Merge pull request #1 from vladbatushkov/args

Introduce args to manage console app

Author: vladbatushkov

Dockerfile

@@ -3,5 +3,6 @@ WORKDIR /src
 COPY Strazh Strazh/
 RUN dotnet build /src/Strazh/Strazh.csproj -c Release -o /app
 WORKDIR /app
-ENV path=default
-CMD ["sh", "-c", "dotnet Strazh.dll $path"]
+ENV path=Project.csproj
+ENV cred=neo4j:neo4j:test
+CMD ["sh", "-c", "dotnet Strazh.dll -p $path -c $cred"]

Strazh/Database/DbManager.cs

@@ -10,18 +10,29 @@ public static class DbManager
     {
         private const string DBNAME = "neo4j";
         private const string USER = "neo4j";
-        private const string PASSWORD = "strazh";
+        private const string PASSWORD = "test";
         private const string CONNECTION = "neo4j://localhost:7687";
 
-        public static async Task InsertData(IEnumerable<Triple> triples, bool isOverride = true)
+        public static async Task InsertData(IEnumerable<Triple> triples, string credentials = null, bool isOverride = true)
         {
-            var driver = GraphDatabase.Driver(CONNECTION, AuthTokens.Basic(USER, PASSWORD));
-            var session = driver.AsyncSession(o => o.WithDatabase(DBNAME));
+            var cred = new[] { DBNAME, USER, PASSWORD };
+            if (!string.IsNullOrEmpty(credentials))
+            {
+                var args = credentials.Split(":");
+                if (args.Length == 3)
+                {
+                    cred = args;
+                }
+            }
+            Console.WriteLine($"Connecting to Neo4j database={cred[0]}, user={cred[1]}, password={cred[2]}");
+            var driver = GraphDatabase.Driver(CONNECTION, AuthTokens.Basic(cred[1], cred[2]));
+            var session = driver.AsyncSession(o => o.WithDatabase(cred[0]));
             try
             {
                 if (isOverride)
                 {
                     await session.RunAsync("MATCH (n) DETACH DELETE n;");
+                    Console.WriteLine($"Database `{cred[0]}` is cleaned.");
                 }
                 foreach (var triple in triples)
                 {

Strazh/Program.cs

@@ -1,4 +1,6 @@
 using System;
+using System.CommandLine;
+using System.CommandLine.Invocation;
 using System.Threading.Tasks;
 using Strazh.Analysis;
 using Strazh.Database;
@@ -7,7 +9,25 @@ namespace Strazh
 {
     class Program
     {
-        static async Task Main(string[] args)
+        static async Task Main(params string[] args)
+        {
+            var rootCommand = new RootCommand();
+
+            var optionPath = new Option<string>("--path", "absolute path to .csproj file");
+            optionPath.AddAlias("-p");
+            optionPath.IsRequired = true;
+            rootCommand.Add(optionPath);
+
+            var optionCred = new Option<string>("--credentials", "credentials of `dbname:user:password` to connect to Neo4j batabase");
+            optionCred.AddAlias("-c");
+            rootCommand.Add(optionCred);
+
+            rootCommand.Handler = CommandHandler.Create<string, string>(BuildKnowledgeGraph);
+
+            await rootCommand.InvokeAsync(args);
+        }
+
+        static async Task BuildKnowledgeGraph(string path, string credentials)
         {
             try
             {
@@ -17,10 +37,9 @@ static async Task Main(string[] args)
                     Console.WriteLine("Strazh disappointed. There is no Neo4j instance ready to use.");
                     return;
                 }
-                Console.WriteLine("Brewing the Knowledge Graph...");
-                var triples = await Analyzer.Analyze(args[0]);
-                await DbManager.InsertData(triples);
-                Console.WriteLine("Enjoy the Knowledge Graph of your codebase!");
+                Console.WriteLine("Brewing the Knowledge Graph.");
+                var triples = await Analyzer.Analyze(path);
+                await DbManager.InsertData(triples, credentials);
             }
             catch (Exception ex)
             {

Strazh/Strazh.csproj

@@ -3,6 +3,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp3.1</TargetFramework>
+    <Version>1.0.0-alpha.1</Version>
   </PropertyGroup>
 
   <ItemGroup>
@@ -12,7 +13,7 @@
     <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.0.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.Csharp" Version="3.8.0" />
     <PackageReference Include="Neo4j.Driver" Version="4.2.0" />
-    <PackageReference Include="Neo4j.Driver.Reactive" Version="4.2.0" />
+    <PackageReference Include="System.CommandLine" Version="2.0.0-beta1.20574.7" />
   </ItemGroup>
 
 </Project>

docker-compose.yml

@@ -2,13 +2,15 @@ version: '3'
 services:
 
   strazh:
-    image: vladbatushkov/strazh:1.0.0-alpha
+    build: .
+    image: vladbatushkov/strazh:1.0.0-alpha.1
     container_name: strazh
     network_mode: host
     volumes:
       - ./Strazh:/dest
     environment:
       - path=/dest/Strazh.csproj
+      - cred=neo4j:neo4j:strazh
     depends_on:
       - neo4j