da: add context

da.go

@@ -1,31 +1,33 @@
 package da
 
+import "context"
+
 // DA defines very generic interface for interaction with Data Availability layers.
 type DA interface {
 	// MaxBlobSize returns the max blob size
-	MaxBlobSize() (uint64, error)
+	MaxBlobSize(ctx context.Context) (uint64, error)
 
 	// Get returns Blob for each given ID, or an error.
 	//
 	// Error should be returned if ID is not formatted properly, there is no Blob for given ID or any other client-level
 	// error occurred (dropped connection, timeout, etc).
-	Get(ids []ID) ([]Blob, error)
+	Get(ctx context.Context, ids []ID) ([]Blob, error)
 
 	// GetIDs returns IDs of all Blobs located in DA at given height.
-	GetIDs(height uint64) ([]ID, error)
+	GetIDs(ctx context.Context, height uint64) ([]ID, error)
 
 	// Commit creates a Commitment for each given Blob.
-	Commit(blobs []Blob) ([]Commitment, error)
+	Commit(ctx context.Context, blobs []Blob) ([]Commitment, error)
 
 	// Submit submits the Blobs to Data Availability layer.
 	//
 	// This method is synchronous. Upon successful submission to Data Availability layer, it returns ID identifying blob
 	// in DA and Proof of inclusion.
 	// If options is nil, default options are used.
-	Submit(blobs []Blob, gasPrice float64) ([]ID, []Proof, error)
+	Submit(ctx context.Context, blobs []Blob, gasPrice float64) ([]ID, []Proof, error)
 
 	// Validate validates Commitments against the corresponding Proofs. This should be possible without retrieving the Blobs.
-	Validate(ids []ID, proofs []Proof) ([]bool, error)
+	Validate(ctx context.Context, ids []ID, proofs []Proof) ([]bool, error)
 }
 
 // Blob is the data submitted/received from DA interface.

proxy/client.go

@@ -38,24 +38,24 @@ func (c *Client) Stop() error {
 }
 
 // MaxBlobSize returns the DA MaxBlobSize
-func (c *Client) MaxBlobSize() (uint64, error) {
+func (c *Client) MaxBlobSize(ctx context.Context) (uint64, error) {
 	req := &pbda.MaxBlobSizeRequest{}
-	resp, err := c.client.MaxBlobSize(context.TODO(), req)
+	resp, err := c.client.MaxBlobSize(ctx, req)
 	if err != nil {
 		return 0, err
 	}
 	return resp.MaxBlobSize, nil
 }
 
 // Get returns Blob for each given ID, or an error.
-func (c *Client) Get(ids []da.ID) ([]da.Blob, error) {
+func (c *Client) Get(ctx context.Context, ids []da.ID) ([]da.Blob, error) {
 	req := &pbda.GetRequest{
 		Ids: make([]*pbda.ID, len(ids)),
 	}
 	for i := range ids {
 		req.Ids[i] = &pbda.ID{Value: ids[i]}
 	}
-	resp, err := c.client.Get(context.TODO(), req)
+	resp, err := c.client.Get(ctx, req)
 	if err != nil {
 		return nil, err
 	}
@@ -64,9 +64,9 @@ func (c *Client) Get(ids []da.ID) ([]da.Blob, error) {
 }
 
 // GetIDs returns IDs of all Blobs located in DA at given height.
-func (c *Client) GetIDs(height uint64) ([]da.ID, error) {
+func (c *Client) GetIDs(ctx context.Context, height uint64) ([]da.ID, error) {
 	req := &pbda.GetIDsRequest{Height: height}
-	resp, err := c.client.GetIDs(context.TODO(), req)
+	resp, err := c.client.GetIDs(ctx, req)
 	if err != nil {
 		return nil, err
 	}
@@ -75,12 +75,12 @@ func (c *Client) GetIDs(height uint64) ([]da.ID, error) {
 }
 
 // Commit creates a Commitment for each given Blob.
-func (c *Client) Commit(blobs []da.Blob) ([]da.Commitment, error) {
+func (c *Client) Commit(ctx context.Context, blobs []da.Blob) ([]da.Commitment, error) {
 	req := &pbda.CommitRequest{
 		Blobs: blobsDA2PB(blobs),
 	}
 
