From f1da50c5c0083b84ae8656edc5c82d0dfbbc7a7b Mon Sep 17 00:00:00 2001
From: Trolli Schmittlauch <t.schmittlauch@orlives.de>
Date: Fri, 9 Oct 2020 01:20:40 +0200
Subject: [PATCH] update Hash2Pub testbed container and make it more
 configurable

---
 nixos/Hash2PubTestbed.nix | 52 +++++++++++++++++++++++++--------------
 nixos/configuration.nix   |  7 +++++-
 2 files changed, 40 insertions(+), 19 deletions(-)

diff --git a/nixos/Hash2PubTestbed.nix b/nixos/Hash2PubTestbed.nix
index dec7d72..1efbfe6 100644
--- a/nixos/Hash2PubTestbed.nix
+++ b/nixos/Hash2PubTestbed.nix
@@ -1,10 +1,20 @@
-{ config, pkgs, ... }:
+{ config, pkgs, experimentUid ? 1000, ... }:
 
 let
   projectDir = "/home/spiollinux/Seafile/Studium/Semester11/INF-PM-FP-ANW";
   projectPath = builtins.toPath projectDir;
   projectMount = "/mnt/project";
-  shell = import (projectDir + "/Hash2Pub/shell.nix");
+  shell = (import (projectDir + "/Hash2Pub/default.nix") {}).shell;
+  simulationSetupScript = pkgs.writeShellScriptBin "simulationSetup" ''
+    # make cabal-install work offline
+    mkdir $HOME/.cabal
+    echo "" > $HOME/.cabal/config
+
+    # run simulation script within the shell
+    ${pkgs.nix}/bin/nix-shell ${shell.drvPath} --command "cd ${projectMount} && bash ./build/simulationrunner.sh 2>&1"
+    '';
+  instanceData = builtins.fromJSON (builtins.readFile "${projectDir}/simulationData/inputs/generated/instances_sample.json");
+
 in
 
 {
@@ -17,30 +27,36 @@ in
   config = {
     networking = {
       firewall.enable = false;
-      interfaces.lo.ipv6.addresses = [
-        {address = "2604:a880:800:10::34e1:d001"; prefixLength = 0;}
-        {address = "2001:41d0:2:c0af::15"; prefixLength = 0;}
-        {address = "2a01:e0a:23a:5600::2"; prefixLength = 64;}
-      ];
-      extraHosts = ''
-        2604:a880:800:10::34e1:d001 animalliberation.social
-        2001:41d0:2:c0af::15 hostux.social
-        2a01:e0a:23a:5600::2 social.imirhil.fr
-        '';
+      interfaces.lo.ipv6.addresses =
+        builtins.map (inst: {address = inst.ip; prefixLength = 0;}) instanceData;
+        extraHosts = 
+          pkgs.lib.concatMapStringsSep "\n" (inst: "${inst.ip} ${inst.hostname}") instanceData;
     };
+    # avoid permission problems with project builds
+    users.users.experimentor = {
+      uid = experimentUid;
+      isNormalUser = true;
+    };
+
+    # adjust open file limits
+    security.pam.loginLimits = [{
+        domain = "*"
+      ; type = "-"
+      ; item = "nofile"
+      ; value = "50000"
+      ;}];
+
     environment.systemPackages = [
       pkgs.netcat
       pkgs.iproute
       pkgs.tmux
       pkgs.ping
+      pkgs.lsof
+      pkgs.iftop
       (pkgs.writeShellScriptBin "doSimulation" ''
-        # make cabal-install work offline
-        mkdir $HOME/.cabal
-        echo "" > $HOME/.cabal/config
-
-        # run simulation script within the shell
-        ${pkgs.nix}/bin/nix-shell ${shell.drvPath} --command "cd ${projectMount} && bash simtest.sh"
+        su experimentor -c "${simulationSetupScript}/bin/simulationSetup"
         '')
+      pkgs.tcpdump
     ];
   };
 }
diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index 3a4461b..4f1d773 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -198,7 +198,12 @@ in
 
   # declarative containers
   containers = {
-    hash2PubSim = import ./Hash2PubTestbed.nix {inherit pkgs config;};
+    hash2PubSim = import ./Hash2PubTestbed.nix
+      {
+        inherit pkgs config;
+        experimentUid = config.users.users.spiollinux.uid;
+        projectDir = "/home/spiollinux/Seafile/Studium/Semester11/INF-PM-FP-ANW";
+      };
   };
 
   # stop NetworkManager from managing virtual interfaces