--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2015 Red Hat
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+
+#include <errno.h>
+#include "include/types.h"
+#include "ceph_ver.h"
+#include "include/encoding.h"
+#include "include/ceph_features.h"
+#include "common/ceph_argparse.h"
+#include "common/Formatter.h"
+#include "common/errno.h"
+#include "msg/Message.h"
+#include "include/assert.h"
+
+#define TYPE(t)
+#define TYPE_STRAYDATA(t)
+#define TYPE_NONDETERMINISTIC(t)
+#define TYPE_FEATUREFUL(t)
+#define TYPE_FEATUREFUL_STRAYDATA(t)
+#define TYPE_FEATUREFUL_NONDETERMINISTIC(t)
+#define TYPE_FEATUREFUL_NOCOPY(t)
+#define TYPE_NOCOPY(t)
+#define MESSAGE(t)
+#include "types.h"
+#undef TYPE
+#undef TYPE_STRAYDATA
+#undef TYPE_NONDETERMINISTIC
+#undef TYPE_NOCOPY
+#undef TYPE_FEATUREFUL
+#undef TYPE_FEATUREFUL_STRAYDATA
+#undef TYPE_FEATUREFUL_NONDETERMINISTIC
+#undef TYPE_FEATUREFUL_NOCOPY
+#undef MESSAGE
+
+#define MB(m) ((m) * 1024 * 1024)
+
+void usage(ostream &out)
+{
+ out << "usage: ceph-dencoder [commands ...]" << std::endl;
+ out << "\n";
+ out << " version print version string (to stdout)\n";
+ out << "\n";
+ out << " import <encfile> read encoded data from encfile\n";
+ out << " export <outfile> write encoded data to outfile\n";
+ out << "\n";
+ out << " set_features <num> set feature bits used for encoding\n";
+ out << " get_features print feature bits (int) to stdout\n";
+ out << "\n";
+ out << " list_types list supported types\n";
+ out << " type <classname> select in-memory type\n";
+ out << " skip <num> skip <num> leading bytes before decoding\n";
+ out << " decode decode into in-memory object\n";
+ out << " encode encode in-memory object\n";
+ out << " dump_json dump in-memory object as json (to stdout)\n";
+ out << " hexdump print encoded data in hex\n";
+ out << "\n";
+ out << " copy copy object (via operator=)\n";
+ out << " copy_ctor copy object (via copy ctor)\n";
+ out << "\n";
+ out << " count_tests print number of generated test objects (to stdout)\n";
+ out << " select_test <n> select generated test object as in-memory object\n";
+ out << " is_deterministic exit w/ success if type encodes deterministically\n";
+}
+struct Dencoder {
+ virtual ~Dencoder() {}
+ virtual string decode(bufferlist bl, uint64_t seek) = 0;
+ virtual void encode(bufferlist& out, uint64_t features) = 0;
+ virtual void dump(ceph::Formatter *f) = 0;
+ virtual void copy() {
+ cerr << "copy operator= not supported" << std::endl;
+ }
+ virtual void copy_ctor() {
+ cerr << "copy ctor not supported" << std::endl;
+ }
+ virtual void generate() = 0;
+ virtual int num_generated() = 0;
+ virtual string select_generated(unsigned n) = 0;
+ virtual bool is_deterministic() = 0;
+ //virtual void print(ostream& out) = 0;
+};
+
+template<class T>
+class DencoderBase : public Dencoder {
+protected:
+ T* m_object;
+ list<T*> m_list;
+ bool stray_okay;
+ bool nondeterministic;
+
+public:
+ DencoderBase(bool stray_okay, bool nondeterministic)
+ : m_object(new T),
+ stray_okay(stray_okay),
+ nondeterministic(nondeterministic) {}
+ ~DencoderBase() override {
+ delete m_object;
+ }
+
+ string decode(bufferlist bl, uint64_t seek) override {
