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SockoProcessor.ts
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SockoProcessor.ts
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import { ProcessorInterface } from './ProcessorInterface'
import { SockoNodeInterface } from '../nodes/SockoNodeInterface'
import { OverrideNodeProcessor } from './OverrideNodeProcessor'
import { BucketNodeProcessor } from './BucketNodeProcessor'
import { SocketNodeProcessor } from './SocketNodeProcessor'
import { RootNodeBuilder } from '../builders/RootNodeBuilder'
import { InvalidMergeNode } from '../errors/InvalidMergeNode'
import { SockoNodeType } from '../nodes/SockoNodeType'
import { BranchNodeBuilder } from '../builders/BranchNodeBuilder'
import { getLogger, Logger } from 'loglevel'
import { ProcessorOptionsInterface } from '../options/ProcessorOptionsInterface'
import Bluebird = require('bluebird')
/**
* The main SOCKO! processor.
*
* This will call all other processors and _merge their results together to form one resulting tree.
*/
export class SockoProcessor implements ProcessorInterface {
private _log: Logger
private _options: ProcessorOptionsInterface
constructor () {
this._log = getLogger('socko-api:SockoProcessor')
}
public process (inputNode: SockoNodeInterface,
hierarchyNode: SockoNodeInterface,
options: ProcessorOptionsInterface): Bluebird<SockoNodeInterface> {
this._options = options
this._log.debug('Walking through available processors')
return Bluebird.all(
[
new OverrideNodeProcessor().process(inputNode, hierarchyNode, options),
new BucketNodeProcessor().process(inputNode, hierarchyNode, options),
new SocketNodeProcessor().process(inputNode, hierarchyNode, options)
]
)
.then(
processedNodes => {
this._log.debug('Merging results')
return Bluebird.reduce<SockoNodeInterface, SockoNodeInterface>(
processedNodes,
(original, merger) => {
return this._merge(original, merger)
.then(
value => {
return Bluebird.resolve(value)
}
)
},
new RootNodeBuilder().build()
)
}
)
}
/**
* Merge one node (the merger) over the other node (the origin). Nodes with the same name will be overwritten, if
* the node from the merger node is not an implementation of [[SkippedNodeInterface]].
*
* The merged result is returned
*
* @param {SockoNodeInterface} origin the origin node
* @param {SockoNodeInterface} merger the node, that is merger over the origin node
* @return {Bluebird<SockoNodeInterface>} the result of the _merge operation
*/
private _merge (origin: SockoNodeInterface, merger: SockoNodeInterface): Bluebird<SockoNodeInterface> {
this._log.debug('Sanity checking merging nodes')
if (origin.name !== merger.name) {
this._log.debug('We somehow try to _merge two incoherent nodes.')
return Bluebird.reject(new InvalidMergeNode(origin, merger))
}
if (origin.type !== SockoNodeType.Skipped && merger.type !== SockoNodeType.Skipped && origin.type !== merger.type) {
this._log.debug('Merger and origin had different types.')
return Bluebird.reject(new InvalidMergeNode(origin, merger))
}
this._log.debug(`Processing ${origin.name}`)
let processed
if (origin.type === SockoNodeType.Root || merger.type === SockoNodeType.Root) {
processed = new RootNodeBuilder().build()
} else {
processed = new BranchNodeBuilder().withName(origin.name).build()
}
let tasks: Array<Bluebird<SockoNodeInterface>> = []
for (let originNode of origin.getChildren() as Array<SockoNodeInterface>) {
if (originNode.type !== SockoNodeType.Skipped) {
if (originNode.type === SockoNodeType.Output) {
this._log.debug(`Adding node ${originNode.name}`)
tasks.push(Bluebird.resolve(originNode))
} else {
let mergerChild = merger.getChildByName(originNode.name) as SockoNodeInterface
if (mergerChild && mergerChild.type !== SockoNodeType.Skipped) {
tasks.push(this._merge(originNode, mergerChild))
} else {
this._log.debug(`Adding node ${originNode.name}`)
tasks.push(Bluebird.resolve(originNode))
}
}
}
}
for (let mergerNode of merger.getChildren() as Array<SockoNodeInterface>) {
if (mergerNode.type !== SockoNodeType.Skipped) {
let originChild = origin.getChildByName(mergerNode.name) as SockoNodeInterface
if (!originChild || originChild.type === SockoNodeType.Skipped) {
this._log.debug(`Adding node ${mergerNode.name}`)
tasks.push(Bluebird.resolve(mergerNode))
}
}
}
return Bluebird.all(tasks)
.then(
processedChildren => {
this._log.debug('Running ResultTreeNodeProcessor from options')
return Bluebird.reduce<SockoNodeInterface, Array<SockoNodeInterface>>(
processedChildren,
(total, current) => {
return this._options.processResultTreeNode(current)
.then(
processedNode => {
if (processedNode.type !== SockoNodeType.Skipped) {
total.push(processedNode)
}
return Bluebird.resolve(total)
}
)
},
[]
)
}
)
.then(
processedChildren => {
this._log.debug('Adding procesed children')
for (let child of processedChildren) {
if (child.type !== SockoNodeType.Skipped) {
processed.addChild(child)
}
}
return Bluebird.resolve(processed)
}
)
}
}