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feat(Validator): Validator on Ethereum-specific Ledger Plugin
Signed-off-by: Takuma TAKEUCHI <[email protected]>
1 parent 1627c95 commit a58c81e

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‎packages/ledger-plugin/.gitkeep

Whitespace-only changes.

‎packages/ledger-plugin/go-ethereum/validator/src/.gitignore

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core/node_modules/
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core/package-lock.json
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dependent/node_modules/
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dependent/package-lock.json
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core/npm-debug.log
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‎packages/ledger-plugin/go-ethereum/validator/src/README.md

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<!--
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Copyright 2019-2020 Fujitsu Laboratories Ltd.
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SPDX-License-Identifier: Apache-2.0
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README.md
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-->
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# Validator of Ethereum-speicific Ledger Plugin
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## Assumption
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- A ledger (Ethereum node) to connect is already running
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- Specify URL of the ledger node to connect to in "provider" of "PluginConfig.js"
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## Execution
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<pre>
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cd core
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node ./bin/www.js
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</pre>

‎packages/ledger-plugin/go-ethereum/validator/src/build/Dockerfile

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# Copyright 2019-2020 Fujitsu Laboratories Ltd.
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# SPDX-License-Identifier: Apache-2.0
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FROM hyperledger/fabric-ccenv:x86_64-1.0.4
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#ENV http_proxy $HTTP_PROXY
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#ENV https_proxy $HTTP_PROXY
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#ENV HTTP_PROXY $HTTP_PROXY
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#ENV HTTPS_PROXY $HTTP_PROXY
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#ENV NO_PROXY "rest-server,ec1-connector,ec2-connector,geth1,geth2"
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RUN apt update
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RUN apt-get install -y screen
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RUN apt-get install -y npm
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#RUN npm -g config set proxy $HTTP_PROXY
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RUN npm -g install n
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RUN n --version
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RUN n 8.9.0
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RUN npm -g install express

‎packages/ledger-plugin/go-ethereum/validator/src/core/CA/connector.crt

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-----BEGIN CERTIFICATE-----
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MIIBdTCCARoCCQC/F+Mh551QzDAKBggqhkjOPQQDAjBCMQswCQYDVQQGEwJKUDEQ
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MA4GA1UECAwHZXNqbXMxMjEhMB8GA1UECgwYSW50ZXJuZXQgV2lkZ2l0cyBQdHkg
4+
THRkMB4XDTE4MDYyNzA3MjIzNVoXDTI4MDYyNDA3MjIzNVowQjELMAkGA1UEBhMC
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SlAxEDAOBgNVBAgMB2Vzam1zMTIxITAfBgNVBAoMGEludGVybmV0IFdpZGdpdHMg
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UHR5IEx0ZDBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABDPpSD2w0zrqJKraGD1b
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5Jq2sDuacThSUqi7fvz8oyrWtuKDjZ15zIaSOtak6XRxFh9V9Gokdg5GNbW/pTZc
8+
TuowCgYIKoZIzj0EAwIDSQAwRgIhAKH6ERsyd5bpEMIkY4clPqguwDWoTLk2VKq6
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ONEhUqotAiEA4yJxGmZpFdRScG2gDUIF2VDeX+XfHdJI2J41hyW9/zI=
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-----END CERTIFICATE-----

‎packages/ledger-plugin/go-ethereum/validator/src/core/CA/connector.csr

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-----BEGIN CERTIFICATE REQUEST-----
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MIH9MIGkAgEAMEIxCzAJBgNVBAYTAkpQMRAwDgYDVQQIDAdlc2ptczEyMSEwHwYD
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VQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQwWTATBgcqhkjOPQIBBggqhkjO
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PQMBBwNCAAQz6Ug9sNM66iSq2hg9W+SatrA7mnE4UlKou378/KMq1rbig42decyG
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kjrWpOl0cRYfVfRqJHYORjW1v6U2XE7qoAAwCgYIKoZIzj0EAwIDSAAwRQIgCUA1
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B5mZK7Hx79J1xBb0MGwuoUkt4bGPXbHqWEMZXQMCIQCRgadPkrNw56+pT5MVxA5K
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vV6xTgmxUYrYnpkR4tptqQ==
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-----END CERTIFICATE REQUEST-----