+ bufferlist::iterator p = bl.begin();
+ p.seek(seek);
+ try {
+ ::decode(*m_object, p);
+ }
+ catch (buffer::error& e) {
+ return e.what();
+ }
+ if (!stray_okay && !p.end()) {
+ ostringstream ss;
+ ss << "stray data at end of buffer, offset " << p.get_off();
+ return ss.str();
+ }
+ return string();
+ }
+
+ void encode(bufferlist& out, uint64_t features) override = 0;
+
+ void dump(ceph::Formatter *f) override {
+ m_object->dump(f);
+ }
+ void generate() override {
+ T::generate_test_instances(m_list);
+ }
+ int num_generated() override {
+ return m_list.size();
+ }
+ string select_generated(unsigned i) override {
+ // allow 0- or 1-based (by wrapping)
+ if (i == 0)
+ i = m_list.size();
+ if ((i == 0) || (i > m_list.size()))
+ return "invalid id for generated object";
+ m_object = *(std::next(m_list.begin(), i-1));
+ return string();
+ }
+
+ bool is_deterministic() override {
+ return !nondeterministic;
+ }
+};
+
+template<class T>
+class DencoderImplNoFeatureNoCopy : public DencoderBase<T> {
+public:
+ DencoderImplNoFeatureNoCopy(bool stray_ok, bool nondeterministic)
+ : DencoderBase<T>(stray_ok, nondeterministic) {}
+ void encode(bufferlist& out, uint64_t features) override {
+ out.clear();
+ ::encode(*this->m_object, out);
+ }
+};
+
+template<class T>
+class DencoderImplNoFeature : public DencoderImplNoFeatureNoCopy<T> {
+public:
+ DencoderImplNoFeature(bool stray_ok, bool nondeterministic)
+ : DencoderImplNoFeatureNoCopy<T>(stray_ok, nondeterministic) {}
+ void copy() override {
+ T *n = new T;
+ *n = *this->m_object;
+ delete this->m_object;
+ this->m_object = n;
+ }
+ void copy_ctor() override {
+ T *n = new T(*this->m_object);
+ delete this->m_object;
+ this->m_object = n;
+ }
+};
+
+template<class T>
+class DencoderImplFeaturefulNoCopy : public DencoderBase<T> {
+public:
+ DencoderImplFeaturefulNoCopy(bool stray_ok, bool nondeterministic)
+ : DencoderBase<T>(stray_ok, nondeterministic) {}
+ void encode(bufferlist& out, uint64_t features) override {
+ out.clear();
+ ::encode(*(this->m_object), out, features);
+ }
+};
+
+template<class T>
+class DencoderImplFeatureful : public DencoderImplFeaturefulNoCopy<T> {
+public:
+ DencoderImplFeatureful(bool stray_ok, bool nondeterministic)
+ : DencoderImplFeaturefulNoCopy<T>(stray_ok, nondeterministic) {}
+ void copy() override {
+ T *n = new T;
+ *n = *this->m_object;
+ delete this->m_object;
+ this->m_object = n;
+ }
+ void copy_ctor() override {
+ T *n = new T(*this->m_object);
+ delete this->m_object;
+ this->m_object = n;
+ }
+};
+
+template<class T>
+class MessageDencoderImpl : public Dencoder {
+ T *m_object;
+ list<T*> m_list;
+
+public:
+ MessageDencoderImpl() {
+ m_object = new T;
+ }
+ ~MessageDencoderImpl() override {
+ m_object->put();
+ }
+
+ string decode(bufferlist bl, uint64_t seek) override {
+ bufferlist::iterator p = bl.begin();
+ p.seek(seek);
+ try {
+ Message *n = decode_message(g_ceph_context, 0, p);
+ if (!n)
+ throw std::runtime_error("failed to decode");
+ if (n->get_type() != m_object->get_type()) {
+ stringstream ss;
+ ss << "decoded type " << n->get_type() << " instead of expected " << m_object->get_type();
