Implement vm startup and shutdown

1 files changed, 175 insertions, 0 deletions

diff --git a/bbot/machine-manifest.cxx b/bbot/machine-manifest.cxx
new file mode 100644
index 0000000..9145ed4
--- /dev/null
+++ b/bbot/machine-manifest.cxx
@@ -0,0 +1,175 @@
+// file      : bbot/machine-manifest.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <bbot/machine-manifest>
+
+#include <butl/manifest-parser>
+#include <butl/manifest-serializer>
+
+using namespace butl;
+
+namespace bbot
+{
+  using parser = manifest_parser;
+  using parsing = manifest_parsing;
+  using serializer = manifest_serializer;
+  using serialization = manifest_serialization;
+  using name_value = manifest_name_value;
+
+  // machine_type
+  //
+  string
+  to_string (machine_type t)
+  {
+    switch (t)
+    {
+    case machine_type::kvm:    return "kvm";
+    case machine_type::nspawn: return "nspawn";
+    }
+
+    assert (false);
+    return string ();
+  }
+
+  machine_type
+  to_machine_type (const string& t)
+  {
+         if (t == "kvm")    return machine_type::kvm;
+    else if (t == "nspawn") return machine_type::nspawn;
+    else throw invalid_argument ("invalid machine type '" + t + "'");
+  }
+
+  // machine_manifest
+  //
+  machine_manifest::
+  machine_manifest (parser& p, bool iu)
+      : machine_manifest (p, p.next (), iu)
+  {
+    // Make sure this is the end.
+    //
+    name_value nv (p.next ());
+    if (!nv.empty ())
+      throw parsing (p.name (), nv.name_line, nv.name_column,
+                     "single machine manifest expected");
+  }
+
+  machine_manifest::
+  machine_manifest (parser& p, name_value nv, bool iu)
+  {
+    auto bad_name = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.name_line, nv.name_column, d);
+    };
+
+    auto bad_value = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.value_line, nv.value_column, d);
+    };
+
+    // Make sure this is the start and we support the version.
+    //
+    if (!nv.name.empty ())
+      bad_name ("start of machine manifest expected");
+
+    if (nv.value != "1")
+      bad_value ("unsupported format version");
+
+    optional<machine_type> type;
+
+    for (nv = p.next (); !nv.empty (); nv = p.next ())
+    {
+      string& n (nv.name);
+      string& v (nv.value);
+
+      if (n == "id")
+      {
+        if (!id.empty ())
+          bad_name ("machine id redefinition");
+
+        if (v.empty ())
+          bad_value ("empty machine id");
+
+        id = move (v);
+      }
+      else if (n == "name")
+      {
+        if (!name.empty ())
+          bad_name ("machine name redefinition");
+
+        if (v.empty ())
+          bad_value ("empty machine name");
+
+        name = move (v);
+      }
+      else if (n == "summary")
+      {
+        if (!summary.empty ())
+          bad_name ("machine summary redefinition");
+
+        if (v.empty ())
+          bad_value ("empty machine summary");
+
+        summary = move (v);
+      }
+      else if (n == "type")
+      {
+        if (type)
+          bad_name ("machine type redefinition");
+
+        try
+        {
+          type = to_machine_type (v);
+        }
+        catch (const invalid_argument&)
+        {
+          bad_value ("invalid machine type");
+        }
+      }
+      else if (n == "mac")
+      {
+        if (mac)
+          bad_name ("machine mac redefinition");
+
+        mac = move (v);
+      }
+      else if (!iu)
+        bad_name ("unknown name '" + n + "' in machine manifest");
+    }
+
+    // Verify all non-optional values were specified.
+    //
+    if (id.empty ())
+      bad_value ("no machine id specified");
+
+    if (name.empty ())
+      bad_value ("no machine name specified");
+
+    if (summary.empty ())
+      bad_value ("no machine summary specified");
+
+    if (!type)
+      bad_value ("no machine type specified");
+
+    this->type = *type;
+  }
+
+  void machine_manifest::
+  serialize (serializer& s) const
+  {
+    // @@ Should we check that all non-optional values are specified and all
+    //    values are valid?
+    //
+    s.next ("", "1"); // Start of manifest.
+    s.next ("id", id);
+    s.next ("name", name);
+    s.next ("summary", summary);
+    s.next ("type", to_string (type));
+
+    if (mac)
+      s.next ("mac", *mac);
+
+    s.next ("", ""); // End of manifest.
+  }
+
+}