s3api: add S3 Tables integration layer

- Create s3api_tables.go to integrate S3 Tables with S3 API server
- Implement S3 Tables route matcher for X-Amz-Target header
- Register S3 Tables routes with API router
- Provide gRPC filer client interface for S3 Tables handlers
- All S3 Tables operations accessible via S3 API endpoint

weed/s3api/s3api_tables.go

@@ -0,0 +1,122 @@
+package s3api
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gorilla/mux"
+
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
+	. "github.com/seaweedfs/seaweedfs/weed/s3api/s3_constants"
+	"github.com/seaweedfs/seaweedfs/weed/s3api/s3tables"
+)
+
+// S3TablesApiServer wraps the S3 Tables handler with S3ApiServer's filer access
+type S3TablesApiServer struct {
+	s3a     *S3ApiServer
+	handler *s3tables.S3TablesHandler
+}
+
+// NewS3TablesApiServer creates a new S3 Tables API server
+func NewS3TablesApiServer(s3a *S3ApiServer) *S3TablesApiServer {
+	filerAddr := ""
+	if len(s3a.option.Filers) > 0 {
+		filerAddr = string(s3a.option.Filers[0])
+	}
+
+	return &S3TablesApiServer{
+		s3a:     s3a,
+		handler: s3tables.NewS3TablesHandler(filerAddr),
+	}
+}
+
+// SetRegion sets the AWS region for ARN generation
+func (st *S3TablesApiServer) SetRegion(region string) {
+	st.handler.SetRegion(region)
+}
+
+// SetAccountID sets the AWS account ID for ARN generation
+func (st *S3TablesApiServer) SetAccountID(accountID string) {
+	st.handler.SetAccountID(accountID)
+}
+
+// S3TablesHandler handles S3 Tables API requests
+func (st *S3TablesApiServer) S3TablesHandler(w http.ResponseWriter, r *http.Request) {
+	st.handler.HandleRequest(w, r, st)
+}
+
+// WithFilerClient implements the s3tables.FilerClient interface
+func (st *S3TablesApiServer) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) error {
+	return st.s3a.WithFilerClient(streamingMode, fn)
+}
+
+// registerS3TablesRoutes registers S3 Tables API routes
+func (s3a *S3ApiServer) registerS3TablesRoutes(router *mux.Router) {
+	// Create S3 Tables handler
+	s3TablesApi := NewS3TablesApiServer(s3a)
+
+	// S3 Tables API uses POST with x-amz-target header
+	// The AWS CLI sends requests with:
+	// - Content-Type: application/x-amz-json-1.1
+	// - X-Amz-Target: S3Tables.<OperationName>
+
+	// Matcher function to identify S3 Tables requests
+	s3TablesMatcher := func(r *http.Request, rm *mux.RouteMatch) bool {
+		// Check for X-Amz-Target header with S3Tables prefix
+		target := r.Header.Get("X-Amz-Target")
+		if target != "" && strings.HasPrefix(target, "S3Tables.") {
+			return true
+		}
+
+		// Also check for specific S3 Tables actions in query string (CLI fallback)
+		action := r.URL.Query().Get("Action")
+		if isS3TablesAction(action) {
+			return true
+		}
+
+		return false
+	}
+
+	// Register the S3 Tables handler
+	router.Methods(http.MethodPost).Path("/").MatcherFunc(s3TablesMatcher).
+		HandlerFunc(track(s3a.iam.Auth(func(w http.ResponseWriter, r *http.Request) {
+			s3TablesApi.S3TablesHandler(w, r)
+		}, ACTION_ADMIN), "S3Tables"))
+
+	glog.V(1).Infof("S3 Tables API enabled")
+}
+
+// isS3TablesAction checks if the action is an S3 Tables operation
+func isS3TablesAction(action string) bool {
+	s3TablesActions := []string{
+		"CreateTableBucket",
+		"GetTableBucket",
+		"ListTableBuckets",
+		"DeleteTableBucket",
+		"PutTableBucketPolicy",
+		"GetTableBucketPolicy",
+		"DeleteTableBucketPolicy",
+		"CreateNamespace",
+		"GetNamespace",
+		"ListNamespaces",
+		"DeleteNamespace",
+		"CreateTable",
+		"GetTable",
+		"ListTables",
+		"DeleteTable",
+		"PutTablePolicy",
+		"GetTablePolicy",
+		"DeleteTablePolicy",
+		"TagResource",
+		"ListTagsForResource",
+		"UntagResource",
+	}
+
+	for _, a := range s3TablesActions {
+		if a == action {
+			return true
+		}
+	}
+	return false
+}