Example #1
0
// instanceSelector retrieves the data instance given its complete string name and
// forwards the request to that instance's HTTP handler.
func instanceSelector(c *web.C, h http.Handler) http.Handler {
	fn := func(w http.ResponseWriter, r *http.Request) {
		var err error
		dataname := dvid.InstanceName(c.URLParams["dataname"])
		uuid, ok := c.Env["uuid"].(dvid.UUID)
		if !ok {
			msg := fmt.Sprintf("Bad format for UUID %q\n", c.Env["uuid"])
			BadRequest(w, r, msg)
			return
		}
		data, err := datastore.GetDataByUUID(uuid, dataname)
		if err != nil {
			BadRequest(w, r, err)
			return
		}
		v, err := datastore.VersionFromUUID(uuid)
		if err != nil {
			BadRequest(w, r, err)
		}
		ctx := datastore.NewVersionedCtx(data, v)

		// Handle DVID-wide query string commands like non-interactive call designations
		queryValues := r.URL.Query()

		// All HTTP requests are interactive so let server tally request.
		interactive := queryValues.Get("interactive")
		if interactive == "" || (interactive != "false" && interactive != "0") {
			GotInteractiveRequest()
		}

		// TODO: setup routing for data instances as well.
		data.ServeHTTP(uuid, ctx, w, r)
	}
	return http.HandlerFunc(fn)
}
Example #2
0
// NewRepo returns a new datastore.Repo suitable for testing.
func NewRepo() (dvid.UUID, dvid.VersionID) {
	uuid, err := datastore.NewRepo("testRepo", "A test repository", nil)
	if err != nil {
		log.Fatalf("Unable to create new testing repo: %v\n", err)
	}

	versionID, err := datastore.VersionFromUUID(uuid)
	if err != nil {
		log.Fatalf("Unable to get version ID from repo root UUID %s\n", uuid)
	}
	return uuid, versionID
}
Example #3
0
// NewData returns a pointer to labelvol data.
func NewData(uuid dvid.UUID, id dvid.InstanceID, name dvid.InstanceName, c dvid.Config) (*Data, error) {
	// Initialize the Data for this data type
	basedata, err := datastore.NewDataService(dtype, uuid, id, name, c)
	if err != nil {
		return nil, err
	}
	props := new(Properties)
	props.setDefault()
	if err := props.setByConfig(c); err != nil {
		return nil, err
	}
	data := &Data{
		Data:       basedata,
		Properties: *props,
	}
	data.Properties.MaxLabel = make(map[dvid.VersionID]uint64)
	v, err := datastore.VersionFromUUID(uuid)
	if err != nil {
		return nil, err
	}
	data.Properties.MaxLabel[v] = 0
	return data, nil
}
Example #4
0
func TestCommitBranchMergeDelete(t *testing.T) {
	datastore.OpenTest()
	defer datastore.CloseTest()

	uuid := createRepo(t)

	// Shouldn't be able to create branch on open node.
	branchReq := fmt.Sprintf("%snode/%s/branch", WebAPIPath, uuid)
	TestBadHTTP(t, "POST", branchReq, nil)

	// Commit it.
	payload := bytes.NewBufferString(`{"note": "This is my test commit", "log": ["line1", "line2", "some more stuff in a line"]}`)
	apiStr := fmt.Sprintf("%snode/%s/commit", WebAPIPath, uuid)
	TestHTTP(t, "POST", apiStr, payload)

	// Make sure committed nodes can only be read.
	// We shouldn't be able to write to log.
	payload = bytes.NewBufferString(`{"log": ["line1", "line2", "some more stuff in a line"]}`)
	apiStr = fmt.Sprintf("%snode/%s/log", WebAPIPath, uuid)
	TestBadHTTP(t, "POST", apiStr, payload)

	// Should be able to create branch now that we've committed parent.
	respData := TestHTTP(t, "POST", branchReq, nil)
	resp := struct {
		Child string `json:"child"`
	}{}
	if err := json.Unmarshal(respData, &resp); err != nil {
		t.Errorf("Expected 'child' JSON response.  Got %s\n", string(respData))
	}
	parent1 := dvid.UUID(resp.Child)