+ throw std::runtime_error(ss.str());
+ }
+ m_object->put();
+ m_object = static_cast<T *>(n);
+ }
+ catch (buffer::error& e) {
+ return e.what();
+ }
+ if (!p.end()) {
+ ostringstream ss;
+ ss << "stray data at end of buffer, offset " << p.get_off();
+ return ss.str();
+ }
+ return string();
+ }
+
+ void encode(bufferlist& out, uint64_t features) override {
+ out.clear();
+ encode_message(m_object, features, out);
+ }
+
+ void dump(ceph::Formatter *f) override {
+ m_object->dump(f);
+ }
+ void generate() override {
+ //T::generate_test_instances(m_list);
+ }
+ int num_generated() override {
+ return m_list.size();
+ }
+ string select_generated(unsigned i) override {
+ // allow 0- or 1-based (by wrapping)
+ if (i == 0)
+ i = m_list.size();
+ if ((i == 0) || (i > m_list.size()))
+ return "invalid id for generated object";
+ m_object->put();
+ m_object = *(std::next(m_list.begin(), i-1));
+ return string();
+ }
+ bool is_deterministic() override {
+ return true;
+ }
+
+ //void print(ostream& out) {
+ //out << m_object << std::endl;
+ //}
+};
+
+
+
+int main(int argc, const char **argv)
+{
+ // dencoders
+ map<string,Dencoder*> dencoders;
+
+#define T_STR(x) #x
+#define T_STRINGIFY(x) T_STR(x)
+#define TYPE(t) dencoders[T_STRINGIFY(t)] = new DencoderImplNoFeature<t>(false, false);
+#define TYPE_STRAYDATA(t) dencoders[T_STRINGIFY(t)] = new DencoderImplNoFeature<t>(true, false);
+#define TYPE_NONDETERMINISTIC(t) dencoders[T_STRINGIFY(t)] = new DencoderImplNoFeature<t>(false, true);
+#define TYPE_FEATUREFUL(t) dencoders[T_STRINGIFY(t)] = new DencoderImplFeatureful<t>(false, false);
+#define TYPE_FEATUREFUL_STRAYDATA(t) dencoders[T_STRINGIFY(t)] = new DencoderImplFeatureful<t>(true, false);
+#define TYPE_FEATUREFUL_NONDETERMINISTIC(t) dencoders[T_STRINGIFY(t)] = new DencoderImplFeatureful<t>(false, true);
+#define TYPE_FEATUREFUL_NOCOPY(t) dencoders[T_STRINGIFY(t)] = new DencoderImplFeaturefulNoCopy<t>(false, false);
+#define TYPE_NOCOPY(t) dencoders[T_STRINGIFY(t)] = new DencoderImplNoFeatureNoCopy<t>(false, false);
+#define MESSAGE(t) dencoders[T_STRINGIFY(t)] = new MessageDencoderImpl<t>;
+#include "types.h"
+#undef TYPE
+#undef TYPE_STRAYDATA
+#undef TYPE_NONDETERMINISTIC
+#undef TYPE_NOCOPY
+#undef TYPE_FEATUREFUL
+#undef TYPE_FEATUREFUL_STRAYDATA
+#undef TYPE_FEATUREFUL_NONDETERMINISTIC
+#undef TYPE_FEATUREFUL_NOCOPY
+#undef T_STR
+#undef T_STRINGIFY
+
+ vector<const char*> args;
+ argv_to_vec(argc, argv, args);
+ env_to_vec(args);
+
+ Dencoder *den = NULL;
+ uint64_t features = CEPH_FEATURES_SUPPORTED_DEFAULT;
+ bufferlist encbl;
+ uint64_t skip = 0;
+
+ if (args.empty()) {
+ cerr << "-h for help" << std::endl;
+ exit(1);
+ }
+ for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ++i) {
+ string err;
+
+ if (*i == string("help") || *i == string("-h") || *i == string("--help")) {
+ usage(cout);
+ exit(0);
+ } else if (*i == string("version")) {
+ cout << CEPH_GIT_NICE_VER << std::endl;
+ } else if (*i == string("list_types")) {
+ for (map<string,Dencoder*>::iterator p = dencoders.begin();
+ p != dencoders.end();
+ ++p)
+ cout << p->first << std::endl;
+ exit(0);
+ } else if (*i == string("type")) {
