func TestHandlerDeleteItemEtag(t *testing.T) {
s := mem.NewHandler()
s.Insert(context.TODO(), []*resource.Item{
{ID: "1", ETag: "a", Payload: map[string]interface{}{"id": "1"}},
})
index := resource.NewIndex()
test := index.Bind("test", schema.Schema{
Fields: schema.Fields{"foo": {Filterable: true}},
}, s, resource.DefaultConf)
r, _ := http.NewRequest("DELETE", "/test/2", nil)
r.Header.Set("If-Match", "a")
rm := &RouteMatch{
ResourcePath: []*ResourcePathComponent{
&ResourcePathComponent{
Name: "test",
Field: "id",
Value: "1",
Resource: test,
},
},
}
status, headers, body := itemDelete(context.TODO(), r, rm)
assert.Equal(t, http.StatusNoContent, status)
assert.Nil(t, headers)
assert.Nil(t, body)
l, err := s.Find(context.TODO(), resource.NewLookup(), 1, -1)
assert.NoError(t, err)
assert.Len(t, l.Items, 0)
}
// Lookup builds a Lookup object from the matched route
func (r RouteMatch) Lookup() (*resource.Lookup, *Error) {
l := resource.NewLookup()
// Append route fields to the query
for _, rp := range r.ResourcePath {
if rp.Value != nil {
l.AddQuery(schema.Query{schema.Equal{Field: rp.Field, Value: rp.Value}})
}
}
// Parse query string params
if sort := r.Params.Get("sort"); sort != "" {
if err := l.SetSort(sort, r.Resource().Validator()); err != nil {
return nil, &Error{422, fmt.Sprintf("Invalid `sort` paramter: %s", err), nil}
}
}
if filters, found := r.Params["filter"]; found {
// If several filter parameters are present, merge them using $and (see lookup.addFilter)
for _, filter := range filters {
if err := l.AddFilter(filter, r.Resource().Validator()); err != nil {
return nil, &Error{422, fmt.Sprintf("Invalid `filter` parameter: %s", err), nil}
}
}
}
if fields := r.Params.Get("fields"); fields != "" {
if err := l.SetSelector(fields, r.Resource()); err != nil {
return nil, &Error{422, fmt.Sprintf("Invalid `fields` paramter: %s", err), nil}
}
}
return l, nil
}
func TestHandlerDeleteList(t *testing.T) {
s := mem.NewHandler()
s.Insert(context.TODO(), []*resource.Item{
{ID: "1", Payload: map[string]interface{}{}},
{ID: "2", Payload: map[string]interface{}{}},
{ID: "3", Payload: map[string]interface{}{}},
{ID: "4", Payload: map[string]interface{}{}},
{ID: "5", Payload: map[string]interface{}{}},
})
index := resource.NewIndex()
test := index.Bind("test", schema.Schema{}, s, resource.DefaultConf)
r, _ := http.NewRequest("DELETE", "/test", bytes.NewBufferString("{}"))
rm := &RouteMatch{
ResourcePath: []*ResourcePathComponent{
&ResourcePathComponent{
Name: "test",
Resource: test,
},
},
}
status, headers, body := listDelete(context.TODO(), r, rm)
assert.Equal(t, http.StatusNoContent, status)
assert.Equal(t, http.Header{"X-Total": []string{"5"}}, headers)
assert.Nil(t, body)
l, err := s.Find(context.TODO(), resource.NewLookup(), 1, -1)
assert.NoError(t, err)
assert.Len(t, l.Items, 0)
}
// ParentsExist checks if the each intermediate parents in the path exist and
// return either a ErrNotFound or an error returned by on of the intermediate
// resource.
