1 files changed, 667 insertions, 0 deletions

diff --git a/storage/spider/hs_client/hstcpcli.cpp b/storage/spider/hs_client/hstcpcli.cpp
new file mode 100644
index 00000000..4c93b5a3
--- /dev/null
+++ b/storage/spider/hs_client/hstcpcli.cpp
@@ -0,0 +1,667 @@
+
+// vim:sw=2:ai
+
+/*
+ * Copyright (C) 2010-2011 DeNA Co.,Ltd.. All rights reserved.
+ * Copyright (C) 2011-2017 Kentoku SHIBA
+ * See COPYRIGHT.txt for details.
+ */
+
+#include <my_global.h>
+#include "mysql_version.h"
+#include "hs_compat.h"
+#if MYSQL_VERSION_ID < 50500
+#include "mysql_priv.h"
+#include <mysql/plugin.h>
+#else
+#include "sql_priv.h"
+#include "probes_mysql.h"
+#include "sql_class.h"
+#endif
+
+#include "hstcpcli.hpp"
+#include "auto_file.hpp"
+#include "string_util.hpp"
+#include "auto_addrinfo.hpp"
+#include "escape.hpp"
+#include "util.hpp"
+
+/* TODO */
+#if !defined(__linux__) && !defined(__FreeBSD__) && !defined(MSG_NOSIGNAL)
+#define MSG_NOSIGNAL 0
+#endif
+
+#define DBG(x)
+
+namespace dena {
+
+hstresult::hstresult()
+{
+  SPD_INIT_DYNAMIC_ARRAY2(&flds, sizeof(string_ref), NULL, 16, 16,
+    MYF(MY_WME));
+}
+
+hstresult::~hstresult()
+{
+  delete_dynamic(&flds);
+}
+
+struct hstcpcli : public hstcpcli_i, private noncopyable {
+  hstcpcli(const socket_args& args);
+  virtual ~hstcpcli();
+  virtual void close();
+  virtual int reconnect();
+  virtual bool stable_point();
+  virtual void request_buf_open_index(size_t pst_id, const char *dbn,
+    const char *tbl, const char *idx, const char *retflds, const char *filflds);
+  virtual void request_buf_auth(const char *secret, const char *typ);
+  virtual void request_buf_exec_generic(size_t pst_id, const string_ref& op,
+    const string_ref *kvs, size_t kvslen, uint32 limit, uint32 skip,
+    const string_ref& mod_op, const string_ref *mvs, size_t mvslen,
+    const hstcpcli_filter *fils, size_t filslen, int invalues_keypart,
+    const string_ref *invalues, size_t invalueslen);
+  virtual size_t request_buf_append(const char *start, const char *finish);
+  virtual void request_reset();
+  virtual int request_send();
+  virtual int response_recv(size_t& num_flds_r);
+  virtual int get_result(hstresult& result);
+  virtual const string_ref *get_next_row();
+  virtual const string_ref *get_next_row_from_result(hstresult& result);
+  virtual size_t get_row_size();
+  virtual size_t get_row_size_from_result(hstresult& result);
+  virtual void response_buf_remove();
+  virtual int get_error_code();
+  virtual String& get_error();
+  virtual void clear_error();
+  virtual int set_timeout(int send_timeout, int recv_timeout);
+  virtual size_t get_num_req_bufd() { return num_req_bufd; }
+  virtual size_t get_num_req_sent() { return num_req_sent; }
+  virtual size_t get_num_req_rcvd() { return num_req_rcvd; }
+  virtual size_t get_response_end_offset() { return response_end_offset; }
+  virtual const char *get_readbuf_begin() { return readbuf.begin(); }
+  virtual const char *get_readbuf_end() { return readbuf.end(); }
+  virtual const char *get_writebuf_begin() { return writebuf.begin(); }
+  virtual size_t get_writebuf_size() { return writebuf.size(); }
+  virtual void write_error_to_log(const char *func_name, const char *file_name,
+    ulong line_no);
+ private:
+  int read_more();
+  int set_error(int code, const String& str);
+  int set_error(int code, const char *str);
+ private:
+  auto_file fd;
+  socket_args sargs;
+  string_buffer readbuf;
+  string_buffer writebuf;
+  size_t response_end_offset; /* incl newline */
+  size_t cur_row_offset;
+  size_t cur_row_size;
