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1"use strict";
2Object.defineProperty(exports, "__esModule", { value: true });
3const tslib_1 = require("tslib");
4const client_common_1 = require("@neo-one/client-common");
5const node_core_1 = require("@neo-one/node-core");
6const bn_js_1 = require("bn.js");
7const lodash_1 = tslib_1.__importDefault(require("lodash"));
8const ValidatorCache_1 = require("./ValidatorCache");
9const processOutput = async (blockchain, cache, output, negative) => {
10 let { value } = output;
11 if (negative) {
12 value = value.neg();
13 }
14 const [account] = await Promise.all([
15 cache.getAccount(output.address),
16 cache.updateAccountBalance(output.address, output.asset, value),
17 ]);
18 if (client_common_1.common.uInt256Equal(output.asset, blockchain.settings.governingToken.hash) && account.votes.length > 0) {
19 await Promise.all([
20 Promise.all(account.votes.map(async (publicKey) => cache.updateValidatorVotes(publicKey, value))),
21 cache.updateValidatorsCountVotes(account.votes.length - 1, value),
22 ]);
23 }
24};
25const processTransaction = async (blockchain, cache, transaction) => {
26 let allOutputs = await Promise.all(transaction.inputs.map(async (input) => {
27 const output = await blockchain.output.get(input);
28 return { output, negative: true };
29 }));
30 allOutputs = allOutputs.concat(transaction.outputs.map((output) => ({ output, negative: false })));
31 await Promise.all(allOutputs.map(async ({ output, negative }) => processOutput(blockchain, cache, output, negative)));
32 const accountHashes = [...new Set(allOutputs.map(({ output }) => client_common_1.common.uInt160ToHex(output.address)))].map((hash) => client_common_1.common.hexToUInt160(hash));
33 const touchedValidators = await Promise.all(accountHashes.map(async (hash) => {
34 const account = await cache.getAccount(hash);
35 return account.votes;
36 }));
37 const touchedValidatorsSet = [
38 ...new Set(touchedValidators.reduce((acc, votes) => acc.concat(votes.map((vote) => client_common_1.common.ecPointToHex(vote))), [])),
39 ].map((publicKey) => client_common_1.common.hexToECPoint(publicKey));
40 await Promise.all(touchedValidatorsSet.map(async (publicKey) => {
41 const validator = await cache.getValidator(publicKey);
42 if (!validator.registered && validator.votes.eq(node_core_1.utils.ZERO)) {
43 await cache.deleteValidator(publicKey);
44 }
45 }));
46};
47exports.getDescriptorChanges = async ({ transactions, getAccount, governingTokenHash, }) => {
48 const accountChanges = {};
49 const validatorVotesChanges = {};
50 const validatorRegisteredChanges = {};
51 const validatorsCountChanges = [];
52 const allDescriptors = transactions.reduce((acc, transaction) => acc.concat(transaction.descriptors), []);
53 const accountDescriptors = allDescriptors.filter((descriptor) => descriptor.type === 0x40);
54 const groupedAccountDescriptors = Object.entries(lodash_1.default.groupBy(accountDescriptors, (descriptor) => client_common_1.common.uInt160ToHex(client_common_1.common.bufferToUInt160(descriptor.key))));
55 await Promise.all(groupedAccountDescriptors.map(async ([hash, descriptors]) => {
56 const account = await getAccount(client_common_1.common.hexToUInt160(hash));
57 const balance = account.getBalance(governingTokenHash);
58 for (const vote of account.votes) {
59 const voteHex = client_common_1.common.ecPointToHex(vote);
60 validatorVotesChanges[voteHex] = (validatorVotesChanges[voteHex] === undefined
61 ? node_core_1.utils.ZERO
62 : validatorVotesChanges[voteHex]).sub(balance);
63 }
64 const descriptor = descriptors[descriptors.length - 1];
65 const reader = new node_core_1.BinaryReader(descriptor.value);
66 const votes = reader.readArray(() => reader.readECPoint());
67 if (votes.length !== account.votes.length) {
68 if (account.votes.length > 0) {