func (p ResourcePath) ParentsExist(ctx context.Context) error {
// First we check that we have no field conflict on the path (i.e.: two path
// components defining the same field with a different value)
fields := map[string]interface{}{}
for _, rp := range p {
if val, found := fields[rp.Field]; found && val != rp.Value {
return &Error{404, "Resource Path Conflict", nil}
}
fields[rp.Field] = rp.Value
}
// Check parents existence
parents := len(p) - 1
if parents <= 0 {
return nil
}
q := schema.Query{}
wait := sync.WaitGroup{}
defer wait.Wait()
c := make(chan error, parents)
for i := 0; i < parents; i++ {
if p[i].Value == nil {
continue
}
// Create a lookup with the parent path fields + the current path id
l := resource.NewLookup()
lq := append(q[:], schema.Equal{Field: "id", Value: p[i].Value})
l.AddQuery(lq)
// Execute all intermediate checkes in concurence
wait.Add(1)
go func(index int) {
defer wait.Done()
// Check if the resource exists
list, err := p[index].Resource.Find(ctx, l, 1, 1)
if err != nil {
c <- err
} else if len(list.Items) == 0 {
c <- &Error{404, "Parent Resource Not Found", nil}
} else {
c <- nil
}
}(i)
// Push the resource field=value for the next hops
q = append(q, schema.Equal{Field: p[i].Field, Value: p[i].Value})
}
// Fail on first error
for i := 0; i < parents; i++ {
if err := <-c; err != nil {
return err
}
}
return nil
}
// itemGet handles GET and HEAD resquests on an item URL
func (r *request) itemGet(ctx context.Context, route *RouteMatch) (status int, headers http.Header, body interface{}) {
lookup, e := route.Lookup()
if e != nil {
return e.Code, nil, e
}
list, err := route.Resource().Find(ctx, lookup, 1, 1)
if err != nil {
e = NewError(err)
return e.Code, nil, e
} else if len(list.Items) == 0 {
return ErrNotFound.Code, nil, ErrNotFound
}
item := list.Items[0]
// Handle conditional request: If-None-Match
if compareEtag(r.req.Header.Get("If-None-Match"), item.ETag) {
return 304, nil, nil
}
// Handle conditional request: If-Modified-Since
if r.req.Header.Get("If-Modified-Since") != "" {
if ifModTime, err := time.Parse(time.RFC1123, r.req.Header.Get("If-Modified-Since")); err != nil {
return 400, nil, &Error{400, "Invalid If-Modified-Since header", nil}
} else if item.Updated.Equal(ifModTime) || item.Updated.Before(ifModTime) {
return 304, nil, nil
}
}
item.Payload, err = lookup.ApplySelector(route.Resource(), item.Payload, func(path string, value interface{}) (*resource.Resource, map[string]interface{}, error) {
router, ok := IndexFromContext(ctx)
if !ok {
return nil, nil, errors.New("router not available in context")
}
rsrc, _, found := router.GetResource(path)
if !found {
return nil, nil, fmt.Errorf("invalid resource reference: %s", path)
}
l := resource.NewLookup()
l.AddQuery(schema.Query{schema.Equal{Field: "id", Value: value}})
list, _ := rsrc.Find(ctx, l, 1, 1)
if len(list.Items) == 1 {
item := list.Items[0]
return rsrc, item.Payload, nil
}
// If no item found, just return an empty dict so we don't error the main request
return rsrc, map[string]interface{}{}, nil
})
if err != nil {
e = NewError(err)
return e.Code, nil, e
}
return 200, nil, item
}
func listParamResolver(r *resource.Resource, p graphql.ResolveParams, params url.Values) (lookup *resource.Lookup, page int, perPage int, err error) {
page = 1
// Default value on non HEAD request for perPage is -1 (pagination disabled)
perPage = -1
if l := r.Conf().PaginationDefaultLimit; l > 0 {
perPage = l
}
if p, ok := p.Args["page"].(string); ok && p != "" {
i, err := strconv.ParseUint(p, 10, 32)
if err != nil {
return nil, 0, 0, errors.New("invalid `limit` parameter")
}
page = int(i)
}
if l, ok := p.Args["limit"].(string); ok && l != "" {
i, err := strconv.ParseUint(l, 10, 32)
if err != nil {
return nil, 0, 0, errors.New("invalid `limit` parameter")