+  size_t num_flds;
+  size_t num_req_bufd; /* buffered but not yet sent */
+  size_t num_req_sent; /* sent but not yet received */
+  size_t num_req_rcvd; /* received but not yet removed */
+  int error_code;
+  String error_str;
+  DYNAMIC_ARRAY flds;
+  int errno_buf;
+};
+
+hstcpcli::hstcpcli(const socket_args& args)
+  : sargs(args), response_end_offset(0), cur_row_offset(0), cur_row_size(0),
+    num_flds(0), num_req_bufd(0), num_req_sent(0), num_req_rcvd(0),
+    error_code(0), errno_buf(0)
+{
+  String err;
+  SPD_INIT_DYNAMIC_ARRAY2(&flds, sizeof(string_ref), NULL, 16, 16, MYF(MY_WME));
+  if (socket_connect(fd, sargs, err) != 0) {
+    set_error(-1, err);
+  }
+}
+
+hstcpcli::~hstcpcli()
+{
+  delete_dynamic(&flds);
+}
+
+void
+hstcpcli::close()
+{
+  fd.close();
+  readbuf.clear();
+  writebuf.clear();
+  response_end_offset = 0;
+  cur_row_offset = 0;
+  num_flds = 0;
+  num_req_bufd = 0;
+  num_req_sent = 0;
+  num_req_rcvd = 0;
+}
+
+int
+hstcpcli::reconnect()
+{
+  clear_error();
+  close();
+  String err;
+  if (socket_connect(fd, sargs, err) != 0) {
+    set_error(-1, err);
+  }
+  return error_code;
+}
+
+int
+hstcpcli::set_timeout(int send_timeout, int recv_timeout)
+{
+  String err;
+  sargs.send_timeout = send_timeout;
+  sargs.recv_timeout = recv_timeout;
+  if (socket_set_timeout(fd, sargs, err) != 0) {
+    set_error(-1, err);
+  }
+  return error_code;
+}
+
+bool
+hstcpcli::stable_point()
+{
+  /* returns true if cli can send a new request */
+  return fd.get() >= 0 && num_req_bufd == 0 && num_req_sent == 0 &&
+    num_req_rcvd == 0 && response_end_offset == 0;
+}
+
+int
+hstcpcli::get_error_code()
+{
+  return error_code;
+}
+
+String&
+hstcpcli::get_error()
+{
+  return error_str;
+}
+
+int
+hstcpcli::read_more()
+{
+  const size_t block_size = 4096; // FIXME
+  char *const wp = readbuf.make_space(block_size);
+  int rlen;
+  errno = 0;
+  while ((rlen = read(fd.get(), wp, block_size)) <= 0) {
+    errno_buf = errno;
+    if (rlen < 0) {
+      if (errno == EINTR || errno == EAGAIN)
+      {
+        errno = 0;
+        continue;
+      }
+      error_str = String("read: failed", &my_charset_bin);
+    } else {
+      error_str = String("read: eof", &my_charset_bin);
+    }
+    return rlen;
+  }
+  readbuf.space_wrote(rlen);
+  return rlen;
+}
+
+void
+hstcpcli::clear_error()
+{
+  DBG(fprintf(stderr, "CLEAR_ERROR: %d\n", error_code));
+  error_code = 0;
+  error_str.length(0);
+}
+
+int
+hstcpcli::set_error(int code, const String& str)
+{
+  DBG(fprintf(stderr, "SET_ERROR: %d\n", code));
+  error_code = code;
+  error_str = str;
+  return error_code;
+}
+
+int
+hstcpcli::set_error(int code, const char *str)
+{
+  uint32 str_len = strlen(str);
+  DBG(fprintf(stderr, "SET_ERROR: %d\n", code));
+  error_code = code;
+  error_str.length(0);
+  if (error_str.reserve(str_len + 1))
+    return 0;
+  error_str.q_append(str, str_len);
+  error_str.c_ptr_safe();
+  return error_code;
+}
+
+void
+hstcpcli::request_buf_open_index(size_t pst_id, const char *dbn,
+  const char *tbl, const char *idx, const char *retflds, const char *filflds)
+{
+/*
+  if (num_req_sent > 0 || num_req_rcvd > 0) {
+*/
+  if (num_req_rcvd > 0) {
+    close();
+    set_error(-1, "request_buf_open_index: protocol out of sync");
+    return;
+  }
+  const string_ref dbn_ref(dbn, strlen(dbn));
+  const string_ref tbl_ref(tbl, strlen(tbl));
+  const string_ref idx_ref(idx, strlen(idx));
+  const string_ref rfs_ref(retflds, strlen(retflds));
+  writebuf.append_literal("P\t");
+  append_uint32(writebuf, pst_id); // FIXME size_t ?
