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import {decode as decodeCompact} from '../../../json-crdt-patch/codec/compact/decode'; import {decode as decodeJson} from '../../../json-crdt-patch/codec/verbose/decode'; import {Decoder as BinaryDecoder} from '../../codec/structural/binary/Decoder'; import {Decoder as CompactDecoder} from '../../codec/structural/compact/Decoder'; import {Decoder as JsonDecoder} from '../../codec/structural/verbose/Decoder'; import {DelOp, InsObjOp, InsStrOp, InsBinOp, InsArrOp} from '../../../json-crdt-patch/operations'; import {encode as encodeCompact} from '../../../json-crdt-patch/codec/compact/encode'; import {encode as encodeJson} from '../../../json-crdt-patch/codec/verbose/encode'; import {Encoder as BinaryEncoder} from '../../codec/structural/binary/Encoder'; import {Encoder as CompactEncoder} from '../../codec/structural/compact/Encoder'; import {Encoder as JsonEncoder} from '../../codec/structural/verbose/Encoder'; import {Encoder as IndexedBinaryEncoder} from '../../codec/indexed/binary/Encoder'; import {Decoder as IndexedBinaryDecoder} from '../../codec/indexed/binary/Decoder'; import {generateInteger} from './util'; import type {Model} from '../..'; import type {Patch} from '../../../json-crdt-patch/Patch'; import {PatchBuilder} from '../../../json-crdt-patch/PatchBuilder'; import {RandomJson} from '@jsonjoy.com/util/lib/json-random/RandomJson'; import {randomU32} from 'hyperdyperid/lib/randomU32'; import {StrNode, ValNode, ObjNode, ArrNode, BinNode} from '../../nodes'; import {interval} from '../../../json-crdt-patch/clock'; import type {JsonCrdtFuzzer} from './JsonCrdtFuzzer'; import {Fuzzer} from '@jsonjoy.com/util/lib/Fuzzer'; const jsonEncoder = new JsonEncoder(); const jsonDecoder = new JsonDecoder(); const compactEncoder = new CompactEncoder(); const compactDecoder = new CompactDecoder(); const binaryEncoder = new BinaryEncoder(); const binaryDecoder = new BinaryDecoder(); const indexedBinaryEncoder = new IndexedBinaryEncoder(); const indexedBinaryDecoder = new IndexedBinaryDecoder(); export class SessionLogical { public models: Model[] = []; public patches: Patch[][] = []; public modelStart: unknown; public modelsStart: unknown[] = []; public modelsEnd: unknown[] = []; public patchesSerialized: unknown[][] = []; public readonly debug = false; public constructor( public fuzzer: JsonCrdtFuzzer, public concurrency: number, ) { Iif (this.debug) this.modelStart = jsonEncoder.encode(fuzzer.model); for (let i = 0; i < concurrency; i++) { const model = fuzzer.model.fork(); this.models.push(model); Iif (this.debug) this.modelsStart.push(jsonEncoder.encode(model)); this.patches.push([]); this.patchesSerialized.push([]); } } public generateEdits() { for (let i = 0; i < this.concurrency; i++) { this.generatePeerEdits(i); } } private generatePeerEdits(peer: number) { const patchCount = generateInteger(...this.fuzzer.opts.patchesPerPeer); for (let patchIndex = 0; patchIndex < patchCount; patchIndex++) { this.generatePatchForPeer(peer); } } private generatePatchForPeer(peer: number) { const model = this.models[peer]; const node = this.fuzzer.picker.pickNode(model); let patch: Patch | null = null; if (node instanceof StrNode) patch = this.generateStringPatch(model, node); else if (node instanceof BinNode) patch = this.generateBinaryPatch(model, node); else if (node instanceof ObjNode) patch = this.generateObjectPatch(model, node); else if (node instanceof ArrNode) patch = this.generateArrayPatch(model, node); else if (node instanceof ValNode) patch = this.generateValuePatch(model, node); else return; Iif (!patch) return; model.applyPatch(patch); if (this.fuzzer.opts.testCodecs) { if (patch.span()) { if (randomU32(0, 1)) patch = decodeJson(encodeJson(patch)); if (randomU32(0, 1)) patch = decodeCompact(encodeCompact(patch)); if (randomU32(0, 1)) patch = decodeBinary(encodeBinary(patch)); } } this.patches[peer].push(patch); Iif (this.debug) this.patchesSerialized[peer].push(encodeJson(patch)); } private generateStringPatch(model: Model, node: StrNode): Patch | null { const opcode = this.fuzzer.picker.pickStringOperation(node); const builder = new PatchBuilder(model.clock); const size = node.length(); if (opcode === InsStrOp) { const substring = this.fuzzer.picker.generateSubstring(); const pos = !size ? 