bpm-engine
Version:
Business Process Management Engine for JavaScript
239 lines (188 loc) • 23.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
var _stringify = require('babel-runtime/core-js/json/stringify');
var _stringify2 = _interopRequireDefault(_stringify);
var _create = require('babel-runtime/core-js/object/create');
var _create2 = _interopRequireDefault(_create);
var _assign = require('babel-runtime/core-js/object/assign');
var _assign2 = _interopRequireDefault(_assign);
var _keys = require('babel-runtime/core-js/object/keys');
var _keys2 = _interopRequireDefault(_keys);
var _debug = require('../debug');
var _debug2 = _interopRequireDefault(_debug);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const log = (0, _debug2.default)('persist');
const findByProcessId = processId => el => el.processId === processId;
/**
* findByQuery
* @param {*} query
* @returns tokenInstance or null
*/
const findByQuery = query => el => {
let found = true;
(0, _keys2.default)(query).forEach(key => {
if (el[key] !== query[key]) {
found = false;
}
});
return found;
};
const remapPull = (json, tokenInstance) => {
const pull = json.$pull;
let index;
if (pull) {
delete json.$pull;
const key = (0, _keys2.default)(pull)[0];
if (tokenInstance[key]) {
index = tokenInstance[key].indexOf(pull[key]);
}
if (index !== -1) {
tokenInstance[key].splice(index, 1);
}
}
};
const remapSet = json => {
const set = json.$set;
if (set) {
delete json.$set;
}
(0, _assign2.default)(json, set);
};
const createEmptyStore = () => (0, _create2.default)({
processInstances: [],
tokenInstances: [],
workflowDefinitions: [],
timers: [],
tasks: []
});
class MemoryPersist {
constructor({ store = createEmptyStore() } = {}) {
this.processInstance = {
create: json => {
log('create process');
this.store.processInstances.push(json);
return JSON.parse((0, _stringify2.default)(json));
},
find: query => {
log('find process', query);
const processInstance = this.store.processInstances.find(findByProcessId(query.processId));
return JSON.parse((0, _stringify2.default)(processInstance));
},
update: (query, obj) => {
log('update process', query, obj);
const json = JSON.parse((0, _stringify2.default)(obj));
const processInstance = this.store.processInstances.find(findByProcessId(query.processId));
remapSet(json);
(0, _assign2.default)(processInstance, json);
return JSON.parse((0, _stringify2.default)(processInstance));
}
};
this.tokenInstance = {
create: obj => {
log('create token', obj);
this.store.tokenInstances.push(obj);
return JSON.parse((0, _stringify2.default)(obj));
},
find: query => {
log('find token', query);
const tokenInstance = this.store.tokenInstances.find(findByQuery(query));
return tokenInstance && JSON.parse((0, _stringify2.default)(tokenInstance));
},
update: (query, obj) => {
log('update token', query, obj);
const json = JSON.parse((0, _stringify2.default)(obj));
const tokenInstance = this.store.tokenInstances.find(findByQuery(query));
if (!tokenInstance) {
throw new Error(`tokenInstance not found ${query.tokenId}`);
}
remapSet(json);
remapPull(json, tokenInstance);
(0, _assign2.default)(tokenInstance, json);
return JSON.parse((0, _stringify2.default)(tokenInstance));
}
};
this.workflowDefinition = {
create: obj => {
log('create workflowDefinition (deploy)', obj);
this.store.workflowDefinitions.push(obj);
return JSON.parse((0, _stringify2.default)(obj));
},
find: query => {
log('find workflowDefinition', query);
const workflowDefinition = this.store.workflowDefinitions.find(findByQuery(query));
return workflowDefinition && JSON.parse((0, _stringify2.default)(workflowDefinition));
},
update: (query, obj) => {
log('update workflowDefinition', query, obj);
const json = JSON.parse((0, _stringify2.default)(obj));
const workflowDefinition = this.store.timers.find(findByQuery(query));
if (workflowDefinition) {
remapSet(json);
remapPull(json, workflowDefinition);
(0, _assign2.default)(workflowDefinition, json);
return JSON.parse((0, _stringify2.default)(workflowDefinition));
}
}
};
this.timer = {
create: obj => {
log('create timer', obj);
this.store.timers.push(obj);
return JSON.parse((0, _stringify2.default)(obj));
},
find: query => {