‎packages/ledger-plugin/go-ethereum/validator/src/core/CA/connector.priv

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-----BEGIN EC PARAMETERS-----
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BggqhkjOPQMBBw==
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-----END EC PARAMETERS-----
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-----BEGIN EC PRIVATE KEY-----
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MHcCAQEEICIlCfK3zMTFzUgdaj01LAHjJmHlbg6Xql9+i70iPz5EoAoGCCqGSM49
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AwEHoUQDQgAEM+lIPbDTOuokqtoYPVvkmrawO5pxOFJSqLt+/PyjKta24oONnXnM
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hpI61qTpdHEWH1X0aiR2DkY1tb+lNlxO6g==
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-----END EC PRIVATE KEY-----

‎packages/ledger-plugin/go-ethereum/validator/src/core/app.js

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/*
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* Copyright 2019-2020 Fujitsu Laboratories Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*
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* app.js
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*/
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/* Summary:
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*
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*/
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var express = require('express');
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var cookieParser = require('cookie-parser');
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var bodyParser = require('body-parser');
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var app = express();
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app.use(bodyParser.json());
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app.use(bodyParser.urlencoded({ extended: false }));
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app.use(cookieParser());
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// catch 404 and forward to error handler
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app.use(function(req, res, next) {
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var err = new Error('Not Found');
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err.status = 404;
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next(err);
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});
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// error handler
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app.use(function(err, req, res, next) {
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// set locals, only providing error in development
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res.locals.message = err.message;
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res.locals.error = req.app.get('env') === 'development' ? err : {};
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// render the error page
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res.status(err.status || 500);
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console.log(err);
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res.send(err);
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});
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module.exports = app;

‎packages/ledger-plugin/go-ethereum/validator/src/core/config/default.js

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/*
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* Copyright 2019-2020 Fujitsu Laboratories Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*
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* default.js
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*/
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module.exports = {
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// Defined value for the destination independent part.
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// Destination dependent definition values should be in lib/PluginConfig.js.
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"sslParam" : {
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"port" : 5050,
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"key" : './CA/connector.priv',
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"cert" : './CA/connector.crt'
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},
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// Log level (trace/debug/info/warn/error/fatal)
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"logLevel" : "debug"
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};

‎packages/ledger-plugin/go-ethereum/validator/src/core/package.json

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{
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"name": "connector",
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"version": "0.0.0",
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"private": true,
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"scripts": {
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"start": "node ./bin/www"
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},
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"dependencies": {
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"body-parser": "~1.17.1",
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"config": "^1.26.1",
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"cookie-parser": "~1.4.3",
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"debug": "~4.1.1",
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"express": "~4.15.2",
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"log4js": "^3.0.6",
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"morgan": "~1.8.1",
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"serve-favicon": "~2.4.2",
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"socket.io": "^2.0.4"
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}
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}

‎packages/ledger-plugin/go-ethereum/validator/src/dependent/PluginConfig.js

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/*
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* Copyright 2019-2020 Fujitsu Laboratories Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*
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* PluginConfig.js
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*/
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/*
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* Summary:
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* Configuration file of cooperation server: a part dependent on end-chains
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* Definition values specific to the connection dependent part, etc.
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*/
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module.exports = {
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// URL to operate and monitor
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//"provider" : 'http://geth1:8545'
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"provider" : 'http://localhost:8545'
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};

‎packages/ledger-plugin/go-ethereum/validator/src/dependent/PluginUtil.js

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/*
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* Copyright 2019-2020 Fujitsu Laboratories Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*
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* PluginUtil.js
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*/
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/*
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* Summary:
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* Cooperation server: utility library dependent on endchains
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* For example, implementing internal functions that should not be exposed as functions of server plugins.
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*/
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/*
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* convNum
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*
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* @param {String/Number} value: The scientific string or numeric value to be converted. For numbers, it is returned as is.
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* @param {String/Number} default_value: The value to use if conversion was not possible. Text or number in scientific notation. Optional.
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*
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* @return {Number} The value converted to a number, or the default_value if the conversion failed.
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*
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* @desc exponentiation is also supported. The following formats are supported:. (value, default_value)
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* 3.78*10^14
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* 3.78e14
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*/
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exports.convNum = function(value, default_value) {
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var retvalue = 0;
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var def_value = 0;
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switch(typeof(default_value)) {
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case "number":
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def_value = default_value;
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break;
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case "string":
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var def_value_str = default_value.replace(/\*10\^/g, "e");
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def_value = parseFloat(def_value_str);
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break;
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default: // undefined should also be included here.
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// Fixed value because of cumbersome handling.
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def_value = 0;
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break;
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} // switch(typeof(default_value))
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if(def_value==NaN) { // number is guaranteed.
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def_value = 0;
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}
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switch(typeof(value)) {
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case "number":
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retvalue = value;
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break;
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case "string":
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var value_str = value.replace(/\*10\^/g, "e");
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retvalue = parseFloat(value_str);
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break;
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default:
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// Set default value.
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retvalue = def_value;
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break;
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} // switch(typeof(value))
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if(retvalue==NaN) { // number is guaranteed.
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retvalue = def_value;
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}
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return retvalue;
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}
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‎packages/ledger-plugin/go-ethereum/validator/src/dependent/ServerMonitorPlugin.js