69 validatorsCountChanges[account.votes.length - 1] = (validatorsCountChanges[account.votes.length - 1] === undefined
70 ? node_core_1.utils.ZERO
71 : validatorsCountChanges[account.votes.length - 1]).sub(balance);
72 }
73 if (votes.length > 0) {
74 validatorsCountChanges[votes.length - 1] = (validatorsCountChanges[votes.length - 1] ===
75 undefined
76 ? node_core_1.utils.ZERO
77 : validatorsCountChanges[votes.length - 1]).add(balance);
78 }
79 }
80 accountChanges[hash] = votes;
81 for (const vote of votes) {
82 const voteHex = client_common_1.common.ecPointToHex(vote);
83 validatorVotesChanges[voteHex] = (validatorVotesChanges[voteHex] === undefined
84 ? node_core_1.utils.ZERO
85 : validatorVotesChanges[voteHex]).add(balance);
86 }
87 }));
88 const validatorDescriptors = allDescriptors.filter((descriptor) => descriptor.type === 0x48);
89 for (const descriptor of validatorDescriptors) {
90 const publicKey = client_common_1.common.bufferToECPoint(descriptor.key);
91 validatorRegisteredChanges[client_common_1.common.ecPointToHex(publicKey)] = descriptor.value.some((byte) => byte !== 0);
92 }
93 const validatorChanges = {};
94 for (const [publicKey, votes] of Object.entries(validatorVotesChanges)) {
95 validatorChanges[publicKey] = { votes };
96 }
97 for (const [publicKey, registered] of Object.entries(validatorRegisteredChanges)) {
98 const current = validatorChanges[publicKey] === undefined ? {} : validatorChanges[publicKey];
99 validatorChanges[publicKey] = {
100 registered,
101 votes: current.votes,
102 };
103 }
104 return {
105 accountChanges,
106 validatorChanges,
107 validatorsCountChanges,
108 };
109};
110exports.processStateTransaction = async ({ validatorChanges, validatorsCountChanges, tryGetValidatorsCount, addValidatorsCount, updateValidatorsCount, tryGetValidator, addValidator, deleteValidator, updateValidator, }) => {
111 const validatorsCount = await tryGetValidatorsCount();
112 const mutableValidatorsCountVotes = validatorsCount === undefined ? [] : [...validatorsCount.votes];
113 [...validatorsCountChanges.entries()].forEach(([index, value]) => {
114 mutableValidatorsCountVotes[index] = value;
115 });
116 await Promise.all([
117 Promise.all(Object.entries(validatorChanges).map(async ([publicKeyHex, { registered, votes }]) => {
118 const publicKey = client_common_1.common.hexToECPoint(publicKeyHex);
119 const validator = await tryGetValidator({ publicKey });
120 if (validator === undefined) {
121 await addValidator(new node_core_1.Validator({
122 publicKey,
123 registered,
124 votes,
125 }));
126 }
127 else if (((registered !== undefined && !registered) || (registered === undefined && !validator.registered)) &&
128 ((votes !== undefined && votes.eq(node_core_1.utils.ZERO)) || (votes === undefined && validator.votes.eq(node_core_1.utils.ZERO)))) {
129 await deleteValidator({ publicKey: validator.publicKey });
130 }
131 else {
132 await updateValidator(validator, { votes, registered });
133 }
134 })),
135 validatorsCount === undefined
136 ? addValidatorsCount(new node_core_1.ValidatorsCount({
137 votes: mutableValidatorsCountVotes,
138 }))
139 : updateValidatorsCount(validatorsCount, {
140 votes: mutableValidatorsCountVotes,
141 }),
142 ]);
143};
144exports.getValidators = async (blockchain, transactions) => {
145 const cache = new ValidatorCache_1.ValidatorCache(blockchain);
146 await Promise.all(transactions.map(async (transaction) => processTransaction(blockchain, cache, transaction)));
147 const { validatorChanges, validatorsCountChanges } = await exports.getDescriptorChanges({
148 transactions: transactions.filter((transaction) => transaction.type === node_core_1.TransactionType.State && transaction instanceof node_core_1.StateTransaction),
149 getAccount: async (hash) => cache.getAccount(hash),
150 governingTokenHash: blockchain.settings.governingToken.hashHex,
151 });