	// Create a sibling.
	respData = TestHTTP(t, "POST", branchReq, nil)
	if err := json.Unmarshal(respData, &resp); err != nil {
		t.Errorf("Expected 'child' JSON response.  Got %s\n", string(respData))
	}
	parent2 := dvid.UUID(resp.Child)

	// Commit both parents
	payload = bytes.NewBufferString(`{"note": "This is first parent"}`)
	apiStr = fmt.Sprintf("%snode/%s/commit", WebAPIPath, parent1)
	TestHTTP(t, "POST", apiStr, payload)

	payload = bytes.NewBufferString(`{"note": "This is second parent"}`)
	apiStr = fmt.Sprintf("%snode/%s/commit", WebAPIPath, parent2)
	TestHTTP(t, "POST", apiStr, payload)

	// Merge the two disjoint branches.
	mergeJSON := fmt.Sprintf(`{"mergeType": "conflict-free", "note": "This is my merged node", "parents": [%q, %q]}`, parent1[:7], parent2)
	payload = bytes.NewBufferString(mergeJSON)
	apiStr = fmt.Sprintf("%srepo/%s/merge", WebAPIPath, parent1)
	TestHTTP(t, "POST", apiStr, payload)

	// Get root version to check after delete repo.
	rootV, err := datastore.VersionFromUUID(uuid)
	if err != nil {
		t.Errorf("Got unexpected error on getting version from root UUID: %v\n", err)
	}

	// Delete the entire repo including all branches.
	apiStr = fmt.Sprintf("%srepo/%s", WebAPIPath, parent2)
	TestBadHTTP(t, "DELETE", apiStr, nil) // Requires query string
	apiStr = fmt.Sprintf("%srepo/%s?imsure=true", WebAPIPath, parent2)
	TestHTTP(t, "DELETE", apiStr, nil) // Requires query string

	// Make sure none of the repo is still accessible.
	jsonResp, err := datastore.GetRepoJSON(uuid)
	if err == nil {
		t.Errorf("Expected invalid UUID after repo delete but got json back: %s\n", jsonResp)
	}
	if err != datastore.ErrInvalidUUID {
		t.Errorf("Expected invalid UUID after repo delete but got unexpected error: %v\n", err)
	}
	_, err = datastore.VersionFromUUID(uuid)
	if err != datastore.ErrInvalidUUID {
		t.Errorf("Expected invalid rot UUID after repo delete but got unexpected error: %v\n", err)
	}
	_, err = datastore.VersionFromUUID(parent1)
	if err != datastore.ErrInvalidUUID {
		t.Errorf("Expected invalid UUID for 1st parent after repo delete but got unexpected error: %v\n", err)
	}
	_, err = datastore.VersionFromUUID(parent2)
	if err != datastore.ErrInvalidUUID {
		t.Errorf("Expected invalid UUID for 2nd parent after repo delete but got unexpected error: %v\n", err)
	}
	_, err = datastore.UUIDFromVersion(rootV)
	if err != datastore.ErrInvalidVersion {
		t.Errorf("Expected invalid version id for root after repo delete but got unexpected error: %v\n", err)
	}
}
Example #5
0
func TestKeyvalueVersioning(t *testing.T) {
	datastore.OpenTest()
	defer datastore.CloseTest()

	uuid, _ := initTestRepo()

	config := dvid.NewConfig()
	dataservice, err := datastore.NewData(uuid, kvtype, "versiontest", config)
	if err != nil {
		t.Fatalf("Error creating new keyvalue instance: %v\n", err)
	}
	data, ok := dataservice.(*Data)
	if !ok {
		t.Fatalf("Returned new data instance is not roi.Data\n")
	}

	// PUT a value
	key1 := "mykey"
	value1 := "some stuff"
	key1req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid, data.DataName(), key1)
	server.TestHTTP(t, "POST", key1req, strings.NewReader(value1))

	// Add 2nd k/v
	key2 := "my2ndkey"
	value2 := "more good stuff"
	key2req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid, data.DataName(), key2)
	server.TestHTTP(t, "POST", key2req, strings.NewReader(value2))

