1 | 'use strict';
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2 |
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3 | const Assert = require('assert');
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4 | const ForceArray = require('force-array');
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5 | const { graphql } = require('graphi');
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6 | const Hasha = require('hasha');
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7 |
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8 |
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9 | exports.toNameValues = (obj) => {
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10 | if (!obj) {
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11 | return [];
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12 | }
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13 |
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14 | return Object.keys(obj).map((name) => {
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15 | const value = obj[name];
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16 | return {
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17 | id: Hasha(JSON.stringify({ name, value })),
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18 | name,
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19 | value
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20 | };
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21 | });
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22 | };
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23 |
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24 | exports.fromNameValues = (nameValues, prefix = '') => {
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25 | return ForceArray(nameValues).reduce((accumulator, { name, value }) => {
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26 | return Object.assign(accumulator, {
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27 | [prefix + name]: name === 'triton.cns.disable' ? JSON.parse(value) : value
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28 | });
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29 | }, {});
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30 | };
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31 |
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32 | exports.toPage = ({ res = {}, payload, offset, limit }) => {
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33 | const headers = res.headers || {};
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34 | return {
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35 | offset: offset || 0,
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36 | limit: limit || 0,
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37 | total: parseInt(headers['x-resource-count'], 10) || 0,
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38 | results: payload
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39 | };
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40 | };
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41 |
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42 |
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43 |
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44 | exports.makeExecutableSchema = ({ typeDefs, resolvers = {} }) => {
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45 | const parsed = graphql.parse(typeDefs);
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46 | const astSchema = graphql.buildASTSchema(parsed, { commentDescriptions: true });
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47 |
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48 | for (const resolverName of Object.keys(resolvers)) {
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49 | const type = astSchema.getType(resolverName);
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50 | Assert(type || resolverName === '__schema', `Missing schema definition for resolver: ${resolverName}`);
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51 |
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52 | const typeResolver = resolvers[resolverName];
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53 |
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54 |
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55 | for (const fieldName of Object.keys(typeResolver)) {
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56 | const fieldResolver = typeResolver[fieldName];
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57 | Assert(typeof fieldResolver === 'function', `${resolverName}.${fieldName} resolver must be a function`);
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58 |
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59 | if (type instanceof graphql.GraphQLScalarType) {
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60 | type[fieldName] = fieldResolver;
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61 | continue;
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62 | }
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63 |
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64 | if (type instanceof graphql.GraphQLEnumType) {
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65 | const fieldType = type.getValue(fieldName);
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66 | Assert(fieldType, `${resolverName}.${fieldName} enum definition missing from schema`);
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67 | fieldType.value = fieldResolver;
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68 | continue;
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69 | }
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70 |
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71 |
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72 | if (!(type instanceof graphql.GraphQLObjectType) && !(type instanceof graphql.GraphQLInterfaceType)) {
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73 | continue;
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74 | }
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75 |
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76 | const fields = type.getFields();
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77 | if (!fields) {
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78 | continue;
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79 | }
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80 |
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81 | fields[fieldName].resolve = fieldResolver;
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82 | }
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83 | }
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84 | return astSchema;
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85 | };
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