log('find timer', query);
const timer = this.store.timers.find(findByQuery(query));
return timer && JSON.parse((0, _stringify2.default)(timer));
},
getNext: time => {
log('find next timer');
const timers = this.store.timers.filter(a => a.status !== 'done').map(a => (0, _assign2.default)(a, { timeLeft: a.time - time })).filter(a => a.timeLeft <= 0).sort((a, b) => a.timeLeft < b.timeLeft);
return timers[0] && JSON.parse((0, _stringify2.default)(timers[0]));
},
update: (query, obj) => {
log('update timer', query, obj);
const json = JSON.parse((0, _stringify2.default)(obj));
const timer = this.store.timers.find(findByQuery(query));
if (timer) {
remapSet(json);
remapPull(json, timer);
(0, _assign2.default)(timer, json);
return JSON.parse((0, _stringify2.default)(timer));
}
}
};
this.task = {
create: obj => {
log('create task', obj);
this.store.tasks.push(obj);
return JSON.parse((0, _stringify2.default)(obj));
},
find: query => {
log('find tasks', query);
return this.store.tasks.find(findByQuery(query));
}
};
this.store = store;
log('creating persistence instance');
if (!this.store.processInstances) {
throw new Error('A store provided to the persisting-layer needs to have a processInstances key-value which will contain a collection of token instances');
}
if (!this.store.tokenInstances) {
throw new Error('A store provided to the persisting-layer needs to have a tokenInstances key-value which will contain a collection of token instances');
}
if (!this.store.workflowDefinitions) {
throw new Error('A store provided to the persisting-layer needs to have a workflowDefinitions key-value which will contain a collection of workflow definitions');
}
if (!this.store.timers) {
throw new Error('A store provided to the persisting-layer needs to have a timers key-value which will contain a collection of timers');
}
if (!this.store.tasks) {
throw new Error('A store provided to the persisting-layer needs to have a tasks key-value which will contain a collection of tasks');
}
}
}
exports.default = MemoryPersist;
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debug from 'lib/debug';\n\nconst log = debug('persist');\n\nconst findByProcessId = processId => el => el.processId === processId;\n\n/**\n * findByQuery\n * @param {*} query\n * @returns tokenInstance or null\n */\nconst findByQuery = query => (el) => {\n  let found = true;\n\n  Object.keys(query).forEach((key) => {\n    if (el[key] !== query[key]) {\n      found = false;\n    }\n  });\n\n  return found;\n};\n\nconst remapPull = (json, tokenInstance) => {\n  const pull = json.$pull;\n  let index;\n  if (pull) {\n    delete json.$pull;\n    const key = Object.keys(pull)[0];\n    if (tokenInstance[key]) {\n      index = tokenInstance[key].indexOf(pull[key]);\n    }\n    if (index !== -1) {\n      tokenInstance[key].splice(index, 1);\n    }\n  }\n};\n\nconst remapSet = (json) => {\n  const set = json.$set;\n  if (set) {\n    delete json.$set;\n  }\n  Object.assign(json, set);\n};\n\nconst createEmptyStore = () =>\n  Object.create({\n    processInstances: [],\n    tokenInstances: [],\n    workflowDefinitions: [],\n    timers: [],\n    tasks: [],\n  });\n\nexport default class MemoryPersist {\n  constructor({ store = createEmptyStore() } = {}) {\n    this.store = store;\n\n    log('creating persistence instance');\n\n    if (!this.store.processInstances) {\n      throw new Error('A store provided to the persisting-layer needs to have a processInstances key-value which will contain a collection of token instances');\n    }\n    if (!this.store.tokenInstances) {\n      throw new Error('A store provided to the persisting-layer needs to have a tokenInstances key-value which will contain a collection of token instances');\n    }\n    if (!this.store.workflowDefinitions) {\n      throw new Error('A store provided to the persisting-layer needs to have a workflowDefinitions key-value which will contain a collection of workflow definitions');\n    }\n    if (!this.store.timers) {\n      throw new Error('A store provided to the persisting-layer needs to have a timers key-value which will contain a collection of timers');\n    }\n    if (!this.store.tasks) {\n      throw