+  writebuf.append_literal("\t");
+  writebuf.append(dbn_ref.begin(), dbn_ref.end());
+  writebuf.append_literal("\t");
+  writebuf.append(tbl_ref.begin(), tbl_ref.end());
+  writebuf.append_literal("\t");
+  writebuf.append(idx_ref.begin(), idx_ref.end());
+  writebuf.append_literal("\t");
+  writebuf.append(rfs_ref.begin(), rfs_ref.end());
+  if (filflds != 0) {
+    const string_ref fls_ref(filflds, strlen(filflds));
+    writebuf.append_literal("\t");
+    writebuf.append(fls_ref.begin(), fls_ref.end());
+  }
+  writebuf.append_literal("\n");
+  ++num_req_bufd;
+}
+
+void
+hstcpcli::request_buf_auth(const char *secret, const char *typ)
+{
+/*
+  if (num_req_sent > 0 || num_req_rcvd > 0) {
+*/
+  if (num_req_rcvd > 0) {
+    close();
+    set_error(-1, "request_buf_auth: protocol out of sync");
+    return;
+  }
+  if (typ == 0) {
+    typ = "1";
+  }
+  const string_ref typ_ref(typ, strlen(typ));
+  const string_ref secret_ref(secret, strlen(secret));
+  writebuf.append_literal("A\t");
+  writebuf.append(typ_ref.begin(), typ_ref.end());
+  writebuf.append_literal("\t");
+  writebuf.append(secret_ref.begin(), secret_ref.end());
+  writebuf.append_literal("\n");
+  ++num_req_bufd;
+}
+
+namespace {
+
+void
+append_delim_value(string_buffer& buf, const char *start, const char *finish)
+{
+  if (start == 0) {
+    /* null */
+    const char t[] = "\t\0";
+    buf.append(t, t + 2);
+  } else {
+    /* non-null */
+    buf.append_literal("\t");
+    escape_string(buf, start, finish);
+  }
+}
+
+};
+
+void
+hstcpcli::request_buf_exec_generic(size_t pst_id, const string_ref& op,
+  const string_ref *kvs, size_t kvslen, uint32 limit, uint32 skip,
+  const string_ref& mod_op, const string_ref *mvs, size_t mvslen,
+  const hstcpcli_filter *fils, size_t filslen, int invalues_keypart,
+  const string_ref *invalues, size_t invalueslen)
+{
+/*
+  if (num_req_sent > 0 || num_req_rcvd > 0) {
+*/
+  if (num_req_rcvd > 0) {
+    close();
+    set_error(-1, "request_buf_exec_generic: protocol out of sync");
+    return;
+  }
+  append_uint32(writebuf, pst_id); // FIXME size_t ?