}
perPage = int(i)
}
if perPage == -1 && page != 1 {
return nil, 0, 0, errors.New("cannot use `page' parameter with no `limit' paramter on a resource with no default pagination size")
}
lookup = resource.NewLookup()
if sort, ok := p.Args["sort"].(string); ok && sort != "" {
if err := lookup.SetSort(sort, r.Validator()); err != nil {
return nil, 0, 0, fmt.Errorf("invalid `sort` parameter: %v", err)
}
}
if filter, ok := p.Args["filter"].(string); ok && filter != "" {
if err := lookup.AddFilter(filter, r.Validator()); err != nil {
return nil, 0, 0, fmt.Errorf("invalid `filter` parameter: %v", err)
}
}
if params != nil {
if filter := params.Get("filter"); filter != "" {
if err := lookup.AddFilter(filter, r.Validator()); err != nil {
return nil, 0, 0, fmt.Errorf("invalid `filter` parameter: %v", err)
}
}
}
return
}
func TestHandlerDeleteItemFilterCondition(t *testing.T) {
s := mem.NewHandler()
s.Insert(context.TODO(), []*resource.Item{
{ID: "1", Payload: map[string]interface{}{"id": "1", "foo": "bar"}},
{ID: "2", Payload: map[string]interface{}{"id": "2", "foo": "bar"}},
{ID: "3", Payload: map[string]interface{}{"id": "3", "foo": "bar"}},
})
index := resource.NewIndex()
test := index.Bind("test", schema.Schema{
Fields: schema.Fields{"foo": {Filterable: true}},
}, s, resource.DefaultConf)
r, _ := http.NewRequest("DELETE", "/test/2", nil)
rm := &RouteMatch{
ResourcePath: []*ResourcePathComponent{
&ResourcePathComponent{
Name: "test",
Field: "id",
Value: "2",
Resource: test,
},
},
Params: url.Values{
"filter": []string{`{"foo": "baz"}`},
},
}
status, headers, body := itemDelete(context.TODO(), r, rm)
assert.Equal(t, http.StatusNotFound, status)
assert.Nil(t, headers)
if assert.IsType(t, body, &Error{}) {
err := body.(*Error)
assert.Equal(t, http.StatusNotFound, err.Code)
assert.Equal(t, "Not Found", err.Message)
}
l, err := s.Find(context.TODO(), resource.NewLookup(), 1, -1)
assert.NoError(t, err)
assert.Len(t, l.Items, 3)
}
// checkReferences checks that fields with the Reference validator reference an existing object
func (r *request) checkReferences(ctx context.Context, payload map[string]interface{}, s schema.Validator) *Error {
for name, value := range payload {
field := s.GetField(name)
if field == nil {
continue
}
// Check reference if validator is of type Reference
if field.Validator != nil {
if ref, ok := field.Validator.(*schema.Reference); ok {
router, ok := IndexFromContext(ctx)
if !ok {
return &Error{500, "Router not available in context", nil}
}
rsrc, _, found := router.GetResource(ref.Path)
if !found {
return &Error{500, fmt.Sprintf("Invalid resource reference for field `%s': %s", name, ref.Path), nil}
}
l := resource.NewLookup()
l.AddQuery(schema.Query{schema.Equal{Field: "id", Value: value}})
list, _ := rsrc.Find(ctx, l, 1, 1)
if len(list.Items) == 0 {
return &Error{404, fmt.Sprintf("Resource reference not found for field `%s'", name), nil}
}
}
}
// Check sub-schema if any
if field.Schema != nil && value != nil {
if subPayload, ok := value.(map[string]interface{}); ok {
if err := r.checkReferences(ctx, subPayload, field.Schema); err != nil {
return err
}
}
}
}
return nil
}
// listGet handles GET resquests on a resource URL
func (r *request) listGet(ctx context.Context, route *RouteMatch) (status int, headers http.Header, body interface{}) {
page := 1
perPage := 0
if route.Method != "HEAD" {
if l := route.Resource().Conf().PaginationDefaultLimit; l > 0 {
perPage = l
} else {
// Default value on non HEAD request for perPage is -1 (pagination disabled)
perPage = -1
}
if p := r.req.URL.Query().Get("page"); p != "" {
i, err := strconv.ParseUint(p, 10, 32)
if err != nil {
return 422, nil, &Error{422, "Invalid `page` paramter", nil}
}
page = int(i)
}
if l := r.req.URL.Query().Get("limit"); l != "" {
