src/services/common-service/common-service.ts

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 import * as _ from "lodash";
   6 import { AxiosInstance, AxiosPromise } from "axios";
   7 import * as uuid from "uuid/v4";
   8 import { ApiActions } from "~/services/api/api-actions";
   9 import * as QueryString from "query-string";
  10
  11 interface Errors {
  12     status: number;
  13     errors: string[];
  14     errorToken: string;
  15 }
  16
  17 export interface ListArguments {
  18     limit?: number;
  19     offset?: number;
  20     filters?: string;
  21     order?: string;
  22     select?: string[];
  23     distinct?: boolean;
  24     count?: string;
  25     includeOldVersions?: boolean;
  26 }
  27
  28 export interface ListResults<T> {
  29     clusterId?: string;
  30     kind: string;
  31     offset: number;
  32     limit: number;
  33     items: T[];
  34     itemsAvailable: number;
  35 }
  36
  37 export class CommonService<T> {
  38     protected serverApi: AxiosInstance;
  39     protected resourceType: string;
  40     protected actions: ApiActions;
  41     protected readOnlyFields: string[];
  42
  43     constructor(serverApi: AxiosInstance, resourceType: string, actions: ApiActions, readOnlyFields: string[] = []) {
  44         this.serverApi = serverApi;
  45         this.resourceType = '/' + resourceType;
  46         this.actions = actions;
  47         this.readOnlyFields = readOnlyFields;
  48     }
  49
  50     static mapResponseKeys = (response: { data: any }) =>
  51         CommonService.mapKeys(_.camelCase)(response.data)
  52
  53     static mapKeys = (mapFn: (key: string) => string) =>
  54         (value: any): any => {
  55             switch (true) {
  56                 case _.isPlainObject(value):
  57                     return Object
  58                         .keys(value)
  59                         .map(key => [key, mapFn(key)])
  60                         .reduce((newValue, [key, newKey]) => ({
  61                             ...newValue,
  62                             [newKey]: (key === 'items') ? CommonService.mapKeys(mapFn)(value[key]) : value[key]
  63                         }), {});
  64                 case _.isArray(value):
  65                     return value.map(CommonService.mapKeys(mapFn));
  66                 default:
  67                     return value;
  68             }
  69         }
  70
  71     private validateUuid(uuid: string) {
  72         if (uuid === "") {
  73             throw new Error('UUID cannot be empty string');
  74         }
  75     }
  76
  77     static defaultResponse<R>(promise: AxiosPromise<R>, actions: ApiActions, mapKeys = true, showErrors = true): Promise<R> {
  78         const reqId = uuid();
  79         actions.progressFn(reqId, true);
  80         return promise
  81             .then(data => {
  82                 actions.progressFn(reqId, false);
  83                 return data;
  84             })
  85             .then((response: { data: any }) => {
  86                 return mapKeys ? CommonService.mapResponseKeys(response) : response.data;
  87             })
  88             .catch(({ response }) => {
  89                 actions.progressFn(reqId, false);
  90                 const errors = CommonService.mapResponseKeys(response) as Errors;
  91                 errors.status = response.status;
  92                 actions.errorFn(reqId, errors, showErrors);
  93                 throw errors;
  94             });
  95     }
  96
  97     create(data?: Partial<T>) {
  98         return CommonService.defaultResponse(
  99             this.serverApi
 100                 .post<T>(this.resourceType, data && CommonService.mapKeys(_.snakeCase)(data)),
 101             this.actions
 102         );
 103     }
 104
 105     delete(uuid: string): Promise<T> {
 106         this.validateUuid(uuid);
 107         return CommonService.defaultResponse(
 108             this.serverApi
 109                 .delete(this.resourceType + '/' + uuid),
 110             this.actions
 111         );
 112     }
 113
 114     get(uuid: string, showErrors?: boolean) {
 115         this.validateUuid(uuid);
 116         return CommonService.defaultResponse(
 117             this.serverApi
 118                 .get<T>(this.resourceType + '/' + uuid),
 119             this.actions,
 120             true, // mapKeys
 121             showErrors
 122         );
 123     }
 124
 125     list(args: ListArguments = {}): Promise<ListResults<T>> {
 126         const { filters, order, ...other } = args;
 127         const params = {
 128             ...CommonService.mapKeys(_.snakeCase)(other),
 129             filters: filters ? `[${filters}]` : undefined,
 130             order: order ? order : undefined
 131         };
 132
 133         if (QueryString.stringify(params).length <= 1500) {
 134             return CommonService.defaultResponse(
 135                 this.serverApi.get(this.resourceType, { params }),
 136                 this.actions
 137             );
 138         } else {
 139             // Using the POST special case to avoid URI length 414 errors.
 140             const formData = new FormData();
 141             formData.append("_method", "GET");
 142             Object.keys(params).map(key => {
 143                 if (params[key] !== undefined) {
 144                     formData.append(key, params[key]);
 145                 }
 146             });
 147             return CommonService.defaultResponse(
 148                 this.serverApi.post(this.resourceType, formData, {
 149                     params: {
 150                         _method: 'GET'
 151                     }
 152                 }),
 153                 this.actions
 154             );
 155         }
 156     }
 157
 158     update(uuid: string, data: Partial<T>) {
 159         this.validateUuid(uuid);
 160         return CommonService.defaultResponse(
 161             this.serverApi
 162                 .put<T>(this.resourceType + '/' + uuid, data && CommonService.mapKeys(_.snakeCase)(data)),
 163             this.actions
 164         );
 165     }
 166 }