+  writebuf.append_literal("\t");
+  writebuf.append(op.begin(), op.end());
+  writebuf.append_literal("\t");
+  append_uint32(writebuf, kvslen); // FIXME size_t ?
+  for (size_t i = 0; i < kvslen; ++i) {
+    const string_ref& kv = kvs[i];
+    append_delim_value(writebuf, kv.begin(), kv.end());
+  }
+  if (limit != 0 || skip != 0 || invalues_keypart >= 0 ||
+    mod_op.size() != 0 || filslen != 0) {
+    /* has more option */
+    writebuf.append_literal("\t");
+    append_uint32(writebuf, limit); // FIXME size_t ?
+    if (skip != 0 || invalues_keypart >= 0 ||
+      mod_op.size() != 0 || filslen != 0) {
+      writebuf.append_literal("\t");
+      append_uint32(writebuf, skip); // FIXME size_t ?
+    }
+    if (invalues_keypart >= 0) {
+      writebuf.append_literal("\t@\t");
+      append_uint32(writebuf, invalues_keypart);
+      writebuf.append_literal("\t");
+      append_uint32(writebuf, invalueslen);
+      for (size_t i = 0; i < invalueslen; ++i) {
+        const string_ref& s = invalues[i];
+        append_delim_value(writebuf, s.begin(), s.end());
+      }
+    }
+    for (size_t i = 0; i < filslen; ++i) {
+      const hstcpcli_filter& f = fils[i];
+      writebuf.append_literal("\t");
+      writebuf.append(f.filter_type.begin(), f.filter_type.end());
+      writebuf.append_literal("\t");
+      writebuf.append(f.op.begin(), f.op.end());
+      writebuf.append_literal("\t");
+      append_uint32(writebuf, f.ff_offset);
+      append_delim_value(writebuf, f.val.begin(), f.val.end());
+    }
+    if (mod_op.size() != 0) {
+      writebuf.append_literal("\t");
+      writebuf.append(mod_op.begin(), mod_op.end());
+      for (size_t i = 0; i < mvslen; ++i) {
+        const string_ref& mv = mvs[i];
+        append_delim_value(writebuf, mv.begin(), mv.end());
+      }
+    }
+  }
+  writebuf.append_literal("\n");
+  ++num_req_bufd;
+}
+
+size_t
+hstcpcli::request_buf_append(const char *start, const char *finish)
+{
+/*
+  if (num_req_sent > 0 || num_req_rcvd > 0) {
+*/
+  if (num_req_rcvd > 0) {
+    close();
+    set_error(-1, "request_buf_append: protocol out of sync");
+    return 0;
+  }
+  const char *nl = start;
+  size_t num_req = 0;
+  while ((nl = memchr_char(nl, '\n', finish - nl))) {
+    if (nl == finish)
+      break;
+    num_req++;
+    nl++;
+  }
+  num_req++;
+  writebuf.append(start, finish);
+  if (*(finish - 1) != '\n')
+    writebuf.append_literal("\n");
+  num_req_bufd += num_req;
+  return num_req;
+}
+
+void
+hstcpcli::request_reset()
+{
+  if (num_req_bufd) {
+    writebuf.erase_front(writebuf.size());
+    num_req_bufd = 0;
+  }
+}
+
+int
+hstcpcli::request_send()
+{
+  if (error_code < 0) {
+    return error_code;
+  }
+  clear_error();
+  if (fd.get() < 0) {
+    close();
+    return set_error(-1, "write: closed");
+  }
+/*
+  if (num_req_bufd == 0 || num_req_sent > 0 || num_req_rcvd > 0) {
+*/
+  if (num_req_bufd == 0 || num_req_rcvd > 0) {
+    close();
+    return set_error(-1, "request_send: protocol out of sync");
+  }
+  const size_t wrlen = writebuf.size();
+  const ssize_t r = send(fd.get(), writebuf.begin(), wrlen, MSG_NOSIGNAL);
+  if (r <= 0) {
+    close();
