Files
graph/dql/parser_fuzz_test.go
zeekay f5aaeb712e Hanzo Graph — the engine, on zapdb, ZAP-native
Derived from Dgraph (github.com/dgraph-io/dgraph) at commit 64804bd2, Apache-2.0.
See NOTICE.

WHAT THIS IS. The graph engine as a Go library: posting lists, the DQL parser,
the type and tokenizer system, the index and schema layers, and the wire types.
39,170 lines of the upstream's 166,337.

THE STORE is github.com/luxfi/zapdb, a Badger fork that kept the package name,
the subpackages (options, pb, y) and the API — Open, OpenManaged, DB, Options —
so the 74 import sites are aliased rather than rewritten.

THE CODEC is ZAP. zapdb serializes with ZAP, not protobuf: its pb package builds
the ZAP types by default and the protobuf ones only under `-tags grpc`, a path
that does not compile (table/builder.go calls pb.Marshal, which that tag
removes). One call site in posting needed converting; every other type here is
Hanzo's own protobuf and is untouched.

NO TRANSPORT. An embedded engine dials nothing, so nothing here imports
google.golang.org/grpc. Removed: 20 transport functions in x, the generated
service stubs for Raft, Zero and Worker (1,657 lines), and the JWT helper —
identity belongs to IAM. The core called none of them.

NOT KEPT: worker, conn, raftwal, the cluster commands, the GraphQL layer and the
test harnesses. `query`, the DQL execution engine, went with them because it
depends on worker; parsing DQL is available here, executing it is not.

The history of the upstream project lives at github.com/dgraph-io/dgraph. This
repository begins at the derivation because three quarters of that history
describes code this fork does not carry.
2026-08-20 21:26:27 -07:00

74 lines
1.4 KiB
Go

/*
* SPDX-FileCopyrightText: © 2017-2026 Istari Digital, Inc.
* SPDX-License-Identifier: Apache-2.0
*/
package dql
import (
"archive/tar"
"bytes"
"compress/gzip"
"io"
"os"
"testing"
)
const (
corpusTarFile = "fuzz-data/corpus.tar.gz"
)
func FuzzTestParser(f *testing.F) {
// add the corpus data to the test
fd, err := os.Open(corpusTarFile)
if err != nil {
f.Fatalf("error opening corpus tar file: %v", err)
}
defer func() {
if err := fd.Close(); err != nil {
f.Logf("error closing corpus tar file: %v", err)
}
}()
gzr, err := gzip.NewReader(fd)
if err != nil {
f.Fatalf("error reading corpus tar file: %v", err)
}
defer func() {
if err := gzr.Close(); err != nil {
f.Logf("error closing corpus tar file: %v", err)
}
}()
tr := tar.NewReader(gzr)
for {
header, err := tr.Next()
if err == io.EOF {
break
}
if err != nil {
f.Fatalf("error while reading corpus tar file: %v", err)
}
switch header.Typeflag {
case tar.TypeReg:
buf := new(bytes.Buffer)
if _, err := io.Copy(buf, tr); err != nil {
f.Fatalf("error while copying file [%v]: %v", header.Name, err)
}
f.Add(buf.Bytes())
f.Logf("adding input: %v", buf.String())
}
}
f.Fuzz(func(t *testing.T, in []byte) {
defer func() {
if err := recover(); err != nil {
t.Errorf("DQL parsing failed for input [%x] with error: [%v]", in, err)
}
}()
_, _ = Parse(Request{Str: string(in)})
})
}