152 await exports.processStateTransaction({
153 validatorChanges,
154 validatorsCountChanges,
155 tryGetValidatorsCount: async () => cache.getValidatorsCount(),
156 addValidatorsCount: async (value) => cache.addValidatorsCount(value),
157 updateValidatorsCount: async (update) => {
158 await cache.updateValidatorsCount(update);
159 },
160 tryGetValidator: async (key) => cache.getValidator(key.publicKey),
161 addValidator: async (validator) => cache.addValidator(validator),
162 deleteValidator: async (key) => cache.deleteValidator(key.publicKey),
163 updateValidator: async (value, update) => cache.updateValidator(value.publicKey, update),
164 });
165 const [validatorsCount, validators] = await Promise.all([cache.getValidatorsCount(), cache.getAllValidators()]);
166 const numValidators = Math.max(node_core_1.utils.weightedAverage(node_core_1.utils
167 .weightedFilter(validatorsCount.votes
168 .map((votes, count) => ({ count, votes: votes === undefined ? node_core_1.utils.ZERO : votes }))
169 .filter(({ votes }) => votes.gt(node_core_1.utils.ZERO)), 0.25, 0.75, ({ count }) => new bn_js_1.BN(count))
170 .map(([{ count }, weight]) => ({ value: count, weight }))), blockchain.settings.standbyValidators.length);
171 const standbyValidatorsSet = new Set(blockchain.settings.standbyValidators.map((publicKey) => client_common_1.common.ecPointToHex(publicKey)));
172 const validatorsPublicKeySet = new Set(lodash_1.default.take(validators
173 .filter((validator) => (validator.registered && validator.votes.gt(node_core_1.utils.ZERO)) ||
174 standbyValidatorsSet.has(client_common_1.common.ecPointToHex(validator.publicKey)))
175 .sort((aValidator, bValidator) => aValidator.votes.eq(bValidator.votes)
176 ? client_common_1.common.ecPointCompare(aValidator.publicKey, bValidator.publicKey)
177 : -aValidator.votes.cmp(bValidator.votes))
178 .map((validator) => client_common_1.common.ecPointToHex(validator.publicKey)), numValidators));
179 const standbyValidatorsArray = [...standbyValidatorsSet];
180 for (let i = 0; i < standbyValidatorsArray.length && validatorsPublicKeySet.size < numValidators; i += 1) {
181 validatorsPublicKeySet.add(standbyValidatorsArray[i]);
182 }
183 const validatorsPublicKeys = [...validatorsPublicKeySet].map((hex) => client_common_1.common.hexToECPoint(hex));
184 return validatorsPublicKeys.sort((aKey, bKey) => client_common_1.common.ecPointCompare(aKey, bKey));
185};
186
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tslint:disable no-object-mutation no-array-mutation no-loop-statement\nimport { common, ECPoint, UInt160, UInt256Hex } from '@neo-one/client-common';\nimport {\n  Account,\n  BinaryReader,\n  Output,\n  StateDescriptor,\n  StateTransaction,\n  Transaction,\n  TransactionType,\n  utils,\n  Validator,\n  ValidatorKey,\n  ValidatorsCount,\n  ValidatorsCountUpdate,\n  ValidatorUpdate,\n} from '@neo-one/node-core';\nimport { BN } from 'bn.js';\nimport _ from 'lodash';\nimport { Blockchain } from './Blockchain';\nimport { ValidatorCache } from './ValidatorCache';\n\nconst processOutput = async (\n  blockchain: Blockchain,\n  cache: ValidatorCache,\n  output: Output,\n  negative: boolean,\n): Promise<void> => {\n  let { value } = output;\n  if (negative) {\n    value = value.neg();\n  }\n  const [account] = await Promise.all([\n    cache.getAccount(output.address),\n    cache.updateAccountBalance(output.address, output.asset, value),\n  ]);\n\n  if (common.uInt256Equal(output.asset, blockchain.settings.governingToken.hash) && account.votes.length > 0) {\n    await Promise.all([\n      Promise.all(account.votes.map(async (publicKey) => cache.updateValidatorVotes(publicKey, value))),\n\n      cache.updateValidatorsCountVotes(account.votes.length - 1, value),\n    ]);\n  }\n};\n\nconst processTransaction = async (\n  blockchain: Blockchain,\n  cache: ValidatorCache,\n  