All files / lib/internal/streams destroy.js

97.33% Statements 329/338
96.24% Branches 128/133
100% Functions 17/17
97.33% Lines 329/338

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 33921x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 205009x 205009x 4651x 4651x 4651x 4651x 1444x 1444x 4651x 2943x 2943x 4651x 205009x 21x 21x 21x 116237x 116237x 116237x 116237x 116237x 116237x 116237x 13724x 2x 2x 13724x 13724x 13724x 102513x 102513x 102513x 102513x 102513x 102513x 104033x 82176x 82176x 104046x 102202x 102202x 102513x 102513x 116237x 123x 123x 123x 116226x 102390x 102390x 102513x 102513x 116237x 21x 102513x 102513x 102513x 102513x 102496x     102496x 102496x 102496x 102496x 102496x 102496x 102496x 102496x 82174x 82174x 102496x 102187x 102187x 102496x 102496x 7x 7x 102496x 102496x 1684x 102396x 100812x 100812x 102496x 102513x 102513x 102513x     102513x 21x 1684x 1684x 1684x 1684x 21x 102417x 102417x 102417x 102417x 102417x 82095x 82095x 102417x 102111x 102111x 102417x 102417x 65709x 65709x 102417x 21x 1703x 1703x 1703x 1703x 1703x 3x 3x 1700x 1700x 1503x 1503x 1700x 1611x 1611x 1700x 1700x 1703x 21x 43861x 43861x 43861x 43861x 43861x 43859x 43859x 43859x 43859x 43859x 43859x 43859x 43859x 43859x 43859x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 43861x 21x 144x 144x 144x 144x 144x 144x 144x 144x 144x 144x 144x 22x 22x 122x 144x 144x 19x 19x 19x 19x 19x 11x 11x 19x 11x 11x 19x 7x 19x 12x 12x 19x 144x 21x 197064x 197064x 194713x 194713x 2351x 2351x 2351x 2351x 197044x 2271x 2271x 197064x 82x 82x 2351x 2351x 2351x 2982x 2x 2x 2x 2349x 2349x 197064x 21x 2348x 2348x 2348x 2348x 2347x 2x 2x 2x 2345x 2345x 2345x 2345x 2347x 2347x 2347x 2266x 2266x 2347x 80x 80x 2345x 2347x 123x 2346x 14x 2221x 2208x 2208x 2347x 2348x 2348x 2348x 2348x     2348x 21x 2208x 2208x 2208x 21x 330x 330x 330x 21x 1x 1x 1x 21x 1x 1x 1x 1x 21x 21x 601x 601x 434x 434x 167x 601x 106x 106x 167x 167x 486x 2x 2x 486x   165x 2x 165x 159x 163x 3x 3x 3x 1x 1x     167x 486x 11x 11x 601x 21x 21x 21x 21x 21x 21x 21x 21x  
'use strict';
 
const {
  aggregateTwoErrors,
  codes: {
    ERR_MULTIPLE_CALLBACK,
  },
  AbortError,
} = require('internal/errors');
const {
  Symbol,
} = primordials;
const {
  kDestroyed,
  isDestroyed,
  isFinished,
  isServerRequest
} = require('internal/streams/utils');
 
const kDestroy = Symbol('kDestroy');
const kConstruct = Symbol('kConstruct');
 
function checkError(err, w, r) {
  if (err) {
    // Avoid V8 leak, https://github.com/nodejs/node/pull/34103#issuecomment-652002364
    err.stack; // eslint-disable-line no-unused-expressions
 
    if (w && !w.errored) {
      w.errored = err;
    }
    if (r && !r.errored) {
      r.errored = err;
    }
  }
}
 
// Backwards compat. cb() is undocumented and unused in core but
// unfortunately might be used by modules.
function destroy(err, cb) {
  const r = this._readableState;
  const w = this._writableState;
  // With duplex streams we use the writable side for state.
  const s = w || r;
 
  if ((w && w.destroyed) || (r && r.destroyed)) {
    if (typeof cb === 'function') {
      cb();
    }
 
    return this;
  }
 
 
  // We set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks
  checkError(err, w, r);
 
  if (w) {
    w.destroyed = true;
  }
  if (r) {
    r.destroyed = true;
  }
 
  // If still constructing then defer calling _destroy.
  if (!s.constructed) {
    this.once(kDestroy, function(er) {
      _destroy(this, aggregateTwoErrors(er, err), cb);
    });
  } else {
    _destroy(this, err, cb);
  }
 
  return this;
}
 
function _destroy(self, err, cb) {
  let called = false;
 
  function onDestroy(err) {
    if (called) {
      return;
    }
    called = true;
 
    const r = self._readableState;
    const w = self._writableState;
 
    checkError(err, w, r);
 
    if (w) {
      w.closed = true;
    }
    if (r) {
      r.closed = true;
    }
 
    if (typeof cb === 'function') {
      cb(err);
    }
 
    if (err) {
      process.nextTick(emitErrorCloseNT, self, err);
    } else {
      process.nextTick(emitCloseNT, self);
    }
  }
  try {
    self._destroy(err || null, onDestroy);
  } catch (err) {
    onDestroy(err);
  }
}
 
