safe-run/dist/main.js

Run unsafe JavaScript using WebWorkers

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/***/ "./src/main.js":
/*!*********************!*\
  !*** ./src/main.js ***!
  \*********************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
eval("__webpack_require__.r(__webpack_exports__);\n/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, \"default\", function() { return Commander; });\n/* harmony import */ var _soldier__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./soldier */ \"./src/soldier.js\");\n\nclass Commander {\n  constructor(timeOut = 200) {\n    this.timeOut = timeOut;\n    this.soldiers = [];\n    this.soldierStatuses = [];\n    this.tasks = [];\n    this.taskIdCount = 0;\n    this.resolves = {};\n    this.rejects = {};\n\n    for (var count = 0; count < navigator.hardwareConcurrency; count++) {\n      this.spawnSoldier(count);\n    }\n  }\n\n  run(dependencies, body, params, args) {\n    let taskId = this.taskIdCount++;\n    this.tasks.push({\n      id: taskId,\n      dependencies: dependencies,\n      body: body,\n      params: params,\n      args: args\n    });\n    let that = this;\n    let promise = new Promise(function (resolve, reject) {\n      that.resolves[`T${taskId}`] = resolve;\n      that.rejects[`T${taskId}`] = reject;\n    });\n    this.delegateNextTask();\n    return promise;\n  }\n\n  delegateNextTask() {\n    if (this.soldierStatuses.indexOf(\"ready\") > -1 && this.tasks.length > 0) {\n      let soldierNum = this.soldierStatuses.indexOf(\"ready\");\n      let soldier = this.soldiers[soldierNum];\n      let task = this.tasks[0];\n      let taskId = task.id;\n      this.tasks.shift();\n      this.soldierStatuses[soldierNum] = \"running\"; //Start timer to kill and respawn soldier if task takes too long\n\n      var that = this;\n      setTimeout(function () {\n        that.abortTask(soldierNum, taskId);\n      }, this.timeOut);\n      soldier.postMessage({\n        type: \"run\",\n        soldierNum: soldierNum,\n        taskId: taskId,\n        dependencies: task.dependencies,\n        remoteFunction: task.body,\n        params: task.params,\n        args: task.args\n      });\n    }\n  }\n\n  abortTask(soldierNum, taskId) {\n    if (this.soldierStatuses[soldierNum] == \"running\") {\n      this.killSoldier(soldierNum);\n      this.rejects[`T${taskId}`](new Error(`Task aborted after ${this.timeOut}ms.`));\n      this.spawnSoldier(soldierNum);\n      this.delegateNextTask();\n    }\n  }\n\n  killSoldier(soldierNum) {\n    let soldier = this.soldiers[soldierNum];\n    soldier.terminate();\n  }\n\n  spawnSoldier(soldierNum) {\n    this.soldiers[soldierNum] = new Worker(URL.createObjectURL(new Blob([`(${_soldier__WEBPACK_IMPORTED_MODULE_0__[\"default\"]})()`])), {\n      type: 'module'\n    });\n    this.soldierStatuses[soldierNum] = \"ready\";\n\n    this.soldiers[soldierNum].onmessage = message => {\n      if (message.data.success) {\n        this.resolves[`T${message.data.taskId}`](message.data.value);\n        this.soldierStatuses[message.data.soldierNum] = \"ready\";\n\n        if (this.tasks.length > 0) {\n          run(this.tasks[0]);\n        }\n      } else if (!message.data.success) {\n        this.rejects[`T${message.data.taskId}`](message.data.value);\n        this.soldierStatuses[message.data.soldierNum] = \"ready\";\n\n        if (this.tasks.length > 0) {\n          run(this.tasks[0]);\n        }\n      } else {\n        console.log(`Message from soldier: ${message.data.value}`);\n      }\n    };\n  }\n\n}\n\n//# sourceURL=webpack://safe-run/./src/main.js?");

/***/ }),

/***/ "./src/soldier.js":
/*!************************!*\
  !*** ./src/soldier.js ***!
  \************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
eval("__webpack_require__.r(__webpack_exports__);\nvar Soldier = () => {\n  var importedScripts = [];\n  var soldierNum = null;\n\n  onmessage = function (message) {\n    if (typeof importScripts === \"function\") {\n      if (message.data.type == \"initialize\") {\n        soldierNum = message.data.soldierNum;\n      } else if (message.data.type == \"run\") {\n        try {\n          if (Array.isArray(message.data.dependencies)) {\n            message.data.dependencies.forEach(dep => {\n              if (importedScripts.indexOf(dep) == -1) {\n                importScripts(dep);\n                importedScripts.push(dep);\n              }\n            });\n          }\n\n          var remoteFunction = new Function(...(Array.isArray(message.data.params) ? message.data.params : []), message.data.remoteFunction);\n          result = remoteFunction(...(Array.isArray(message.data.args) ? message.data.args : []));\n          postMessage({\n            soldierNum: message.data.soldierNum,\n            success: true,\n            taskId: message.data.taskId,\n            value: result\n          });\n        } catch (err) {\n          postMessage({\n            soldierNum: message.data.soldierNum,\n            success: false,\n            taskId: message.data.taskId,\n            value: err.message\n          });\n        }\n      }\n    }\n  };\n};\n\n/* harmony default export */ __webpack_exports__[\"default\"] = (Soldier);\n\n//# sourceURL=webpack://safe-run/./src/soldier.js?");

/***/ })

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