transaction: Transaction,\n): Promise<void> => {\n  let allOutputs = await Promise.all(\n    transaction.inputs.map(async (input) => {\n      const output = await blockchain.output.get(input);\n\n      return { output, negative: true };\n    }),\n  );\n\n  allOutputs = allOutputs.concat(transaction.outputs.map((output) => ({ output, negative: false })));\n\n  await Promise.all(allOutputs.map(async ({ output, negative }) => processOutput(blockchain, cache, output, negative)));\n\n  const accountHashes = [...new Set(allOutputs.map(({ output }) => common.uInt160ToHex(output.address)))].map((hash) =>\n    common.hexToUInt160(hash),\n  );\n  const touchedValidators = await Promise.all(\n    accountHashes.map(async (hash) => {\n      const account = await cache.getAccount(hash);\n\n      return account.votes;\n    }),\n  );\n\n  const touchedValidatorsSet = [\n    ...new Set(\n      touchedValidators.reduce<readonly string[]>(\n        (acc, votes) => acc.concat(votes.map((vote) => common.ecPointToHex(vote))),\n        [],\n      ),\n    ),\n  ].map((publicKey) => common.hexToECPoint(publicKey));\n  await Promise.all(\n    touchedValidatorsSet.map(async (publicKey) => {\n      const validator = await cache.getValidator(publicKey);\n      if (!validator.registered && validator.votes.eq(utils.ZERO)) {\n        await cache.deleteValidator(publicKey);\n      }\n    }),\n  );\n};\n\n// tslint:disable readonly-keyword readonly-array\nexport interface AccountChanges {\n  [hash: string]: readonly ECPoint[];\n}\nexport interface ValidatorVotesChanges {\n  [hash: string]: BN;\n}\nexport interface ValidatorRegisteredChanges {\n  [hash: string]: boolean;\n}\ninterface ValidatorChange {\n  readonly registered?: boolean;\n  readonly votes?: BN;\n}\nexport interface ValidatorChanges {\n  [hash: string]: ValidatorChange;\n}\nexport type ValidatorsCountChanges = BN[];\n// tslint:enable readonly-keyword readonly-array\n\nexport const getDescriptorChanges = async ({\n  transactions,\n  getAccount,\n  governingTokenHash,\n}: {\n  readonly transactions: readonly StateTransaction[];\n  readonly getAccount: (hash: UInt160) => Promise<Account>;\n  readonly governingTokenHash: UInt256Hex;\n}): Promise<{\n  readonly accountChanges: AccountChanges;\n  readonly validatorChanges: ValidatorChanges;\n  readonly validatorsCountChanges: ValidatorsCountChanges;\n}> => {\n  const accountChanges: AccountChanges = {};\n  const validatorVotesChanges: ValidatorVotesChanges = {};\n  const validatorRegisteredChanges: ValidatorRegisteredChanges = {};\n  const validatorsCountChanges: ValidatorsCountChanges = [];\n  const allDescriptors = transactions.reduce<readonly StateDescriptor[]>(\n    (acc, transaction) => acc.concat(transaction.descriptors),\n    [],\n  );\n\n  const accountDescriptors = allDescriptors.filter((descriptor) => descriptor.type === 0x40);\n\n  const groupedAccountDescriptors = Object.entries(\n    _.groupBy(accountDescriptors, (descriptor) => common.uInt160ToHex(common.bufferToUInt160(descriptor.key))),\n  );\n\n  await Promise.all(\n    groupedAccountDescriptors.map(async ([hash, descriptors]) => {\n      const account = await getAccount(common.hexToUInt160(hash));\n      const balance = account.getBalance(governingTokenHash);\n\n      // tslint:disable-next-line no-loop-statement\n      for (const vote of account.votes) {\n        const voteHex = common.ecPointToHex(vote);\n        validatorVotesChanges[voteHex] = ((validatorVotesChanges[voteHex] as BN | undefined) === undefined\n          ? utils.ZERO\n          : validatorVotesChanges[voteHex]\n        ).sub(balance);\n      }\n\n      const descriptor = descriptors[descriptors.length - 1];\n      const reader = new BinaryReader(descriptor.value);\n      const votes = reader.readArray(() => reader.readECPoint());\n      if (votes.length !