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// **********************************************************************
//
// Copyright (c) 2003-2015 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
using System.Collections.Generic;
namespace Ice
{
public interface PropertiesAdminUpdateCallback
{
void updated(Dictionary<string, string> changes);
}
public interface NativePropertiesAdmin
{
void addUpdateCallback(PropertiesAdminUpdateCallback callback);
void removeUpdateCallback(PropertiesAdminUpdateCallback callback);
}
}
namespace IceInternal
{
sealed class PropertiesAdminI : Ice.PropertiesAdminDisp_, Ice.NativePropertiesAdmin
{
internal PropertiesAdminI(Ice.Properties properties, Ice.Logger logger)
{
_properties = properties;
_logger = logger;
}
public override string
getProperty(string name, Ice.Current current)
{
return _properties.getProperty(name);
}
public override Dictionary<string, string>
getPropertiesForPrefix(string name, Ice.Current current)
{
return _properties.getPropertiesForPrefix(name);
}
public override void setProperties_async(Ice.AMD_PropertiesAdmin_setProperties cb,
Dictionary<string, string> props,
Ice.Current current)
{
lock(this)
{
Dictionary<string, string> old = _properties.getPropertiesForPrefix("");
int traceLevel = _properties.getPropertyAsInt("Ice.Trace.Admin.Properties");
//
// Compute the difference between the new property set and the existing property set:
//
// 1) Any properties in the new set that were not defined in the existing set.
//
// 2) Any properties that appear in both sets but with different values.
//
// 3) Any properties not present in the new set but present in the existing set.
// In other words, the property has been removed.
//
Dictionary<string, string> added = new Dictionary<string, string>();
Dictionary<string, string> changed = new Dictionary<string, string>();
Dictionary<string, string> removed = new Dictionary<string, string>();
foreach(KeyValuePair<string, string> e in props)
{
string key = e.Key;
string value = e.Value;
if(!old.ContainsKey(key))
{
if(value.Length > 0)
{
//
// This property is new.
//
added.Add(key, value);
}
}
else
{
string v;
if(!old.TryGetValue(key, out v) || !value.Equals(v))
{
if(value.Length == 0)
{
//
// This property was removed.
//
removed.Add(key, value);
}
else
{
//
// This property has changed.
//
changed.Add(key, value);
}
}
old.Remove(key);
}
}
if(traceLevel > 0 && (added.Count > 0 || changed.Count > 0 || removed.Count > 0))
{
System.Text.StringBuilder message = new System.Text.StringBuilder("Summary of property changes");
if(added.Count > 0)
{
message.Append("\nNew properties:");
foreach(KeyValuePair<string, string> e in added)
{
message.Append("\n ");
message.Append(e.Key);
if(traceLevel > 1)
{
message.Append(" = ");
message.Append(e.Value);
}
}
}
if(changed.Count > 0)
{
message.Append("\nChanged properties:");
foreach(KeyValuePair<string, string> e in changed)
{
message.Append("\n ");
message.Append(e.Key);
if(traceLevel > 1)
{
message.Append(" = ");
message.Append(e.Value);
message.Append(" (old value = ");
message.Append(_properties.getProperty(e.Key));
message.Append(")");
}
}
}
if(removed.Count > 0)
{
message.Append("\nRemoved properties:");
foreach(KeyValuePair<string, string> e in removed)
{
message.Append("\n ");
message.Append(e.Key);
}
}
_logger.trace(_traceCategory, message.ToString());
}
//
// Update the property set.
//
foreach(KeyValuePair<string, string> e in added)
{
_properties.setProperty(e.Key, e.Value);
}
foreach(KeyValuePair<string, string> e in changed)
{
_properties.setProperty(e.Key, e.Value);
}
foreach(KeyValuePair<string, string> e in removed)
{
_properties.setProperty(e.Key, "");
}
//
// Send the response now so that we do not block the client during the call to the update callback.
//
cb.ice_response();
if(_updateCallbacks.Count > 0)
{
//
// Copy the callbacks to allow callbacks to update the callbacks.
//
List<Ice.PropertiesAdminUpdateCallback> callbacks =
new List<Ice.PropertiesAdminUpdateCallback>(_updateCallbacks);
Dictionary<string, string> changes = new Dictionary<string, string>(added);
foreach(KeyValuePair<string, string> e in changed)
{
changes.Add(e.Key, e.Value);
}
foreach(KeyValuePair<string, string> e in removed)
{
changes.Add(e.Key, e.Value);
}
foreach(Ice.PropertiesAdminUpdateCallback callback in callbacks)
{
try
{
callback.updated(changes);
}
catch(System.Exception)
{
// Ignore.
}
}
}
}
}
public void addUpdateCallback(Ice.PropertiesAdminUpdateCallback cb)
{
lock(this)
{
_updateCallbacks.Add(cb);
}
}
public void removeUpdateCallback(Ice.PropertiesAdminUpdateCallback cb)
{
lock(this)
{
_updateCallbacks.Remove(cb);
}
}
private readonly Ice.Properties _properties;
private readonly Ice.Logger _logger;
private List<Ice.PropertiesAdminUpdateCallback> _updateCallbacks = new List<Ice.PropertiesAdminUpdateCallback>();
private static readonly string _traceCategory = "Admin.Properties";
}
}
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