.LogRoot == nil {
-		return nil, fmt.Errorf("no log root")
-	}
-	var r trillianTypes.LogRootV1
-	if err := r.UnmarshalBinary(rsp.SignedLogRoot.LogRoot); err != nil {
-		return nil, fmt.Errorf("no log root: unmarshal failed: %v", err)
-	}
-	if len(r.RootHash) != types.HashSize {
-		return nil, fmt.Errorf("unexpected hash length: %d", len(r.RootHash))
-	}
-	return treeHeadFromLogRoot(&r), nil
-}
-
-func (c *TrillianClient) GetConsistencyProof(ctx context.Context, req *requests.ConsistencyProof) (*types.ConsistencyProof, error) {
-	rsp, err := c.GRPC.GetConsistencyProof(ctx, &trillian.GetConsistencyProofRequest{
-		LogId:          c.TreeID,
-		FirstTreeSize:  int64(req.OldSize),
-		SecondTreeSize: int64(req.NewSize),
-	})
-	if err != nil {
-		return nil, fmt.Errorf("backend failure: %v", err)
-	}
-	if rsp == nil {
-		return nil, fmt.Errorf("no response")
-	}
-	if rsp.Proof == nil {
-		return nil, fmt.Errorf("no consistency proof")
-	}
-	if len(rsp.Proof.Hashes) == 0 {
-		return nil, fmt.Errorf("not a consistency proof: empty")
-	}
-	path, err := nodePathFromHashes(rsp.Proof.Hashes)
-	if err != nil {
-		return nil, fmt.Errorf("not a consistency proof: %v", err)
-	}
-	return &types.ConsistencyProof{
-		OldSize: req.OldSize,
-		NewSize: req.NewSize,
-		Path:    path,
-	}, nil
-}
-
-func (c *TrillianClient) GetInclusionProof(ctx context.Context, req *requests.InclusionProof) (*types.InclusionProof, error) {
-	rsp, err := c.GRPC.GetInclusionProofByHash(ctx, &trillian.GetInclusionProofByHashRequest{
-		LogId:           c.TreeID,
-		LeafHash:        req.LeafHash[:],
-		TreeSize:        int64(req.TreeSize),
-		OrderBySequence: true,
-	})
-	if err != nil {
-		return nil, fmt.Errorf("backend failure: %v", err)
-	}
-	if rsp == nil {
-		return nil, fmt.Errorf("no response")
-	}
-	if len(rsp.Proof) != 1 {
-		return nil, fmt.Errorf("bad proof count: %d", len(rsp.Proof))
-	}
-	proof := rsp.Proof[0]
-	if len(proof.Hashes) == 0 {
-		return nil, fmt.Errorf("not an inclusion proof: empty")
-	}
-	path, err := nodePathFromHashes(proof.Hashes)
-	if err != nil {
-		return nil, fmt.Errorf("not an inclusion proof: %v", err)
-	}
-	return &types.InclusionProof{
-		TreeSize:  req.TreeSize,
-		LeafIndex: uint64(proof.LeafIndex),
-		Path:      path,
-	}, nil
-}
-
-func (c *TrillianClient) GetLeaves(ctx context.Context, req *requests.Leaves) (*types.Leaves, error) {
-	rsp, err := c.GRPC.GetLeavesByRange(ctx, &trillian.GetLeavesByRangeRequest{
-		LogId:      c.TreeID,
-		StartIndex: int64(req.StartSize),
-		Count:      int64(req.EndSize-req.StartSize) + 1,
-	})
-	if err != nil {
-		return nil, fmt.Errorf("backend failure: %v", err)
-	}
-	if rsp == nil {
-		return nil, fmt.Errorf("no response")
-	}
-	if got, want := len(rsp.Leaves), int(req.EndSize-req.StartSize+1); got != want {
-		return nil, fmt.Errorf("unexpected number of leaves: %d", got)
-	}
-	var list types.Leaves = make([]types.Leaf, 0, len(rsp.Leaves))
-	for i, leaf := range rsp.Leaves {
-		leafIndex := int64(req.StartSize + uint64(i))
-		if leafIndex != leaf.LeafIndex {
-			return nil, fmt.Errorf("unexpected leaf(%d): got index %d", leafIndex, leaf.LeafIndex)
-		}
-
-		var l types.Leaf
-		if err := l.FromBinary(leaf.LeafValue); err != nil {
-			return nil, fmt.Errorf("unexpected leaf(%d): %v", leafIndex, err)
-		}
-		list = append(list[:], l)
-	}
-	return &list, nil
-}
-
-func treeHeadFromLogRoot(lr *trillianTypes.LogRootV1) *types.TreeHead {
-	th := types.TreeHead{
-		Timestamp: uint64(time.Now().Unix()),
-		TreeSize:  uint64(lr.TreeSize),
-	}
-	copy(th.RootHash[:], lr.RootHash)
-	return &th
-}
-
-func nodePathFromHashes(hashes [][]byte) ([]types.Hash, error) {
-	path := make([]types.Hash, len(hashes))
-	for i := 0; i < len(hashes); i++ {
-		if len(hashes[i]) != types.HashSize {
-			return nil, fmt.Errorf("unexpected hash length: %v", len(hashes[i]))
-		}
-
-		copy(path[i][:], hashes[i])
-	}
-	return path, nil
-}