Merge pull request #13 from p2p-org/dshackle-cli-tool

dshackle cli tool

.gitignore

@@ -11,4 +11,5 @@ testsetup/
 *.iws
 
 # nix
-env
+env
+/dshackle-cli/node_modules/

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "emerald-java-client"]
 	path = emerald-java-client
 	url = git@github.com:p2p-org/emerald-java-client.git
+[submodule "dshackle-cli/grpc"]
+	path = dshackle-cli/grpc
+	url = https://github.com/emeraldpay/emerald-grpc.git

dshackle-cli/README.md

@@ -0,0 +1,21 @@
+# DSHACKLE CLI
+
+A CLI tool to verify the [dshacle](https://github.com/emeraldpay/dshackle) installation.
+
+## Usage
+```
+npx dchackle-cli-tool [-p|--print] <dshackle instance url>
+```
+
+### Options
+-p | --print - will print the describe response as is
+
+## Example
+
+```
+> dchackle-cli-tool localhost:2449
+Connecting to: localhost:2449...
+Connected to  localhost:2449
+CHAIN_ETHEREUM -> AVAIL_OK
+CHAIN_KOVAN -> AVAIL_OK
+```

dshackle-cli/bin/dshackle-cli-tool

@@ -0,0 +1,4 @@
+#!/usr/bin/env node
+
+require = require('esm')(module /*, options*/);
+require('../src/cli').cli(process.argv);

dshackle-cli/package.json

@@ -0,0 +1,29 @@
+{
+  "name": "dshackle-cli-tool",
+  "version": "1.0.4",
+  "description": "",
+  "main": "src/index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "bin": {
+    "@mfomenkov/dshackle-cli-tool": "bin/dshackle-cli-tool",
+    "dshackle-cli-tool": "bin/dshackle-cli-tool"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "@grpc/grpc-js": "^1.6.12",
+    "@grpc/proto-loader": "^0.7.2",
+    "arg": "^5.0.2",
+    "cli-color": "^2.0.3",
+    "esm": "^3.2.25",
+    "inquirer": "^9.1.1"
+  },
+  "files": [
+    "bin/",
+    "src/",
+    "grpc/"
+  ]
+}

dshackle-cli/src/cli.js

@@ -0,0 +1,57 @@
+import {describe} from "./grpc-clent";
+import arg from 'arg';
+import clc from "cli-color";
+import util from "util";
+
+export function cli(args) {
+    let opts = parseArgumentsIntoOptions(args);
+    if (!opts.url) {
+        console.log("Err: URL not specified!")
+        return
+    }
+    describe(opts.url, (error, response) => {
+        if (error) {
+            console.error(clc.red('Connection to ' + opts.url + ' failed! [' + error.message + ']'));
+        } else {
+            console.error(clc.green('Connected to ', opts.url));
+            if (opts.print) {
+                console.log(util.inspect(response, false, null, true /* enable colors */));
+            } else {
+                response.chains.forEach(function (item) {
+                    var state = item.status.availability;
+
+                    switch (state) {
+                        case 'AVAIL_OK':
+                            state = clc.green(state);
+                            break
+                        case 'AVAIL_UNKNOWN':
+                        case 'AVAIL_UNAVAILABLE':
+                            state = clc.red(state);
+                            break
+                        default:
+                            state = clc.yellow(state);
+                    }
+                    console.log(item.status.chain + ' -> ' + clc.bold(state))
+                })
+            }
+        }
+    })
+}
+
+function parseArgumentsIntoOptions(rawArgs) {
+    const args = arg(
+        {
+            '--print': Boolean,
+            '-p': '--print'
+        },
+        {
+            argv: rawArgs.slice(2),
+        }
+    );
+    return {
+        print: args['--print'] || false,
+        url: args._[0]
+    };
+}
+
+

dshackle-cli/src/grpc-clent.js

@@ -0,0 +1,25 @@
+const grpc = require("@grpc/grpc-js");
+const path = require('path')
+const protoLoader = require("@grpc/proto-loader");
+
+const PROTO_PATH = path.join(__dirname, "../grpc/proto/blockchain.proto");
+
+const options = {
+    keepCase: true,
+    longs: String,
+    enums: String,
+    defaults: true,
+    oneofs: true,
+};
+
+const packageDefinition = protoLoader.loadSync(PROTO_PATH, options);
+const emerald = grpc.loadPackageDefinition(packageDefinition).emerald
+
+export function describe(url, handler) {
+    const client = new emerald.Blockchain(
+        url,
+        grpc.credentials.createInsecure()
+    );
+    console.log('Connecting to: ' + url + '...')
+    client.Describe({}, handler);
+}