	// Create a new version in repo
	if err = datastore.Commit(uuid, "my commit msg", []string{"stuff one", "stuff two"}); err != nil {
		t.Errorf("Unable to lock root node %s: %v\n", uuid, err)
	}
	uuid2, err := datastore.NewVersion(uuid, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid, err)
	}
	_, err = datastore.VersionFromUUID(uuid2)
	if err != nil {
		t.Fatalf("Unable to get version ID from new uuid %s: %v\n", uuid2, err)
	}

	// Change the 2nd k/v
	uuid2val := "this is completely different"
	uuid2req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid2, data.DataName(), key2)
	server.TestHTTP(t, "POST", uuid2req, strings.NewReader(uuid2val))

	// Get the first version value
	returnValue := server.TestHTTP(t, "GET", key2req, nil)
	if string(returnValue) != value2 {
		t.Errorf("Error on first version, key %q: expected %s, got %s\n", key2, value2, string(returnValue))
	}

	// Get the second version value
	returnValue = server.TestHTTP(t, "GET", uuid2req, nil)
	if string(returnValue) != uuid2val {
		t.Errorf("Error on second version, key %q: expected %s, got %s\n", key2, uuid2val, string(returnValue))
	}

	// Check return of first two keys in range.
	rangereq := fmt.Sprintf("%snode/%s/%s/keyrange/%s/%s", server.WebAPIPath, uuid, data.DataName(),
		"my", "zebra")
	returnValue = server.TestHTTP(t, "GET", rangereq, nil)

	var retrievedKeys []string
	if err = json.Unmarshal(returnValue, &retrievedKeys); err != nil {
		t.Errorf("Bad key range request unmarshal: %v\n", err)
	}
	if len(retrievedKeys) != 2 || retrievedKeys[1] != "mykey" && retrievedKeys[0] != "my2ndKey" {
		t.Errorf("Bad key range request return.  Expected: [%q,%q].  Got: %s\n",
			key1, key2, string(returnValue))
	}

	// Commit the repo
	if err = datastore.Commit(uuid2, "my 2nd commit msg", []string{"changed 2nd k/v"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid2, err)
	}

	// Make grandchild of root
	uuid3, err := datastore.NewVersion(uuid2, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid2, err)
	}

	// Delete the 2nd k/v
	uuid3req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid3, data.DataName(), key2)
	server.TestHTTP(t, "DELETE", uuid3req, nil)

	server.TestBadHTTP(t, "GET", uuid3req, nil)

	// Make sure the 2nd k/v is correct for each of previous versions.
	returnValue = server.TestHTTP(t, "GET", key2req, nil)
	if string(returnValue) != value2 {
		t.Errorf("Error on first version, key %q: expected %s, got %s\n", key2, value2, string(returnValue))
	}
	returnValue = server.TestHTTP(t, "GET", uuid2req, nil)
	if string(returnValue) != uuid2val {
		t.Errorf("Error on second version, key %q: expected %s, got %s\n", key2, uuid2val, string(returnValue))
	}

	// Make a child
	if err = datastore.Commit(uuid3, "my 3rd commit msg", []string{"deleted 2nd k/v"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid2, err)
	}
	uuid4, err := datastore.NewVersion(uuid3, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid3, err)
	}

	// Change the 2nd k/v
	uuid4val := "we are reintroducing this k/v"
	uuid4req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid4, data.DataName(), key2)
	server.TestHTTP(t, "POST", uuid4req, strings.NewReader(uuid4val))

	if err = datastore.Commit(uuid4, "commit node 4", []string{"we modified stuff"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid4, err)
	}

	// Make sure the 2nd k/v is correct for each of previous versions.
	returnValue = server.TestHTTP(t, "GET", key2req, nil)
	if string(returnValue) != value2 {
		t.Errorf("Error on first version, key %q: expected %s, got %s\n", key2, value2, string(returnValue))
	}
	returnValue = server.TestHTTP(t, "GET", uuid2req, nil)
	if string(returnValue) != uuid2val {
		t.Errorf("Error on second version, key %q: expected %s, got %s\n", key2, uuid2val, string(returnValue))
	}
	server.TestBadHTTP(t, "GET", uuid3req, nil)
	returnValue = server.TestHTTP(t, "GET", uuid4req, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on fourth version, key %q: expected %s, got %s\n", key2, uuid4val, string(returnValue))
	}

	// Let's try a merge!