+ ++i;
+ if (i == args.end()) {
+ cerr << "expecting type" << std::endl;
+ exit(1);
+ }
+ string cname = *i;
+ if (!dencoders.count(cname)) {
+ cerr << "class '" << cname << "' unknown" << std::endl;
+ exit(1);
+ }
+ den = dencoders[cname];
+ den->generate();
+ } else if (*i == string("skip")) {
+ ++i;
+ if (i == args.end()) {
+ cerr << "expecting byte count" << std::endl;
+ exit(1);
+ }
+ skip = atoi(*i);
+ } else if (*i == string("get_features")) {
+ cout << CEPH_FEATURES_SUPPORTED_DEFAULT << std::endl;
+ exit(0);
+ } else if (*i == string("set_features")) {
+ ++i;
+ if (i == args.end()) {
+ cerr << "expecting features" << std::endl;
+ exit(1);
+ }
+ features = atoll(*i);
+ } else if (*i == string("encode")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ den->encode(encbl, features | CEPH_FEATURE_RESERVED); // hack for OSDMap
+ } else if (*i == string("decode")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ err = den->decode(encbl, skip);
+ } else if (*i == string("copy_ctor")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ den->copy_ctor();
+ } else if (*i == string("copy")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ den->copy();
+ } else if (*i == string("dump_json")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ JSONFormatter jf(true);
+ jf.open_object_section("object");
+ den->dump(&jf);
+ jf.close_section();
+ jf.flush(cout);
+ cout << std::endl;
+
+ } else if (*i == string("hexdump")) {
+ encbl.hexdump(cout);
+ } else if (*i == string("import")) {
+ ++i;
+ if (i == args.end()) {
+ cerr << "expecting filename" << std::endl;
+ exit(1);
+ }
+ int r;
+ if (*i == string("-")) {
+ *i = "stdin";
+ // Read up to 1mb if stdin specified
+ r = encbl.read_fd(STDIN_FILENO, MB(1));
+ } else {
+ r = encbl.read_file(*i, &err);
+ }
+ if (r < 0) {
+ cerr << "error reading " << *i << ": " << err << std::endl;
+ exit(1);
+ }
+
+ } else if (*i == string("export")) {
+ ++i;
+ if (i == args.end()) {
+ cerr << "expecting filename" << std::endl;
+ exit(1);
+ }
+ int fd = ::open(*i, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+ if (fd < 0) {
+ cerr << "error opening " << *i << " for write: " << cpp_strerror(errno) << std::endl;
+ exit(1);
+ }
+ int r = encbl.write_fd(fd);
+ if (r < 0) {
+ cerr << "error writing " << *i << ": " << cpp_strerror(errno) << std::endl;
+ exit(1);
+ }
+ ::close(fd);
+
+ } else if (*i == string("count_tests")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ cout << den->num_generated() << std::endl;
+ } else if (*i == string("select_test")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ ++i;
+ if (i == args.end()) {
+ cerr << "expecting instance number" << std::endl;
+ exit(1);
+ }
+ int n = atoi(*i);
+ err = den->select_generated(n);
+ } else if (*i == string("is_deterministic")) {
+ if (!den) {
+ cerr << "must first select type with 'type <name>'" << std::endl;
+ exit(1);
+ }
+ if (den->is_deterministic())
+ exit(0);
+ else
+ exit(1);
+ } else {
+ cerr << "unknown option '" << *i << "'" << std::endl;
+ exit(1);
+ }
+ if (err.length()) {
+ cerr << "error: " << err << std::endl;
+ exit(1);
+ }
+ }
+ return 0;
+}
Code Review / stor4nfv.git / blobdiff