i, err := strconv.ParseUint(l, 10, 32)
if err != nil {
return 422, nil, &Error{422, "Invalid `limit` paramter", nil}
}
perPage = int(i)
}
if perPage == -1 && page != 1 {
return 422, nil, &Error{422, "Cannot use `page' parameter with no `limit' paramter on a resource with no default pagination size", nil}
}
}
lookup, e := route.Lookup()
if e != nil {
return e.Code, nil, e
}
list, err := route.Resource().Find(ctx, lookup, page, perPage)
if err != nil {
e = NewError(err)
return e.Code, nil, e
}
for _, item := range list.Items {
item.Payload, err = lookup.ApplySelector(route.Resource(), item.Payload, func(path string, value interface{}) (*resource.Resource, map[string]interface{}, error) {
router, ok := IndexFromContext(ctx)
if !ok {
return nil, nil, errors.New("router not available in context")
}
rsrc, _, found := router.GetResource(path)
if !found {
return nil, nil, fmt.Errorf("invalid resource reference: %s", path)
}
l := resource.NewLookup()
l.AddQuery(schema.Query{schema.Equal{Field: "id", Value: value}})
list, _ := rsrc.Find(ctx, l, 1, 1)
if len(list.Items) == 1 {
item := list.Items[0]
return rsrc, item.Payload, nil
}
// If no item found, just return an empty dict so we don't error the main request
return rsrc, map[string]interface{}{}, nil
})
if err != nil {
e = NewError(err)
return e.Code, nil, e
}
}
return 200, nil, list
}
func callGetSort(s string, v schema.Validator) []string {
l := resource.NewLookup()
l.SetSort(s, v)
return getSort(l)
}
func callGetQuery(q schema.Query) (bson.M, error) {
l := resource.NewLookup()
l.AddQuery(q)
return getQuery(l)
}
},
},
},
}
)
func SetAuthUserResource(us *resource.Resource) {
field, _ := AuthSchema["access"]
field.HookParams[0].Param = us
}
var CheckAccess = func(value interface{}, params []interface{}) interface{} {
users, users_ok := params[0].(*resource.Resource)
username, u_ok := params[1].(string)
password, p_ok := params[2].(string)
if users_ok && u_ok && p_ok {
l := resource.NewLookup()
l.AddQuery(schema.Query{schema.Equal{Field: "username", Value: username}})
list, err := users.Find(context.Background(), l, 1, 1)
if err == nil && len(list.Items) == 1 {
user := list.Items[0]
if schema.VerifyPassword(user.Payload["password"], []byte(password)) {
return true
}
}
}
return false
}
func TestFind(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode.")
}
s, err := mgo.Dial("")
if !assert.NoError(t, err) {
return
}
defer cleanup(s, "testfind")()
h := NewHandler(s, "testfind", "test")
h2 := NewHandler(s, "testfind", "test2")
items := []*resource.Item{
{ID: "1", Payload: map[string]interface{}{"id": "1", "name": "a", "age": 1}},
{ID: "2", Payload: map[string]interface{}{"id": "2", "name": "b", "age": 2}},
{ID: "3", Payload: map[string]interface{}{"id": "3", "name": "c", "age": 3}},
{ID: "4", Payload: map[string]interface{}{"id": "4", "name": "d", "age": 4}},
}
ctx := context.Background()
assert.NoError(t, h.Insert(ctx, items))
assert.NoError(t, h2.Insert(ctx, items))
lookup := resource.NewLookup()
l, err := h.Find(ctx, lookup, 1, -1)
if assert.NoError(t, err) {
assert.Equal(t, 1, l.Page)
assert.Equal(t, -1, l.Total) // Mongo doesn't support total counting
assert.Len(t, l.Items, 4)
// Do not check result's content as its order is unpredictable
}
lookup = resource.NewLookupWithQuery(schema.Query{
schema.Equal{Field: "name", Value: "c"},
})
l, err = h.Find(ctx, lookup, 1, 100)
if assert.NoError(t, err) {
assert.Equal(t, 1, l.Page)
assert.Equal(t, -1, l.Total) // Mongo doesn't support total counting
if assert.Len(t, l.Items, 1) {
item := l.Items[0]
assert.Equal(t, "3", item.ID)
assert.Equal(t, map[string]interface{}{"id": "3", "name": "c", "age": 3}, item.Payload)
}
}
lookup = resource.NewLookupWithQuery(schema.Query{