-	resp, err := c.client.Commit(context.TODO(), req)
+	resp, err := c.client.Commit(ctx, req)
 	if err != nil {
 		return nil, err
 	}
@@ -89,13 +89,13 @@ func (c *Client) Commit(blobs []da.Blob) ([]da.Commitment, error) {
 }
 
 // Submit submits the Blobs to Data Availability layer.
-func (c *Client) Submit(blobs []da.Blob, gasPrice float64) ([]da.ID, []da.Proof, error) {
+func (c *Client) Submit(ctx context.Context, blobs []da.Blob, gasPrice float64) ([]da.ID, []da.Proof, error) {
 	req := &pbda.SubmitRequest{
 		Blobs:    blobsDA2PB(blobs),
 		GasPrice: gasPrice,
 	}
 
-	resp, err := c.client.Submit(context.TODO(), req)
+	resp, err := c.client.Submit(ctx, req)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -111,11 +111,11 @@ func (c *Client) Submit(blobs []da.Blob, gasPrice float64) ([]da.ID, []da.Proof,
 }
 
 // Validate validates Commitments against the corresponding Proofs. This should be possible without retrieving the Blobs.
-func (c *Client) Validate(ids []da.ID, proofs []da.Proof) ([]bool, error) {
+func (c *Client) Validate(ctx context.Context, ids []da.ID, proofs []da.Proof) ([]bool, error) {
 	req := &pbda.ValidateRequest{
 		Ids:    idsDA2PB(ids),
 		Proofs: proofsDA2PB(proofs),
 	}
-	resp, err := c.client.Validate(context.TODO(), req)
+	resp, err := c.client.Validate(ctx, req)
 	return resp.Results, err
 }

proxy/server.go

@@ -25,18 +25,18 @@ type proxySrv struct {
 }
 
 func (p *proxySrv) MaxBlobSize(ctx context.Context, request *pbda.MaxBlobSizeRequest) (*pbda.MaxBlobSizeResponse, error) {
-	maxBlobSize, err := p.target.MaxBlobSize()
+	maxBlobSize, err := p.target.MaxBlobSize(ctx)
 	return &pbda.MaxBlobSizeResponse{MaxBlobSize: maxBlobSize}, err
 }
 
 func (p *proxySrv) Get(ctx context.Context, request *pbda.GetRequest) (*pbda.GetResponse, error) {
 	ids := idsPB2DA(request.Ids)
-	blobs, err := p.target.Get(ids)
+	blobs, err := p.target.Get(ctx, ids)
 	return &pbda.GetResponse{Blobs: blobsDA2PB(blobs)}, err
 }
 
 func (p *proxySrv) GetIDs(ctx context.Context, request *pbda.GetIDsRequest) (*pbda.GetIDsResponse, error) {
-	ids, err := p.target.GetIDs(request.Height)
+	ids, err := p.target.GetIDs(ctx, request.Height)
 	if err != nil {
 		return nil, err
 	}
@@ -46,7 +46,7 @@ func (p *proxySrv) GetIDs(ctx context.Context, request *pbda.GetIDsRequest) (*pb
 
 func (p *proxySrv) Commit(ctx context.Context, request *pbda.CommitRequest) (*pbda.CommitResponse, error) {
 	blobs := blobsPB2DA(request.Blobs)
-	commits, err := p.target.Commit(blobs)
+	commits, err := p.target.Commit(ctx, blobs)
 	if err != nil {
 		return nil, err
 	}
@@ -57,7 +57,7 @@ func (p *proxySrv) Commit(ctx context.Context, request *pbda.CommitRequest) (*pb
 func (p *proxySrv) Submit(ctx context.Context, request *pbda.SubmitRequest) (*pbda.SubmitResponse, error) {
 	blobs := blobsPB2DA(request.Blobs)
 
-	ids, proofs, err := p.target.Submit(blobs, request.GasPrice)
+	ids, proofs, err := p.target.Submit(ctx, blobs, request.GasPrice)
 	if err != nil {
 		return nil, err
 	}
@@ -79,7 +79,7 @@ func (p *proxySrv) Validate(ctx context.Context, request *pbda.ValidateRequest)
 	ids := idsPB2DA(request.Ids)
 	proofs := proofsPB2DA(request.Proofs)
 	//TODO implement me
-	validity, err := p.target.Validate(ids, proofs)
+	validity, err := p.target.Validate(ctx, ids, proofs)
 	if err != nil {
 		return nil, err
 	}

test/dummy.go

@@ -2,6 +2,7 @@ package test
 
 import (
 	"bytes"
+	"context"
 	"crypto/ed25519"
 	"crypto/rand"
 	"crypto/sha256"
@@ -49,12 +50,12 @@ func NewDummyDA(opts ...func(*DummyDA) *DummyDA) *DummyDA {
 var _ da.DA = &DummyDA{}
 