== account.votes.length) {\n        if (account.votes.length > 0) {\n          validatorsCountChanges[account.votes.length - 1] = ((validatorsCountChanges[account.votes.length - 1] as\n            | BN\n            | undefined) === undefined\n            ? utils.ZERO\n            : validatorsCountChanges[account.votes.length - 1]\n          ).sub(balance);\n        }\n\n        if (votes.length > 0) {\n          validatorsCountChanges[votes.length - 1] = ((validatorsCountChanges[votes.length - 1] as BN | undefined) ===\n          undefined\n            ? utils.ZERO\n            : validatorsCountChanges[votes.length - 1]\n          ).add(balance);\n        }\n      }\n\n      accountChanges[hash] = votes;\n      for (const vote of votes) {\n        const voteHex = common.ecPointToHex(vote);\n        validatorVotesChanges[voteHex] = ((validatorVotesChanges[voteHex] as BN | undefined) === undefined\n          ? utils.ZERO\n          : validatorVotesChanges[voteHex]\n        ).add(balance);\n      }\n    }),\n  );\n\n  const validatorDescriptors = allDescriptors.filter((descriptor) => descriptor.type === 0x48);\n\n  for (const descriptor of validatorDescriptors) {\n    const publicKey = common.bufferToECPoint(descriptor.key);\n    validatorRegisteredChanges[common.ecPointToHex(publicKey)] = descriptor.value.some((byte) => byte !== 0);\n  }\n\n  const validatorChanges: ValidatorChanges = {};\n  for (const [publicKey, votes] of Object.entries(validatorVotesChanges)) {\n    validatorChanges[publicKey] = { votes };\n  }\n\n  for (const [publicKey, registered] of Object.entries(validatorRegisteredChanges)) {\n    const current =\n      (validatorChanges[publicKey] as ValidatorChange | undefined) === undefined ? {} : validatorChanges[publicKey];\n    validatorChanges[publicKey] = {\n      registered,\n      votes: current.votes,\n    };\n  }\n\n  return {\n    accountChanges,\n    validatorChanges,\n    validatorsCountChanges,\n  };\n};\n\nexport const processStateTransaction = async ({\n  validatorChanges,\n  validatorsCountChanges,\n  tryGetValidatorsCount,\n  addValidatorsCount,\n  updateValidatorsCount,\n  tryGetValidator,\n  addValidator,\n  deleteValidator,\n  updateValidator,\n}: {\n  readonly validatorChanges: ValidatorChanges;\n  readonly validatorsCountChanges: ValidatorsCountChanges;\n  readonly tryGetValidatorsCount: () => Promise<ValidatorsCount | undefined>;\n  readonly addValidatorsCount: (validatorsCount: ValidatorsCount) => Promise<void>;\n  readonly updateValidatorsCount: (validatorsCount: ValidatorsCount, update: ValidatorsCountUpdate) => Promise<void>;\n\n  readonly tryGetValidator: (key: ValidatorKey) => Promise<Validator | undefined>;\n  readonly addValidator: (validator: Validator) => Promise<void>;\n  readonly deleteValidator: (key: ValidatorKey) => Promise<void>;\n  readonly updateValidator: (validator: Validator, update: ValidatorUpdate) => Promise<Validator>;\n}): Promise<void> => {\n  const validatorsCount = await tryGetValidatorsCount();\n  const mutableValidatorsCountVotes = validatorsCount === undefined ? [] : [...validatorsCount.votes];\n  [...validatorsCountChanges.entries()].forEach(([index, value]) => {\n    mutableValidatorsCountVotes[index] = value;\n  });\n\n  await Promise.all([\n    Promise.all(\n      Object.entries(validatorChanges).map(async ([publicKeyHex, { registered, votes }]) => {\n        const publicKey = common.hexToECPoint(publicKeyHex);\n        const validator = await tryGetValidator({ publicKey });\n        if (validator === undefined) {\n          await addValidator(\n            new Validator({\n              publicKey,\n              registered,\n              votes,\n            }),\n          );\n        } else if (\n          ((registered !== undefined && !registered) || (registered === undefined && !validator.registered)) &&\n          ((votes !