schema.In{Field: "name", Values: []schema.Value{"c", "d"}},
})
lookup.SetSorts([]string{"name"})
l, err = h.Find(ctx, lookup, 1, 100)
if assert.NoError(t, err) {
assert.Equal(t, 1, l.Page)
assert.Equal(t, -1, l.Total) // Mongo doesn't support total counting
if assert.Len(t, l.Items, 2) {
item := l.Items[0]
assert.Equal(t, "3", item.ID)
assert.Equal(t, map[string]interface{}{"id": "3", "name": "c", "age": 3}, item.Payload)
item = l.Items[1]
assert.Equal(t, "4", item.ID)
assert.Equal(t, map[string]interface{}{"id": "4", "name": "d", "age": 4}, item.Payload)
}
}
lookup = resource.NewLookupWithQuery(schema.Query{
schema.Equal{Field: "id", Value: "3"},
})
l, err = h.Find(ctx, lookup, 1, 1)
if assert.NoError(t, err) {
assert.Equal(t, 1, l.Page)
assert.Equal(t, -1, l.Total) // Mongo doesn't support total counting
if assert.Len(t, l.Items, 1) {
item := l.Items[0]
assert.Equal(t, "3", item.ID)
assert.Equal(t, map[string]interface{}{"id": "3", "name": "c", "age": 3}, item.Payload)
}
}
lookup = resource.NewLookupWithQuery(schema.Query{
schema.Equal{Field: "id", Value: "10"},
})
l, err = h.Find(ctx, lookup, 1, 1)
if assert.NoError(t, err) {
assert.Equal(t, 1, l.Page)
assert.Equal(t, -1, l.Total) // Mongo doesn't support total counting
assert.Len(t, l.Items, 0)
}
lookup = resource.NewLookupWithQuery(schema.Query{
schema.In{Field: "id", Values: []schema.Value{"3", "4", "10"}},
})
l, err = h.Find(ctx, lookup, 1, -1)
if assert.NoError(t, err) {
assert.Equal(t, 1, l.Page)
assert.Equal(t, -1, l.Total) // Mongo doesn't support total counting
assert.Len(t, l.Items, 2)
}
}
// findRoute recursively route a (sub)resource request
func findRoute(ctx context.Context, path string, index resource.Index, route *RouteMatch) *Error {
// Split the path into path components
c := strings.Split(strings.Trim(path, "/"), "/")
// Shift the resource name from the path components
name, c := c[0], c[1:]
resourcePath := name
if prefix := route.ResourcePath.Path(); prefix != "" {
resourcePath = strings.Join([]string{prefix, name}, ".")
}
// First component must match a resource
if rsrc, _, found := index.GetResource(resourcePath); found {
rp := ResourcePathComponent{
Name: name,
Resource: rsrc,
}
if len(c) >= 1 {
// If there are some components left, the path targets an item or an alias
// Shift the item id from the path components
var id string
id, c = c[0], c[1:]
// Handle sub-resources (/resource1/id1/resource2/id2)
if len(c) >= 1 {
subResourcePath := strings.Join([]string{resourcePath, c[0]}, ".")
if _, field, found := index.GetResource(subResourcePath); found {
// Check if the current (intermediate) item exists before going farther
l := resource.NewLookup()
q := schema.Query{}
for _, rp := range route.ResourcePath {
if rp.Value != nil {
q = append(q, schema.Equal{Field: rp.Field, Value: rp.Value})
}
}
q = append(q, schema.Equal{Field: "id", Value: id})
l.AddQuery(q)
list, err := rsrc.Find(ctx, l, 1, 1)
if err != nil {
return NewError(err)
} else if len(list.Items) == 0 {
return ErrNotFound
}
rp.Field = field
rp.Value = id
route.ResourcePath = append(route.ResourcePath, rp)
// Recurse to match the sub-path
path = strings.Join(c, "/")
if err := findRoute(ctx, path, index, route); err != nil {
return err
}
} else {
route.ResourcePath = ResourcePath{}
return &Error{404, "Resource Not Found", nil}
}
return nil
}
// Handle aliases (/resource/alias or /resource1/id1/resource2/alias)
if alias, found := rsrc.GetAlias(id); found {
// Apply aliases query to the request
for key, values := range alias {
for _, value := range values {
route.Params.Add(key, value)
}
}
} else {
// Set the id route field
rp.Field = "id"
rp.Value = id
}
}
route.ResourcePath = append(route.ResourcePath, rp)
return nil
}
route.ResourcePath = ResourcePath{}
return &Error{404, "Resource Not Found", nil}
}