 // MaxBlobSize returns the max blob size in bytes.
-func (d *DummyDA) MaxBlobSize() (uint64, error) {
+func (d *DummyDA) MaxBlobSize(ctx context.Context) (uint64, error) {
 	return d.maxBlobSize, nil
 }
 
 // Get returns Blobs for given IDs.
-func (d *DummyDA) Get(ids []da.ID) ([]da.Blob, error) {
+func (d *DummyDA) Get(ctx context.Context, ids []da.ID) ([]da.Blob, error) {
 	d.mu.Lock()
 	defer d.mu.Unlock()
 	blobs := make([]da.Blob, len(ids))
@@ -78,7 +79,7 @@ func (d *DummyDA) Get(ids []da.ID) ([]da.Blob, error) {
 }
 
 // GetIDs returns IDs of Blobs at given DA height.
-func (d *DummyDA) GetIDs(height uint64) ([]da.ID, error) {
+func (d *DummyDA) GetIDs(ctx context.Context, height uint64) ([]da.ID, error) {
 	d.mu.Lock()
 	defer d.mu.Unlock()
 	kvps := d.data[height]
@@ -90,7 +91,7 @@ func (d *DummyDA) GetIDs(height uint64) ([]da.ID, error) {
 }
 
 // Commit returns cryptographic Commitments for given blobs.
-func (d *DummyDA) Commit(blobs []da.Blob) ([]da.Commitment, error) {
+func (d *DummyDA) Commit(ctx context.Context, blobs []da.Blob) ([]da.Commitment, error) {
 	commits := make([]da.Commitment, len(blobs))
 	for i, blob := range blobs {
 		commits[i] = d.getHash(blob)
@@ -99,7 +100,7 @@ func (d *DummyDA) Commit(blobs []da.Blob) ([]da.Commitment, error) {
 }
 
 // Submit stores blobs in DA layer.
-func (d *DummyDA) Submit(blobs []da.Blob, gasPrice float64) ([]da.ID, []da.Proof, error) {
+func (d *DummyDA) Submit(ctx context.Context, blobs []da.Blob, gasPrice float64) ([]da.ID, []da.Proof, error) {
 	d.mu.Lock()
 	defer d.mu.Unlock()
 	ids := make([]da.ID, len(blobs))
@@ -116,7 +117,7 @@ func (d *DummyDA) Submit(blobs []da.Blob, gasPrice float64) ([]da.ID, []da.Proof
 }
 
 // Validate checks the Proofs for given IDs.
-func (d *DummyDA) Validate(ids []da.ID, proofs []da.Proof) ([]bool, error) {
+func (d *DummyDA) Validate(ctx context.Context, ids []da.ID, proofs []da.Proof) ([]bool, error) {
 	if len(ids) != len(proofs) {
 		return nil, errors.New("number of IDs doesn't equal to number of proofs")
 	}

test/test_suite.go

@@ -2,6 +2,7 @@ package test
 
 import (
 	"bytes"
+	"context"
 	"sync"
 	"testing"
 	"time"
@@ -40,58 +41,59 @@ func BasicDATest(t *testing.T, da da.DA) {
 	msg1 := []byte("message 1")
 	msg2 := []byte("message 2")
 
-	id1, proof1, err := da.Submit([]Blob{msg1}, -1)
+	ctx := context.TODO()
+	id1, proof1, err := da.Submit(ctx, []Blob{msg1}, -1)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, id1)
 	assert.NotEmpty(t, proof1)
 
-	id2, proof2, err := da.Submit([]Blob{msg2}, -1)
+	id2, proof2, err := da.Submit(ctx, []Blob{msg2}, -1)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, id2)
 	assert.NotEmpty(t, proof2)
 