function emitErrorCloseNT(self, err) {
  emitErrorNT(self, err);
  emitCloseNT(self);
}
 
function emitCloseNT(self) {
  const r = self._readableState;
  const w = self._writableState;
 
  if (w) {
    w.closeEmitted = true;
  }
  if (r) {
    r.closeEmitted = true;
  }
 
  if ((w && w.emitClose) || (r && r.emitClose)) {
    self.emit('close');
  }
}
 
function emitErrorNT(self, err) {
  const r = self._readableState;
  const w = self._writableState;
 
  if ((w && w.errorEmitted) || (r && r.errorEmitted)) {
    return;
  }
 
  if (w) {
    w.errorEmitted = true;
  }
  if (r) {
    r.errorEmitted = true;
  }
 
  self.emit('error', err);
}
 
function undestroy() {
  const r = this._readableState;
  const w = this._writableState;
 
  if (r) {
    r.constructed = true;
    r.closed = false;
    r.closeEmitted = false;
    r.destroyed = false;
    r.errored = null;
    r.errorEmitted = false;
    r.reading = false;
    r.ended = r.readable === false;
    r.endEmitted = r.readable === false;
  }
 
  if (w) {
    w.constructed = true;
    w.destroyed = false;
    w.closed = false;
    w.closeEmitted = false;
    w.errored = null;
    w.errorEmitted = false;
    w.finalCalled = false;
    w.prefinished = false;
    w.ended = w.writable === false;
    w.ending = w.writable === false;
    w.finished = w.writable === false;
  }
}
 
function errorOrDestroy(stream, err, sync) {
  // We have tests that rely on errors being emitted
  // in the same tick, so changing this is semver major.
  // For now when you opt-in to autoDestroy we allow
  // the error to be emitted nextTick. In a future
  // semver major update we should change the default to this.
 
  const r = stream._readableState;
  const w = stream._writableState;
 
  if ((w && w.destroyed) || (r && r.destroyed)) {
    return this;
  }
 
  if ((r && r.autoDestroy) || (w && w.autoDestroy))
    stream.destroy(err);
  else if (err) {
    // Avoid V8 leak, https://github.com/nodejs/node/pull/34103#issuecomment-652002364
    err.stack; // eslint-disable-line no-unused-expressions
 
    if (w && !w.errored) {
      w.errored = err;
    }
    if (r && !r.errored) {
      r.errored = err;
    }
    if (sync) {
      process.nextTick(emitErrorNT, stream, err);
    } else {
      emitErrorNT(stream, err);
    }
  }
}
 
function construct(stream, cb) {
  if (typeof stream._construct !== 'function') {
    return;
  }
 
  const r = stream._readableState;
  const w = stream._writableState;
 
  if (r) {
    r.constructed = false;
  }
  if (w) {
    w.constructed = false;
  }
 
  stream.once(kConstruct, cb);
 
  if (stream.listenerCount(kConstruct) > 1) {
    // Duplex
    return;
  }
 
  process.nextTick(constructNT, stream);
}
 
function constructNT(stream) {
  let called = false;
 
  function onConstruct(err) {
    if (called) {
      errorOrDestroy(stream, err ?? new ERR_MULTIPLE_CALLBACK());
      return;
    }
    called = true;
 
    const r = stream._readableState;
    const w = stream._writableState;
    const s = w || r;
 
    if (r) {
      r.constructed = true;
    }
    if (w) {
      w.constructed = true;
    }
 
    if (s.destroyed) {
      stream.emit(kDestroy, err);
    } else if (err) {
      errorOrDestroy(stream, err, true);
    } else {
      process.nextTick(emitConstructNT, stream);
    }
  }
 
  try {
    stream._construct(onConstruct);
  } catch (err) {
    onConstruct(err);
  }
}
 
function emitConstructNT(stream) {
  stream.emit(kConstruct);
}
 
function isRequest(stream) {
  return stream && stream.setHeader && typeof stream.abort === 'function';
}
 
function emitCloseLegacy(stream) {
  stream.emit('close');
}
 
function emitErrorCloseLegacy(stream, err) {
  stream.emit('error', err);
  process.nextTick(emitCloseLegacy, stream);
}
 
// Normalize destroy for legacy.
function destroyer(stream, err) {
  if (!stream || isDestroyed(stream)) {
    return;
  }
 
  if (!err && !isFinished(stream)) {
    err = new AbortError();
  }
 
  // TODO: Remove isRequest branches.
  if (isServerRequest(stream)) {
    stream.socket = null;
    stream.destroy(err);
  } else if (isRequest(stream)) {
    stream.abort();
  } else if (isRequest(stream.req)) {
    stream.req.abort();
  } else if (typeof stream.destroy === 'function') {
    stream.destroy(err);
  } else if (typeof stream.close === 'function') {
    // TODO: Don't lose err?
    stream.close();
  } else if (err) {
    process.nextTick(emitErrorCloseLegacy, stream);
  } else {
    process.nextTick(emitCloseLegacy, stream);
  }
 
  if (!stream.destroyed) {
    stream[kDestroyed] = true;
  }
}
 
module.exports = {
  construct,
  destroyer,
  destroy,
  undestroy,
  errorOrDestroy
};