0 : Math.min(size - 1, Math.floor(Math.random() * (size + 1))); const posId = !size ? node.id : node.find(pos)!; builder.insStr(node.id, posId, substring); } else if (opcode === DelOp) { Iif (!size) return null; const pos = randomU32(0, size - 1); const length = randomU32(1, size - pos); const spans = node.findInterval(pos, length); builder.del(node.id, spans); } return builder.patch; } private generateBinaryPatch(model: Model, node: BinNode): Patch | null { const opcode = this.fuzzer.picker.pickBinaryOperation(node); const builder = new PatchBuilder(model.clock); const size = node.length(); if (opcode === InsBinOp) { const substring = this.fuzzer.picker.generateBinaryData(); const pos = !size ? 0 : Math.min(size - 1, Math.floor(Math.random() * (size + 1))); const posId = !size ? node.id : node.find(pos)!; builder.insBin(node.id, posId, substring); } else if (opcode === DelOp) { Iif (!size) return null; const pos = randomU32(0, size - 1); const length = randomU32(1, size - pos); const spans = node.findInterval(pos, length); builder.del(node.id, spans); } return builder.patch; } private generateObjectPatch(model: Model, node: ObjNode): Patch { const [key, opcode] = this.fuzzer.picker.pickObjectOperation(node); const builder = new PatchBuilder(model.clock); if (opcode === InsObjOp) { const json = RandomJson.generate({ nodeCount: 3, odds: { null: 1, boolean: 2, number: 10, string: 8, binary: 4, array: 2, object: 2, }, }); // console.log('ADDING KEY', key, json); const valueId = builder.json(json); builder.insObj(node.id, [[key, valueId]]); } else { // console.log('DELETING KEY', JSON.stringify(key)) builder.insObj(node.id, [[key, builder.const(undefined)]]); } return builder.patch; } private generateArrayPatch(model: Model, node: ArrNode): Patch { const opcode = this.fuzzer.picker.pickArrayOperation(node); const builder = new PatchBuilder(model.clock); const length = node.length(); if (opcode === InsArrOp) { const json = RandomJson.generate({nodeCount: Math.ceil(Math.random() * 5)}); const valueId = builder.json(json); if (!length) builder.insArr(node.id, node.id, [valueId]); else { const pos = Math.ceil(Math.random() * length); Iif (!pos) builder.insArr(node.id, node.id, [valueId]); else { const afterId = node.find(pos - 1)!; builder.insArr(node.id, afterId, [valueId]); } } } else { Iif (!length) return builder.patch; const pos = Math.floor(Math.random() * length); const valueId = node.find(pos)!; builder.del(node.id, [interval(valueId, 0, 1)]); } return builder.patch; } private generateValuePatch(model: Model, node: ValNode): Patch { const builder = new PatchBuilder(model.clock); const value = Math.random() > 0.1 ? Fuzzer.pick([0, 1, -1, 5, -5, 1111, -2222, 4444444444, -888888888888, RandomJson.genNumber()]) : RandomJson.generate(); builder.setVal(node.id, builder.constOrJson(value)); return builder.patch; } public synchronize() { for (let i = 0; i < this.concurrency; i++) { let model = this.models[i]; if (this.fuzzer.opts.testCodecs) { if (randomU32(0, 1)) model = jsonDecoder.decode(jsonEncoder.encode(model)); if (randomU32(0, 1)) model = compactDecoder.decode(compactEncoder.encode(model)); if (randomU32(0, 1)) model = binaryDecoder.decode(binaryEncoder.encode(model)); if (randomU32(0, 1)) model = indexedBinaryDecoder.decode(indexedBinaryEncoder.encode(model)); } for (let j = 0; j < this.concurrency; j++) { const patches = this.patches[j]; for (const patch of patches) { model.applyPatch(patch); } } this.models[i] = model; } for (let j = 0; j < this.concurrency; j++) { const patches = this.patches[j]; for (const patch of patches) { this.fuzzer.model.applyPatch(patch); } } Iif (this.debug) for (const model of this.models) this.modelsEnd.push(jsonEncoder.encode(model)); } } |