+    return set_error(-1, r < 0 ? "write: failed" : "write: eof");
+  }
+  writebuf.erase_front(r);
+  if (static_cast<size_t>(r) != wrlen) {
+    close();
+    return set_error(-1, "write: incomplete");
+  }
+  num_req_sent += num_req_bufd;
+  num_req_bufd = 0;
+  DBG(fprintf(stderr, "REQSEND 0\n"));
+  return 0;
+}
+
+int
+hstcpcli::response_recv(size_t& num_flds_r)
+{
+  if (error_code < 0) {
+    return error_code;
+  }
+  clear_error();
+  if (num_req_bufd > 0 || num_req_sent == 0 || num_req_rcvd > 0 ||
+    response_end_offset != 0) {
+    close();
+    return set_error(-1, "response_recv: protocol out of sync");
+  }
+  cur_row_offset = 0;
+  num_flds_r = num_flds = 0;
+  if (fd.get() < 0) {
+    return set_error(-1, "read: closed");
+  }
+  size_t offset = 0;
+  while (true) {
+    const char *const lbegin = readbuf.begin() + offset;
+    const char *const lend = readbuf.end();
+    if (lbegin < lend)
+    {
+      const char *const nl = memchr_char(lbegin, '\n', lend - lbegin);
+      if (nl != 0) {
+        offset += (nl + 1) - lbegin;
+        break;
+      }
+      offset += lend - lbegin;
+    }
+    if (read_more() <= 0) {
+      close();
+      error_code = -1;
+      return error_code;
+    }
+  }
+  response_end_offset = offset;
+  --num_req_sent;
+  ++num_req_rcvd;
+  char *start = readbuf.begin();
+  char *const finish = start + response_end_offset - 1;
+  const size_t resp_code = read_ui32(start, finish);
+  skip_one(start, finish);
+  num_flds_r = num_flds = read_ui32(start, finish);
+  if (resp_code != 0) {
+    skip_one(start, finish);
+    char *const err_begin = start;
+    read_token(start, finish);
+    char *const err_end = start;
+    String e = String(err_begin, (uint32)(err_end - err_begin), &my_charset_bin);
+    if (!e.length()) {
+      e = String("unknown_error", &my_charset_bin);
+    }
+    return set_error(resp_code, e);
+  }
+  cur_row_size = 0;
+  cur_row_offset = start - readbuf.begin();
+  DBG(fprintf(stderr, "[%s] ro=%zu eol=%zu\n",
+    String(readbuf.begin(), readbuf.begin() + response_end_offset)
+      .c_str(),
+    cur_row_offset, response_end_offset));
+  DBG(fprintf(stderr, "RES 0\n"));
+  if (flds.max_element < num_flds)
+  {
+    if (allocate_dynamic(&flds, num_flds))
+      return set_error(-1, "out of memory");
+  }
+  flds.elements = num_flds;
+  return 0;
+}
+
+int
+hstcpcli::get_result(hstresult& result)
+{
+/*
+  readbuf.swap(result.readbuf);
+*/
+  char *const wp = result.readbuf.make_space(response_end_offset);
+  memcpy(wp, readbuf.begin(), response_end_offset);
+  result.readbuf.space_wrote(response_end_offset);
+  result.response_end_offset = response_end_offset;
+  result.num_flds = num_flds;
+  result.cur_row_size = cur_row_size;
+  result.cur_row_offset = cur_row_offset;
+  if (result.flds.max_element < num_flds)
+  {
+    if (allocate_dynamic(&result.flds, num_flds))
+      return set_error(-1, "out of memory");
+  }
+  result.flds.elements = num_flds;
+  return 0;
+}
+
+const string_ref *
+hstcpcli::get_next_row()
+{
+  if (num_flds == 0 || flds.elements < num_flds) {
+    DBG(fprintf(stderr, "GNR NF 0\n"));
+    return 0;
+  }
+  char *start = readbuf.begin() + cur_row_offset;