-	id3, proof3, err := da.Submit([]Blob{msg1}, -1)
+	id3, proof3, err := da.Submit(ctx, []Blob{msg1}, -1)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, id3)
 	assert.NotEmpty(t, proof3)
 
 	assert.NotEqual(t, id1, id2)
 	assert.NotEqual(t, id1, id3)
 
-	ret, err := da.Get(id1)
+	ret, err := da.Get(ctx, id1)
 	assert.NoError(t, err)
 	assert.Equal(t, []Blob{msg1}, ret)
 
-	commitment1, err := da.Commit([]Blob{msg1})
+	commitment1, err := da.Commit(ctx, []Blob{msg1})
 	assert.NoError(t, err)
 	assert.NotEmpty(t, commitment1)
 
-	commitment2, err := da.Commit([]Blob{msg2})
+	commitment2, err := da.Commit(ctx, []Blob{msg2})
 	assert.NoError(t, err)
 	assert.NotEmpty(t, commitment2)
 
-	oks, err := da.Validate(id1, proof1)
+	oks, err := da.Validate(ctx, id1, proof1)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, oks)
 	for _, ok := range oks {
 		assert.True(t, ok)
 	}
 
-	oks, err = da.Validate(id2, proof2)
+	oks, err = da.Validate(ctx, id2, proof2)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, oks)
 	for _, ok := range oks {
 		assert.True(t, ok)
 	}
 
-	oks, err = da.Validate(id1, proof2)
+	oks, err = da.Validate(ctx, id1, proof2)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, oks)
 	for _, ok := range oks {
 		assert.False(t, ok)
 	}
 
-	oks, err = da.Validate(id2, proof1)
+	oks, err = da.Validate(ctx, id2, proof1)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, oks)
 	for _, ok := range oks {
@@ -101,7 +103,8 @@ func BasicDATest(t *testing.T, da da.DA) {
 
 // CheckErrors ensures that errors are handled properly by DA.
 func CheckErrors(t *testing.T, da da.DA) {
-	blob, err := da.Get([]ID{[]byte("invalid")})
+	ctx := context.TODO()
+	blob, err := da.Get(ctx, []ID{[]byte("invalid")})
 	assert.Error(t, err)
 	assert.Empty(t, blob)
 }
@@ -110,7 +113,8 @@ func CheckErrors(t *testing.T, da da.DA) {
 func GetIDsTest(t *testing.T, da da.DA) {
 	msgs := [][]byte{[]byte("msg1"), []byte("msg2"), []byte("msg3")}
 
-	ids, proofs, err := da.Submit(msgs, -1)
+	ctx := context.TODO()
+	ids, proofs, err := da.Submit(ctx, msgs, -1)
 	assert.NoError(t, err)
 	assert.Len(t, ids, len(msgs))
 	assert.Len(t, proofs, len(msgs))
@@ -122,12 +126,12 @@ func GetIDsTest(t *testing.T, da da.DA) {
 	// As we're the only user, we don't need to handle external data (that could be submitted in real world).
 	// There is no notion of height, so we need to scan the DA to get test data back.
 	for i := uint64(1); !found && !time.Now().After(end); i++ {
-		ret, err := da.GetIDs(i)
+		ret, err := da.GetIDs(ctx, i)
 		if err != nil {
 			t.Error("failed to get IDs:", err)
 		}
 		if len(ret) > 0 {
-			blobs, err := da.Get(ret)
+			blobs, err := da.Get(ctx, ret)
 			assert.NoError(t, err)
 
 			// Submit ensures atomicity of batch, so it makes sense to compare actual blobs (bodies) only when lengths
@@ -151,18 +155,20 @@ func ConcurrentReadWriteTest(t *testing.T, da da.DA) {
 	var wg sync.WaitGroup
 	wg.Add(2)
 
+	ctx := context.TODO()
+
 	go func() {
 		defer wg.Done()
 		for i := uint64(1); i <= 100; i++ {
-			_, err := da.GetIDs(i)
+			_, err := da.GetIDs(ctx, i)
 			assert.NoError(t, err)
 		}
 	}()
 
 	go func() {
 		defer wg.Done()
 		for i := uint64(1); i <= 100; i++ {
-			_, _, err := da.Submit([][]byte{[]byte("test")}, -1)
+			_, _, err := da.Submit(ctx, [][]byte{[]byte("test")}, -1)
 			assert.NoError(t, err)
 		}
 	}()