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
const Model = require('objection').Model
const path = require('path')
const fs = require('fs-extra')
const _ = require('lodash')
const yaml = require('js-yaml')
const DepGraph = require('dependency-graph').DepGraph
const commonHelper = require('../helpers/common')
/* global WIKI */
/**
* Renderer model
*/
module.exports = class Renderer extends Model {
static get tableName() { return 'renderers' }
static get idColumn() { return 'key' }
static get jsonSchema () {
return {
type: 'object',
required: ['key', 'isEnabled'],
properties: {
key: {type: 'string'},
isEnabled: {type: 'boolean'},
config: {type: 'object'}
}
}
}
static async getRenderers() {
return WIKI.models.renderers.query()
}
static async refreshRenderersFromDisk() {
let trx
try {
const dbRenderers = await WIKI.models.renderers.query()
// -> Fetch definitions from disk
const rendererDirs = await fs.readdir(path.join(WIKI.SERVERPATH, 'modules/rendering'))
let diskRenderers = []
for (let dir of rendererDirs) {
const def = await fs.readFile(path.join(WIKI.SERVERPATH, 'modules/rendering', dir, 'definition.yml'), 'utf8')
diskRenderers.push(yaml.safeLoad(def))
}
WIKI.data.renderers = diskRenderers.map(renderer => ({
...renderer,
props: commonHelper.parseModuleProps(renderer.props)
}))
// -> Insert new Renderers
let newRenderers = []
for (let renderer of WIKI.data.renderers) {
if (!_.some(dbRenderers, ['key', renderer.key])) {
newRenderers.push({
key: renderer.key,
isEnabled: _.get(renderer, 'enabledDefault', true),
config: _.transform(renderer.props, (result, value, key) => {
_.set(result, key, value.default)
return result
}, {})
})
} else {
const rendererConfig = _.get(_.find(dbRenderers, ['key', renderer.key]), 'config', {})
await WIKI.models.renderers.query().patch({
config: _.transform(renderer.props, (result, value, key) => {
if (!_.has(result, key)) {
_.set(result, key, value.default)
}
return result
}, rendererConfig)
}).where('key', renderer.key)
}
}
if (newRenderers.length > 0) {
trx = await WIKI.models.Objection.transaction.start(WIKI.models.knex)
for (let renderer of newRenderers) {
await WIKI.models.renderers.query(trx).insert(renderer)
}
await trx.commit()
WIKI.logger.info(`Loaded ${newRenderers.length} new renderers: [ OK ]`)
} else {
WIKI.logger.info(`No new renderers found: [ SKIPPED ]`)
}
} catch (err) {
WIKI.logger.error(`Failed to scan or load new renderers: [ FAILED ]`)
WIKI.logger.error(err)
if (trx) {
trx.rollback()
}
}
}
static async getRenderingPipeline(contentType) {
const renderersDb = await WIKI.models.renderers.query().where('isEnabled', true)
if (renderersDb && renderersDb.length > 0) {
const renderers = renderersDb.map(rdr => {
const renderer = _.find(WIKI.data.renderers, ['key', rdr.key])
return {
...renderer,
config: rdr.config
}
})
// Build tree
const rawCores = _.filter(renderers, renderer => !_.has(renderer, 'dependsOn')).map(core => {
core.children = _.filter(renderers, ['dependsOn', core.key])
return core
})
// Build dependency graph
const graph = new DepGraph({ circular: true })
rawCores.map(core => { graph.addNode(core.key) })
rawCores.map(core => {
rawCores.map(coreTarget => {
if (core.key !== coreTarget.key) {
if (core.output === coreTarget.input) {
graph.addDependency(core.key, coreTarget.key)
}
}
})
})
// Filter unused cores
let activeCoreKeys = _.filter(rawCores, ['input', contentType]).map(core => core.key)
_.clone(activeCoreKeys).map(coreKey => {
activeCoreKeys = _.union(activeCoreKeys, graph.dependenciesOf(coreKey))
})
const activeCores = _.filter(rawCores, core => _.includes(activeCoreKeys, core.key))
// Rebuild dependency graph with active cores
const graphActive = new DepGraph({ circular: true })
activeCores.map(core => { graphActive.addNode(core.key) })
activeCores.map(core => {
activeCores.map(coreTarget => {
if (core.key !== coreTarget.key) {
if (core.output === coreTarget.input) {
graphActive.addDependency(core.key, coreTarget.key)
}
}
})
})
// Reorder cores in reverse dependency order
let orderedCores = []
_.reverse(graphActive.overallOrder()).map(coreKey => {
orderedCores.push(_.find(rawCores, ['key', coreKey]))
})
return orderedCores
} else {
WIKI.logger.error(`Rendering pipeline is empty!`)
return false
}
}
}