	// Make a child off the 2nd version from root.
	uuid5, err := datastore.NewVersion(uuid2, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid2, err)
	}

	// Store new stuff in 2nd k/v
	uuid5val := "this is forked value"
	uuid5req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid5, data.DataName(), key2)
	server.TestHTTP(t, "POST", uuid5req, strings.NewReader(uuid5val))

	returnValue = server.TestHTTP(t, "GET", uuid5req, nil)
	if string(returnValue) != uuid5val {
		t.Errorf("Error on merged child, key %q: expected %q, got %q\n", key2, uuid5val, string(returnValue))
	}

	// Commit node
	if err = datastore.Commit(uuid5, "forked node", []string{"we modified stuff"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid5, err)
	}

	// Should be able to merge using conflict-free (disjoint at key level) merge even though
	// its conflicted.  Will get lazy error on request.
	badChild, err := datastore.Merge([]dvid.UUID{uuid4, uuid5}, "some child", datastore.MergeConflictFree)
	if err != nil {
		t.Errorf("Error doing merge: %v\n", err)
	}
	childreq := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, badChild, data.DataName(), key2)
	server.TestBadHTTP(t, "GET", childreq, nil)

	// Manually fix conflict: Branch, and then delete 2nd k/v and commit.
	uuid6, err := datastore.NewVersion(uuid5, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid5, err)
	}

	uuid6req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid6, data.DataName(), key2)
	server.TestHTTP(t, "DELETE", uuid6req, nil)
	server.TestBadHTTP(t, "GET", uuid6req, nil)

	if err = datastore.Commit(uuid6, "deleted forked node 2nd k/v", []string{"we modified stuff"}); err != nil {
		t.Errorf("Unable to commit node %s: %s\n", uuid6, err)
	}

	// Should now be able to correctly merge the two branches.
	goodChild, err := datastore.Merge([]dvid.UUID{uuid4, uuid6}, "merging stuff", datastore.MergeConflictFree)
	if err != nil {
		t.Errorf("Error doing merge: %v\n", err)
	}

	// We should be able to see just the original uuid4 value of the 2nd k/v
	childreq = fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, goodChild, data.DataName(), key2)
	returnValue = server.TestHTTP(t, "GET", childreq, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on merged child, key %q: expected %q, got %q\n", key2, uuid4val, string(returnValue))
	}

	// Apply the automatic conflict resolution using ordering.
	payload := fmt.Sprintf(`{"data":["versiontest"],"parents":[%q,%q],"note":"automatic resolved merge"}`, uuid5, uuid4)
	resolveReq := fmt.Sprintf("%srepo/%s/resolve", server.WebAPIPath, uuid4)
	returnValue = server.TestHTTP(t, "POST", resolveReq, bytes.NewBufferString(payload))
	resolveResp := struct {
		Child dvid.UUID `json:"child"`
	}{}
	if err := json.Unmarshal(returnValue, &resolveResp); err != nil {
		t.Fatalf("Can't parse return of resolve request: %s\n", string(returnValue))
	}

	// We should now see the uuid5 version of the 2nd k/v in the returned merged node.
	childreq = fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, resolveResp.Child, data.DataName(), key2)
	returnValue = server.TestHTTP(t, "GET", childreq, nil)
	if string(returnValue) != uuid5val {
		t.Errorf("Error on auto merged child, key %q: expected %q, got %q\n", key2, uuid5val, string(returnValue))
	}

	// Introduce a child off root but don't add 2nd k/v to it.
	uuid7, err := datastore.NewVersion(uuid, "2nd child off root", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid, err)
	}
	if err = datastore.Commit(uuid7, "useless node", []string{"we modified nothing!"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid7, err)
	}

	// Now merge the previously merged node with the newly created "blank" child off root.
	if err = datastore.Commit(goodChild, "this was a good merge", []string{}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", goodChild, err)
	}
	merge2, err := datastore.Merge([]dvid.UUID{goodChild, uuid7}, "merging a useless path", datastore.MergeConflictFree)
	if err != nil {
		t.Errorf("Error doing merge: %v\n", err)
	}
	merge3, err := datastore.Merge([]dvid.UUID{uuid7, goodChild}, "merging a useless path in reverse order", datastore.MergeConflictFree)
	if err != nil {
		t.Errorf("Error doing merge: %v\n", err)
	}