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/*
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* Copyright 2019-2020 Fujitsu Laboratories Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*
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* ServerMonitorPlugin.js
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*/
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/*
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* Summary:
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* Connector: monitoring class of a part dependent on end-chains
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* Used in the case of monitoring continuously.
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* Processing that ends with the acceptance of a single event is handled by a custom function implementation in server plugins.
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* Unlike server plugins, it basically does not handle its own functions.
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*/
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// configuration file
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var SplugConfig = require('./PluginConfig.js');
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var config = require('config');
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// Log settings
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var log4js = require('log4js');
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var logger = log4js.getLogger('ServerMonitorPlugin[' + process.pid + ']');
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logger.level = config.logLevel;
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// Load libraries, SDKs, etc. according to specifications of endchains as needed
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var Web3 = require('web3');
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/*
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* ServerMonitorPlugin
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* Class definitions of server monitoring
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*/
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var ServerMonitorPlugin = class {
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/*
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* constructors
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*/
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constructor(){
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// Define dependent specific settings
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// Initialize monitored filter
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this._filterTable = {};
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}
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/*
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* startMonitor
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* Start Monitoring
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* @param {string} clientId: Client ID from which monitoring start request was made
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* @param {function} cb: A callback function that receives monitoring results at any time.
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*/
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startMonitor(clientId, cb) {
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logger.info('*** START MONITOR ***');
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logger.info('Client ID :' + clientId);
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// Implement handling to receive events from an end-chain and return them in a callback function
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var filter = this._filterTable[clientId];
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if (!filter) {
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logger.info('create new web3 filter and start watching.');
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try {
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var web3 = new Web3();
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var provider = new web3.providers.HttpProvider(SplugConfig.provider);
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web3.setProvider(provider);
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filter = web3.eth.filter("latest");
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// filter should be managed by client ID
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// (You should never watch multiple urls from the same client)
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this._filterTable[clientId] = filter;
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filter.watch(function (error, blockHash) {
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if (!error) {
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console.log('##[HL-BC] Notify new block data(D2)');
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var blockData = web3.eth.getBlock(blockHash, true);
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var trLength = blockData.transactions.length;
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logger.info(trLength + " transactions in block " + blockData.number);
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console.log('##[HL-BC] Validate transactions(D3)');
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console.log('##[HL-BC] digital sign on valid transaction(D4)');
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if (trLength > 0) {
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logger.info('*** SEND BLOCK DATA ***');
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// Notify only if transaction exists
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var ret_obj = {
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"status" : 200,
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"blockData" : blockData
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};
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cb(ret_obj);
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}
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} else {
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var err_obj = {
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"status" : 504,
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"errorDetail" : error
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};
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cb(err_obj);
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}
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});
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} catch (e) {
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var emsg = e.toString().replace(/Error: /g , "");
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var err_obj = {
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"status" : 504,
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"errorDetail" : emsg
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};
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cb(err_obj);
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}
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} else {
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logger.info('target filter has already start watching.');
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}
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}
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/*
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* stopMonitor
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* monitoring stop
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* @param {string} clientId: Client ID from which monitoring stop request was made
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*/
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stopMonitor(clientId) {
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// Implement a process to end EC monitoring
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var filter = this._filterTable[clientId];
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if (filter) {
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// Stop the filter & Remove it from table
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logger.info('stop watching and remove filter.');
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filter.stopWatching();
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delete this._filterTable[clientId];
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}
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}
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} /* class */
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module.exports = ServerMonitorPlugin;
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