Arg and env-var parsing
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benbierens
parent
40046d9bcb
commit
e5a7f04c4e
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@ -0,0 +1,89 @@
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namespace CodexNetDeployer
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{
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public class ArgOrVar
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{
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public static readonly ArgVar CodexImage = new ArgVar("codex-image", "CODEXIMAGE", "Docker image of Codex.");
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public static readonly ArgVar GethImage = new ArgVar("geth-image", "GETHIMAGE", "Docker image of Geth.");
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public static readonly ArgVar ContractsImage = new ArgVar("contracts-image", "CONTRACTSIMAGE", "Docker image of Codex Contracts deployer.");
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public static readonly ArgVar KubeConfigFile = new ArgVar("kube-config", "KUBECONFIG", "Path to Kubeconfig file.");
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public static readonly ArgVar KubeNamespace = new ArgVar("kube-namespace", "KUBENAMESPACE", "Kubernetes namespace to be used for deployment.");
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public static readonly ArgVar NumberOfCodexNodes = new ArgVar("nodes", "NODES", "Number of Codex nodes to be created.");
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public static readonly ArgVar StorageQuota = new ArgVar("storage-quota", "STORAGEQUOTA", "Storage quota in megabytes used by each Codex node.");
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private readonly string[] args;
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public ArgOrVar(string[] args)
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{
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this.args = args;
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}
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public string Get(ArgVar key, string defaultValue = "")
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{
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var argKey = $"--{key.Arg}=";
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var arg = args.FirstOrDefault(a => a.StartsWith(argKey));
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if (arg != null)
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{
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return arg.Substring(argKey.Length);
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}
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var env = Environment.GetEnvironmentVariable(key.Var);
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if (env != null)
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{
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return env;
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}
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return defaultValue;
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}
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public int? GetInt(ArgVar key)
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{
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var str = Get(key);
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if (string.IsNullOrEmpty(str)) return null;
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if (int.TryParse(str, out int result))
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{
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return result;
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}
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return null;
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}
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public void PrintHelp()
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{
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var nl = Environment.NewLine;
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Console.WriteLine("CodexNetDeployer allows you to easily deploy multiple Codex nodes in a Kubernetes cluster. " +
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"The deployer will set up the required supporting services, deploy the Codex on-chain contracts, start and bootstrap the Codex instances. " +
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"All Kubernetes objects will be created in the namespace provided, allowing you to easily find, modify, and delete them afterwards." + nl);
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Console.Write("\t[ CLI argument ] or [ Environment variable ]");
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Console.CursorLeft = 70;
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Console.Write("(Description)" + nl);
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var fields = GetType().GetFields();// System.Reflection.BindingFlags.Public & System.Reflection.BindingFlags.Static);
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foreach (var field in fields)
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{
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var value = (ArgVar)field.GetValue(null)!;
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value.PrintHelp();
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}
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}
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}
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public class ArgVar
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{
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public ArgVar(string arg, string var, string description)
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{
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Arg = arg;
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Var = var;
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Description = description;
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}
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public string Arg { get; }
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public string Var { get; }
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public string Description { get; }
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public void PrintHelp()
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{
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Console.Write($"\t[ --{Arg}=... ] or [ {Var}=... ]");
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Console.CursorLeft = 70;
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Console.Write(Description + Environment.NewLine);
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}
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}
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}
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@ -7,4 +7,8 @@
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<ItemGroup>
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<ProjectReference Include="..\DistTestCore\DistTestCore.csproj" />
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</ItemGroup>
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</Project>
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@ -0,0 +1,84 @@
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namespace CodexNetDeployer
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{
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public class Configuration
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{
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public Configuration(
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string codexImage,
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string gethImage,
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string contractsImage,
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string kubeConfigFile,
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string kubeNamespace,
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int? numberOfCodexNodes,
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int? storageQuota)
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{
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CodexImage = codexImage;
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GethImage = gethImage;
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ContractsImage = contractsImage;
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KubeConfigFile = kubeConfigFile;
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KubeNamespace = kubeNamespace;
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NumberOfCodexNodes = numberOfCodexNodes;
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StorageQuota = storageQuota;
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}
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public string CodexImage { get; }
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public string GethImage { get; }
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public string ContractsImage { get; }
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public string KubeConfigFile { get; }
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public string KubeNamespace { get; }
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public int? NumberOfCodexNodes { get; }
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public int? StorageQuota { get; }
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public void PrintConfig()
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{
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ForEachProperty(onString: Print, onInt: Print);
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}
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public List<string> Validate()
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{
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var errors = new List<string>();
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ForEachProperty(
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onString: (n, v) => StringIsSet(n, v, errors),
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onInt: (n, v) => IntIsOverZero(n, v, errors));
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return errors;
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}
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private void ForEachProperty(Action<string, string> onString, Action<string, int?> onInt)
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{
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var properties = GetType().GetProperties();
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foreach (var p in properties)
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{
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if (p.PropertyType == typeof(string)) onString(p.Name, (string)p.GetValue(this)!);
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if (p.PropertyType == typeof(int?)) onInt(p.Name, (int?)p.GetValue(this)!);
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}
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}
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private static void IntIsOverZero(string variable, int? value, List<string> errors)
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{
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if (value == null || value.Value < 1)
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{
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errors.Add($"{variable} is must be set and must be greater than 0.");
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}
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}
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private static void StringIsSet(string variable, string value, List<string> errors)
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{
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if (string.IsNullOrWhiteSpace(value))
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{
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errors.Add($"{variable} is must be set.");
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}
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}
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private static void Print(string variable, string value)
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{
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Console.WriteLine($"\t{variable}: '{value}'");
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}
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private static void Print(string variable, int? value)
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{
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if (value != null) Print(variable, value.ToString()!);
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else Print(variable, "<NONE>");
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}
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}
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}
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@ -1,7 +1,46 @@
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public class Program
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using CodexNetDeployer;
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using DistTestCore.Codex;
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using DistTestCore.Marketplace;
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public class Program
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{
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public static void Main(string[] args)
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{
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Console.WriteLine("Hello, World!");
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var nl = Environment.NewLine;
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Console.WriteLine("CodexNetDeployer" + nl + nl);
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var argOrVar = new ArgOrVar(args);
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if (args.Any(a => a == "-h" || a == "--help" || a == "-?"))
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{
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argOrVar.PrintHelp();
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return;
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}
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var config = new Configuration(
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codexImage: argOrVar.Get(ArgOrVar.CodexImage, CodexContainerRecipe.DockerImage),
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gethImage: argOrVar.Get(ArgOrVar.GethImage, GethContainerRecipe.DockerImage),
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contractsImage: argOrVar.Get(ArgOrVar.ContractsImage, CodexContractsContainerRecipe.DockerImage),
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kubeConfigFile: argOrVar.Get(ArgOrVar.KubeConfigFile),
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kubeNamespace: argOrVar.Get(ArgOrVar.KubeNamespace),
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numberOfCodexNodes: argOrVar.GetInt(ArgOrVar.NumberOfCodexNodes),
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storageQuota: argOrVar.GetInt(ArgOrVar.StorageQuota)
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);
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Console.WriteLine("Using:");
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config.PrintConfig();
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Console.WriteLine(nl);
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var errors = config.Validate();
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if (errors.Any())
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{
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Console.WriteLine($"Configuration errors: ({errors.Count})");
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foreach ( var error in errors ) Console.WriteLine("\t" + error);
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Console.WriteLine(nl);
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argOrVar.PrintHelp();
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return;
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}
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}
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}
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