new Error('A store provided to the persisting-layer needs to have a tasks key-value which will contain a collection of tasks');\n    }\n  }\n\n  processInstance = {\n    create: (json) => {\n      log('create process');\n      this.store.processInstances.push(json);\n      return JSON.parse(JSON.stringify(json));\n    },\n\n    find: (query) => {\n      log('find process', query);\n      const processInstance = this.store.processInstances.find(findByProcessId(query.processId));\n      return JSON.parse(JSON.stringify(processInstance));\n    },\n\n    update: (query, obj) => {\n      log('update process', query, obj);\n      const json = JSON.parse(JSON.stringify(obj));\n\n      const processInstance = this.store.processInstances.find(findByProcessId(query.processId));\n      remapSet(json);\n      Object.assign(processInstance, json);\n\n      return JSON.parse(JSON.stringify(processInstance));\n    },\n  };\n\n  tokenInstance = {\n    create: (obj) => {\n      log('create token', obj);\n      this.store.tokenInstances.push(obj);\n      return JSON.parse(JSON.stringify(obj));\n    },\n\n    find: (query) => {\n      log('find token', query);\n      const tokenInstance = this.store.tokenInstances.find(findByQuery(query));\n      return tokenInstance && JSON.parse(JSON.stringify(tokenInstance));\n    },\n\n    update: (query, obj) => {\n      log('update token', query, obj);\n      const json = JSON.parse(JSON.stringify(obj));\n\n      const tokenInstance = this.store.tokenInstances.find(findByQuery(query));\n\n      if (!tokenInstance) {\n        throw new Error(`tokenInstance not found ${query.tokenId}`);\n      }\n\n      remapSet(json);\n      remapPull(json, tokenInstance);\n\n      Object.assign(tokenInstance, json);\n\n      return JSON.parse(JSON.stringify(tokenInstance));\n    },\n  };\n\n  workflowDefinition = {\n    create: (obj) => {\n      log('create workflowDefinition (deploy)', obj);\n      this.store.workflowDefinitions.push(obj);\n      return JSON.parse(JSON.stringify(obj));\n    },\n\n    find: (query) => {\n      log('find workflowDefinition', query);\n      const workflowDefinition = this.store.workflowDefinitions.find(findByQuery(query));\n      return workflowDefinition && JSON.parse(JSON.stringify(workflowDefinition));\n    },\n\n    update: (query, obj) => {\n      log('update workflowDefinition', query, obj);\n      const json = JSON.parse(JSON.stringify(obj));\n\n      const workflowDefinition = this.store.timers.find(findByQuery(query));\n\n      if (workflowDefinition) {\n        remapSet(json);\n        remapPull(json, workflowDefinition);\n\n        Object.assign(workflowDefinition, json);\n\n        return JSON.parse(JSON.stringify(workflowDefinition));\n      }\n    },\n  };\n\n  timer = {\n    create: (obj) => {\n      log('create timer', obj);\n      this.store.timers.push(obj);\n      return JSON.parse(JSON.stringify(obj));\n    },\n\n    find: (query) => {\n      log('find timer', query);\n      const timer = this.store.timers.find(findByQuery(query));\n      return timer && JSON.parse(JSON.stringify(timer));\n    },\n\n    getNext: (time) => {\n      log('find next timer');\n      const timers = this.store.timers\n        .filter(a => a.status !== 'done')\n        .map(a => Object.assign(a, { timeLeft: a.time - time }))\n        .filter(a => a.timeLeft <= 0)\n        .sort((a, b) => a.timeLeft < b.timeLeft);\n\n      return timers[0] && JSON.parse(JSON.stringify(timers[0]));\n    },\n\n    update: (query, obj) => {\n      log('update timer', query, obj);\n      const json = JSON.parse(JSON.stringify(obj));\n\n      const timer = this.store.timers.find(findByQuery(query));\n\n      if (timer) {\n        remapSet(json);\n        remapPull(json, timer);\n\n        Object.assign(timer, json);\n\n        return JSON.parse(JSON.stringify(timer));\n      }\n    },\n  };\n\n  task = {\n    create: (obj) => {\n      log('create task', obj);\n      this.store.tasks.push(obj);\n      return JSON.parse(JSON.stringify(obj));\n    },\n\n    find: (query) => {\n      log('find tasks', query);\n      return this.store.tasks.find(findByQuery(query));\n    },\n  };\n}\n"]}