+  char *const finish = readbuf.begin() + response_end_offset - 1;
+  if (start >= finish) { /* start[0] == nl */
+    DBG(fprintf(stderr, "GNR FIN 0 %p %p\n", start, finish));
+    return 0;
+  }
+  for (size_t i = 0; i < num_flds; ++i) {
+    skip_one(start, finish);
+    char *const fld_begin = start;
+    read_token(start, finish);
+    char *const fld_end = start;
+    char *wp = fld_begin;
+    if (is_null_expression(fld_begin, fld_end)) {
+      /* null */
+      ((string_ref *) flds.buffer)[i] = string_ref();
+    } else {
+      unescape_string(wp, fld_begin, fld_end); /* in-place */
+      ((string_ref *) flds.buffer)[i] = string_ref(fld_begin, wp);
+    }
+  }
+  cur_row_size = start - (readbuf.begin() + cur_row_offset);
+  cur_row_offset = start - readbuf.begin();
+  return (string_ref *) flds.buffer;
+}
+
+const string_ref *
+hstcpcli::get_next_row_from_result(hstresult& result)
+{
+  if (result.num_flds == 0 || result.flds.elements < result.num_flds) {
+    DBG(fprintf(stderr, "GNR NF 0\n"));
+    return 0;
+  }
+  char *start = result.readbuf.begin() + result.cur_row_offset;
+  char *const finish = result.readbuf.begin() + result.response_end_offset - 1;
+  if (start >= finish) { /* start[0] == nl */
+    DBG(fprintf(stderr, "GNR FIN 0 %p %p\n", start, finish));
+    return 0;
+  }
+  for (size_t i = 0; i < result.num_flds; ++i) {
+    skip_one(start, finish);
+    char *const fld_begin = start;
+    read_token(start, finish);
+    char *const fld_end = start;
+    char *wp = fld_begin;
+    if (is_null_expression(fld_begin, fld_end)) {
+      /* null */
+      ((string_ref *) result.flds.buffer)[i] = string_ref();
+    } else {
+      unescape_string(wp, fld_begin, fld_end); /* in-place */
+      ((string_ref *) result.flds.buffer)[i] = string_ref(fld_begin, wp);
+    }
+  }
+  result.cur_row_size =
+    start - (result.readbuf.begin() + result.cur_row_offset);
+  result.cur_row_offset = start - result.readbuf.begin();
+  return (string_ref *) result.flds.buffer;
+}
+
+size_t
+hstcpcli::get_row_size()
+{
+  return cur_row_size;
+}
+
+size_t
+hstcpcli::get_row_size_from_result(hstresult& result)
+{
+  return result.cur_row_size;
+}
+
+void
+hstcpcli::response_buf_remove()
+{
+  if (response_end_offset == 0) {
+    close();
+    set_error(-1, "response_buf_remove: protocol out of sync");
+    return;
+  }
+  readbuf.erase_front(response_end_offset);
+  response_end_offset = 0;
+  --num_req_rcvd;
+  cur_row_offset = 0;
+  num_flds = 0;
+}
+
+void
+hstcpcli::write_error_to_log(
+  const char *func_name,
+  const char *file_name,
+  ulong line_no
+) {
+  if (errno_buf) {
+    time_t cur_time = (time_t) time((time_t*) 0);
+    struct tm lt;
+    struct tm *l_time = localtime_r(&cur_time, &lt);
+    fprintf(stderr,
+      "%04d%02d%02d %02d:%02d:%02d [ERROR] hstcpcli: [%d][%s]"
+      " [%s][%s][%lu] errno=%d\n",
+      l_time->tm_year + 1900, l_time->tm_mon + 1, l_time->tm_mday,
+      l_time->tm_hour, l_time->tm_min, l_time->tm_sec,
+      error_code, error_str.c_ptr_safe(),
+      func_name, file_name, line_no, errno_buf);
+  }
+}
+
+hstcpcli_ptr
+hstcpcli_i::create(const socket_args& args)
+{
+  return hstcpcli_ptr(new hstcpcli(args));
+}
+
+};
+