GitHub Actions Runner

src/Runner.Worker/Container/DockerUtil.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace GitHub.Runner.Worker.Container
+{
+    public class DockerUtil
+    {
+        public static List<PortMapping> ParseDockerPort(IList<string> portMappingLines)
+        {
+            const string targetPort = "targetPort";
+            const string proto = "proto";
+            const string host = "host";
+            const string hostPort = "hostPort";
+
+            //"TARGET_PORT/PROTO -> HOST:HOST_PORT"
+            string pattern = $"^(?<{targetPort}>\\d+)/(?<{proto}>\\w+) -> (?<{host}>.+):(?<{hostPort}>\\d+)$";
+
+            List<PortMapping> portMappings = new List<PortMapping>();
+            foreach(var line in portMappingLines)
+            {
+                Match m = Regex.Match(line, pattern, RegexOptions.None, TimeSpan.FromSeconds(1));
+                if (m.Success)
+                {
+                    portMappings.Add(new PortMapping(
+                        m.Groups[hostPort].Value,
+                        m.Groups[targetPort].Value,
+                        m.Groups[proto].Value
+                    ));
+                }
+            }
+            return portMappings;
+        }
+
+        public static string ParsePathFromConfigEnv(IList<string> configEnvLines)
+        {
+            // Config format is VAR=value per line
+            foreach (var line in configEnvLines)
+            {
+                var keyValue = line.Split("=", 2);
+                if (keyValue.Length == 2 && string.Equals(keyValue[0], "PATH"))
+                {
+                    return keyValue[1];
+                }
+            }
+            return "";
+        }
+    }
+}