== undefined && votes.eq(utils.ZERO)) || (votes === undefined && validator.votes.eq(utils.ZERO)))\n        ) {\n          await deleteValidator({ publicKey: validator.publicKey });\n        } else {\n          await updateValidator(validator, { votes, registered });\n        }\n      }),\n    ),\n    validatorsCount === undefined\n      ? addValidatorsCount(\n          new ValidatorsCount({\n            votes: mutableValidatorsCountVotes,\n          }),\n        )\n      : updateValidatorsCount(validatorsCount, {\n          votes: mutableValidatorsCountVotes,\n        }),\n  ]);\n};\n\nexport const getValidators = async (\n  blockchain: Blockchain,\n  transactions: readonly Transaction[],\n): Promise<readonly ECPoint[]> => {\n  const cache = new ValidatorCache(blockchain);\n  await Promise.all(transactions.map(async (transaction) => processTransaction(blockchain, cache, transaction)));\n\n  const { validatorChanges, validatorsCountChanges } = await getDescriptorChanges({\n    transactions: transactions.filter(\n      (transaction): transaction is StateTransaction =>\n        transaction.type === TransactionType.State && transaction instanceof StateTransaction,\n    ),\n\n    getAccount: async (hash) => cache.getAccount(hash),\n    governingTokenHash: blockchain.settings.governingToken.hashHex,\n  });\n\n  await processStateTransaction({\n    validatorChanges,\n    validatorsCountChanges,\n    tryGetValidatorsCount: async () => cache.getValidatorsCount(),\n    addValidatorsCount: async (value) => cache.addValidatorsCount(value),\n    updateValidatorsCount: async (update) => {\n      await cache.updateValidatorsCount(update);\n    },\n    tryGetValidator: async (key) => cache.getValidator(key.publicKey),\n    addValidator: async (validator) => cache.addValidator(validator),\n    deleteValidator: async (key) => cache.deleteValidator(key.publicKey),\n    updateValidator: async (value, update) => cache.updateValidator(value.publicKey, update),\n  });\n\n  const [validatorsCount, validators] = await Promise.all([cache.getValidatorsCount(), cache.getAllValidators()]);\n\n  const numValidators = Math.max(\n    utils.weightedAverage(\n      utils\n        .weightedFilter(\n          validatorsCount.votes\n            .map((votes, count) => ({ count, votes: votes === undefined ? utils.ZERO : votes }))\n            .filter(({ votes }) => votes.gt(utils.ZERO)),\n          0.25,\n          0.75,\n          ({ count }) => new BN(count),\n        )\n        .map(([{ count }, weight]) => ({ value: count, weight })),\n    ),\n\n    blockchain.settings.standbyValidators.length,\n  );\n\n  const standbyValidatorsSet = new Set(\n    blockchain.settings.standbyValidators.map((publicKey) => common.ecPointToHex(publicKey)),\n  );\n\n  const validatorsPublicKeySet = new Set(\n    _.take(\n      validators\n        .filter(\n          (validator) =>\n            (validator.registered && validator.votes.gt(utils.ZERO)) ||\n            standbyValidatorsSet.has(common.ecPointToHex(validator.publicKey)),\n        )\n        .sort((aValidator, bValidator) =>\n          aValidator.votes.eq(bValidator.votes)\n            ? common.ecPointCompare(aValidator.publicKey, bValidator.publicKey)\n            : -aValidator.votes.cmp(bValidator.votes),\n        )\n        .map((validator) => common.ecPointToHex(validator.publicKey)),\n      numValidators,\n    ),\n  );\n\n  const standbyValidatorsArray = [...standbyValidatorsSet];\n  for (let i = 0; i < standbyValidatorsArray.length && validatorsPublicKeySet.size < numValidators; i += 1) {\n    validatorsPublicKeySet.add(standbyValidatorsArray[i]);\n  }\n\n  const validatorsPublicKeys = [...validatorsPublicKeySet].map((hex) => common.hexToECPoint(hex));\n\n  return validatorsPublicKeys.sort((aKey, bKey) => common.ecPointCompare(aKey, bKey));\n};\n"]}