	// We should still be conflict free since 2nd key in left parent path will take precedent over shared 2nd key
	// in root.  This tests our invalidation of ancestors.
	toughreq := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, merge2, data.DataName(), key2)
	returnValue = server.TestHTTP(t, "GET", toughreq, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on merged child, key %q: expected %q, got %q\n", key2, uuid4val, string(returnValue))
	}
	toughreq = fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, merge3, data.DataName(), key2)
	returnValue = server.TestHTTP(t, "GET", toughreq, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on merged child, key %q: expected %q, got %q\n", key2, uuid4val, string(returnValue))
	}
}
Example #6
0
func TestKeyvalueUnversioned(t *testing.T) {
	datastore.OpenTest()
	defer datastore.CloseTest()

	uuid, _ := initTestRepo()

	config := dvid.NewConfig()
	config.Set("versioned", "false")
	dataservice, err := datastore.NewData(uuid, kvtype, "unversiontest", config)
	if err != nil {
		t.Fatalf("Error creating new keyvalue instance: %v\n", err)
	}
	data, ok := dataservice.(*Data)
	if !ok {
		t.Fatalf("Returned new data instance is not roi.Data\n")
	}

	// PUT a value
	key1 := "mykey"
	value1 := "some stuff"
	key1req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid, data.DataName(), key1)
	server.TestHTTP(t, "POST", key1req, strings.NewReader(value1))

	// Add 2nd k/v
	key2 := "my2ndkey"
	value2 := "more good stuff"
	key2req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid, data.DataName(), key2)
	server.TestHTTP(t, "POST", key2req, strings.NewReader(value2))

	// Create a new version in repo
	if err = datastore.Commit(uuid, "my commit msg", []string{"stuff one", "stuff two"}); err != nil {
		t.Errorf("Unable to lock root node %s: %v\n", uuid, err)
	}
	uuid2, err := datastore.NewVersion(uuid, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid, err)
	}
	_, err = datastore.VersionFromUUID(uuid2)
	if err != nil {
		t.Fatalf("Unable to get version ID from new uuid %s: %v\n", uuid2, err)
	}

	// Change the 2nd k/v
	uuid2val := "this is completely different"
	uuid2req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid2, data.DataName(), key2)
	server.TestHTTP(t, "POST", uuid2req, strings.NewReader(uuid2val))

	// Now the first version value should equal the new value
	returnValue := server.TestHTTP(t, "GET", key2req, nil)
	if string(returnValue) != uuid2val {
		t.Errorf("Error on unversioned key %q: expected %s, got %s\n", key2, uuid2val, string(returnValue))
	}

	// Get the second version value
	returnValue = server.TestHTTP(t, "GET", uuid2req, nil)
	if string(returnValue) != uuid2val {
		t.Errorf("Error on unversioned key %q: expected %s, got %s\n", key2, uuid2val, string(returnValue))
	}

	// Check return of first two keys in range.
	rangereq := fmt.Sprintf("%snode/%s/%s/keyrange/%s/%s", server.WebAPIPath, uuid, data.DataName(),
		"my", "zebra")
	returnValue = server.TestHTTP(t, "GET", rangereq, nil)

	var retrievedKeys []string
	if err = json.Unmarshal(returnValue, &retrievedKeys); err != nil {
		t.Errorf("Bad key range request unmarshal: %v\n", err)
	}
	if len(retrievedKeys) != 2 || retrievedKeys[1] != "mykey" && retrievedKeys[0] != "my2ndKey" {
		t.Errorf("Bad key range request return.  Expected: [%q,%q].  Got: %s\n",
			key1, key2, string(returnValue))
	}

	// Commit the repo
	if err = datastore.Commit(uuid2, "my 2nd commit msg", []string{"changed 2nd k/v"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid2, err)
	}

	// Make grandchild of root
	uuid3, err := datastore.NewVersion(uuid2, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid2, err)
	}

	// Delete the 2nd k/v
	uuid3req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid3, data.DataName(), key2)
	server.TestHTTP(t, "DELETE", uuid3req, nil)

	server.TestBadHTTP(t, "GET", uuid3req, nil)

