/// <summary>
/// Gets instances that depend on a capability
/// </summary>
/// <param name="capability"></param>
/// <returns></returns>
public IEnumerable<AppInstance> GetDependents(Capability capability)
{
if (!dependents.ContainsKey(capability))
{
dependents[capability] = new SortedSet<string>();
}
return dependents[capability].Select(instanceId => instances[instanceId]);
}
/// <summary>
/// Gets instances that provide a capability
/// </summary>
/// <param name="capability"></param>
/// <returns></returns>
public IEnumerable<AppInstance> GetProviders(Capability capability)
{
if (!providers.ContainsKey(capability))
{
providers[capability] = new SortedSet<string>();
}
return providers[capability].Select(instanceId => instances[instanceId]);
}
public void TestCompareTo_Version()
{
var a = new Capability("capA", new Version("1.0"));
var b = new Capability("capA", new Version("1.1"));
Assert.IsTrue(a.CompareTo(b) < 0);
Assert.IsTrue(b.CompareTo(a) > 0);
}
public void TestCompareTo_Equal()
{
var a = new Capability("capA", new Version("1.0"));
var b = new Capability("capA", new Version("1.0"));
Assert.IsTrue(a.CompareTo(b) == 0);
Assert.IsTrue(a.Equals(b));
}
public void TestCompareTo_Sort()
{
var a = new Capability("capA", new Version("1.0"));
var b = new Capability("capB", new Version("1.0"));
var c = new Capability("capB", new Version("1.1"));
var list = new List<Capability>() { c, b, a };
list.Sort();
Assert.AreSame(a, list[0]);
Assert.AreSame(b, list[1]);
Assert.AreSame(c, list[2]);
}
/// <summary>
/// Copy all information from the manifest into the new app instance
/// and add it to the registry
/// </summary>
/// <param name="registry">the registry being visited</param>
public override void VisitRegistry(Registry registry)
{
// Drop the connection if the instance ID is a duplicate
if (registry.HasInstance(manifest.InstanceId))
{
failure = new ManifestFail("Instance ID " + manifest.InstanceId + " already in use", instance);
return;
}
if (manifest.InstanceId != null)
{
instance.InstanceId = manifest.InstanceId;
}
instance.Name = manifest.Name;
instance.Version = new Version(manifest.Version);
instance.ApiVersion = (uint) manifest.API;
instance.Description = manifest.Description;
instance.DisplayName = manifest.DisplayName;
foreach (string capability in manifest.Capabilities.Keys)
{
var c = new Capability(
capability,
new Version(manifest.Capabilities[capability])
);
instance.AddCapability(c);
}
foreach (string capability in manifest.Dependencies.Keys)
{
var c = new Capability(
capability,
new Version(manifest.Dependencies[capability])
);
instance.AddDependency(c);
}
registry.Register(instance);
// We have to send the message to the instance on our own
instance.AppStatus = Status.down;
instance.Send("APP_MANIFEST_OK " + okMsg.Serialize());
Log.Info(instance.DisplayName + " created with instance ID " + instance.InstanceId);
}
/// <summary>
/// Returns all instances that depend on or provide a capability
/// </summary>
/// <param name="capability"></param>
/// <returns></returns>
public IEnumerable<AppInstance> GetAllRelated(Capability capability)
{
var all = dependents[capability];
all.UnionWith(providers[capability]);
return all.Select(instanceId => instances[instanceId]);
}