1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
// **********************************************************************
//
// Copyright (c) 2003-2014 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.
//
// **********************************************************************
package IceMX;
public class MetricsHelper<T>
{
public static class AttributeResolver
{
private abstract class Resolver
{
abstract Object resolve(Object obj) throws Exception;
String resolveImpl(Object obj)
{
try
{
Object result = resolve(obj);
if(result != null)
{
return result.toString();
}
return "";
}
catch(IllegalArgumentException ex)
{
throw ex;
}
catch(Exception ex)
{
ex.printStackTrace();
assert(false);
return null;
}
}
}
protected
AttributeResolver()
{
}
public String
resolve(MetricsHelper<?> helper, String attribute)
{
Resolver resolver = _attributes.get(attribute);
if(resolver == null)
{
if(attribute.equals("none"))
{
return "";
}
String v = helper.defaultResolve(attribute);
if(v != null)
{
return v;
}
throw new IllegalArgumentException(attribute);
}
return resolver.resolveImpl(helper);
}
public void
add(String name, final java.lang.reflect.Method method)
{
_attributes.put(name, new Resolver()
{
@Override
public Object
resolve(Object obj) throws Exception
{
return method.invoke(obj);
}
});
}
public void
add(String name, final java.lang.reflect.Field field)
{
_attributes.put(name, new Resolver()
{
@Override
public Object
resolve(Object obj) throws Exception
{
return field.get(obj);
}
});
}
public void
add(final String name, final java.lang.reflect.Method method, final java.lang.reflect.Field field)
{
_attributes.put(name, new Resolver()
{
@Override
public Object
resolve(Object obj) throws Exception
{
Object o = method.invoke(obj);
if(o != null)
{
return field.get(o);
}
throw new IllegalArgumentException(name);
}
});
}
public void
add(final String name, final java.lang.reflect.Method method, final java.lang.reflect.Method subMethod)
{
_attributes.put(name, new Resolver()
{
@Override
public Object
resolve(Object obj) throws Exception
{
Object o = method.invoke(obj);
if(o != null)
{
return subMethod.invoke(o);
}
throw new IllegalArgumentException(name);
}
});
}
private java.util.Map<String, Resolver> _attributes = new java.util.HashMap<String, Resolver>();
};
protected
MetricsHelper(AttributeResolver attributes)
{
_attributes = attributes;
}
public String
resolve(String attribute)
{
return _attributes.resolve(this, attribute);
}
public void
initMetrics(T metrics)
{
// Override in specialized helpers.
}
protected String
defaultResolve(String attribute)
{
return null;
}
private AttributeResolver _attributes;
};
|