	// Make sure the 2nd k/v is now missing for previous versions.
	server.TestBadHTTP(t, "GET", key2req, nil)
	server.TestBadHTTP(t, "GET", uuid2req, nil)

	// Make a child
	if err = datastore.Commit(uuid3, "my 3rd commit msg", []string{"deleted 2nd k/v"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid2, err)
	}
	uuid4, err := datastore.NewVersion(uuid3, "some child", nil)
	if err != nil {
		t.Fatalf("Unable to create new version off node %s: %v\n", uuid3, err)
	}

	// Change the 2nd k/v
	uuid4val := "we are reintroducing this k/v"
	uuid4req := fmt.Sprintf("%snode/%s/%s/key/%s", server.WebAPIPath, uuid4, data.DataName(), key2)
	server.TestHTTP(t, "POST", uuid4req, strings.NewReader(uuid4val))

	if err = datastore.Commit(uuid4, "commit node 4", []string{"we modified stuff"}); err != nil {
		t.Errorf("Unable to commit node %s: %v\n", uuid4, err)
	}

	// Make sure the 2nd k/v is correct for each of previous versions.
	returnValue = server.TestHTTP(t, "GET", key2req, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on first version, key %q: expected %s, got %s\n", key2, uuid4val, string(returnValue))
	}
	returnValue = server.TestHTTP(t, "GET", uuid2req, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on second version, key %q: expected %s, got %s\n", key2, uuid4val, string(returnValue))
	}
	returnValue = server.TestHTTP(t, "GET", uuid3req, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on third version, key %q: expected %s, got %s\n", key2, uuid4val, string(returnValue))
	}
	returnValue = server.TestHTTP(t, "GET", uuid4req, nil)
	if string(returnValue) != uuid4val {
		t.Errorf("Error on fourth version, key %q: expected %s, got %s\n", key2, uuid4val, string(returnValue))
	}
}
Example #7
0
// instanceSelector retrieves the data instance given its complete string name and
// forwards the request to that instance's HTTP handler.
func instanceSelector(c *web.C, h http.Handler) http.Handler {
	fn := func(w http.ResponseWriter, r *http.Request) {
		if httpUnavailable(w) {
			return
		}

		var err error
		dataname := dvid.InstanceName(c.URLParams["dataname"])
		uuid, ok := c.Env["uuid"].(dvid.UUID)
		if !ok {
			msg := fmt.Sprintf("Bad format for UUID %q\n", c.Env["uuid"])
			BadRequest(w, r, msg)
			return
		}
		data, err := datastore.GetDataByUUIDName(uuid, dataname)
		if err != nil {
			BadRequest(w, r, err)
			return
		}
		v, err := datastore.VersionFromUUID(uuid)
		if err != nil {
			BadRequest(w, r, err)
			return
		}

		if data.Versioned() {
			// Make sure we aren't trying mutable methods on committed nodes.
			locked, err := datastore.LockedUUID(uuid)
			if err != nil {
				BadRequest(w, r, err)
				return
			}
			if locked && data.IsMutationRequest(r.Method, c.URLParams["keyword"]) {
				BadRequest(w, r, "Cannot do %s on endpoint %q of locked node %s", r.Method, c.URLParams["keyword"], uuid)
				return
			}
		} else {
			// Map everything to root version.
			v, err = datastore.GetRepoRootVersion(v)
			if err != nil {
				BadRequest(w, r, err)
				return
			}
		}
		ctx := datastore.NewVersionedCtx(data, v)

		// Also set the web request information in case logging needs it downstream.
		ctx.SetRequestID(middleware.GetReqID(*c))

		// Handle DVID-wide query string commands like non-interactive call designations
		queryStrings := r.URL.Query()

		// All HTTP requests are interactive so let server tally request.
		interactive := queryStrings.Get("interactive")
		if interactive == "" || (interactive != "false" && interactive != "0") {
			GotInteractiveRequest()
		}

		// TODO: setup routing for data instances as well.
		if config != nil && config.AllowTiming() {
			w.Header().Set("Timing-Allow-Origin", "*")
		}
		data.ServeHTTP(uuid, ctx, w, r)
	}
	return http.HandlerFunc(fn)
}