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
|
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "icinga/dependency.hpp"
#include "icinga/service.hpp"
#include "config/configitembuilder.hpp"
#include "config/applyrule.hpp"
#include "base/initialize.hpp"
#include "base/configtype.hpp"
#include "base/logger.hpp"
#include "base/context.hpp"
#include "base/workqueue.hpp"
#include "base/exception.hpp"
using namespace icinga;
INITIALIZE_ONCE([]() {
ApplyRule::RegisterType("Dependency", { "Host", "Service" });
});
bool Dependency::EvaluateApplyRuleInstance(const Checkable::Ptr& checkable, const String& name, ScriptFrame& frame, const ApplyRule& rule, bool skipFilter)
{
if (!skipFilter && !rule.EvaluateFilter(frame))
return false;
auto& di (rule.GetDebugInfo());
#ifdef _DEBUG
Log(LogDebug, "Dependency")
<< "Applying dependency '" << name << "' to object '" << checkable->GetName() << "' for rule " << di;
#endif /* _DEBUG */
ConfigItemBuilder builder{di};
builder.SetType(Dependency::TypeInstance);
builder.SetName(name);
builder.SetScope(frame.Locals->ShallowClone());
builder.SetIgnoreOnError(rule.GetIgnoreOnError());
builder.AddExpression(new ImportDefaultTemplatesExpression());
Host::Ptr host;
Service::Ptr service;
tie(host, service) = GetHostService(checkable);
builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "parent_host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "child_host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
if (service)
builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "child_service_name"), OpSetLiteral, MakeLiteral(service->GetShortName()), di));
String zone = checkable->GetZoneName();
if (!zone.IsEmpty())
builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "zone"), OpSetLiteral, MakeLiteral(zone), di));
builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "package"), OpSetLiteral, MakeLiteral(rule.GetPackage()), di));
builder.AddExpression(new OwnedExpression(rule.GetExpression()));
ConfigItem::Ptr dependencyItem = builder.Compile();
dependencyItem->Register();
return true;
}
bool Dependency::EvaluateApplyRule(const Checkable::Ptr& checkable, const ApplyRule& rule, bool skipFilter)
{
auto& di (rule.GetDebugInfo());
CONTEXT("Evaluating 'apply' rule (" << di << ")");
Host::Ptr host;
Service::Ptr service;
tie(host, service) = GetHostService(checkable);
ScriptFrame frame(true);
if (rule.GetScope())
rule.GetScope()->CopyTo(frame.Locals);
frame.Locals->Set("host", host);
if (service)
frame.Locals->Set("service", service);
Value vinstances;
if (rule.GetFTerm()) {
try {
vinstances = rule.GetFTerm()->Evaluate(frame);
} catch (const std::exception&) {
/* Silently ignore errors here and assume there are no instances. */
return false;
}
} else {
vinstances = new Array({ "" });
}
bool match = false;
if (vinstances.IsObjectType<Array>()) {
if (!rule.GetFVVar().IsEmpty())
BOOST_THROW_EXCEPTION(ScriptError("Dictionary iterator requires value to be a dictionary.", di));
Array::Ptr arr = vinstances;
ObjectLock olock(arr);
for (const Value& instance : arr) {
String name = rule.GetName();
if (!rule.GetFKVar().IsEmpty()) {
frame.Locals->Set(rule.GetFKVar(), instance);
name += instance;
}
if (EvaluateApplyRuleInstance(checkable, name, frame, rule, skipFilter))
match = true;
}
} else if (vinstances.IsObjectType<Dictionary>()) {
if (rule.GetFVVar().IsEmpty())
BOOST_THROW_EXCEPTION(ScriptError("Array iterator requires value to be an array.", di));
Dictionary::Ptr dict = vinstances;
for (const String& key : dict->GetKeys()) {
frame.Locals->Set(rule.GetFKVar(), key);
frame.Locals->Set(rule.GetFVVar(), dict->Get(key));
if (EvaluateApplyRuleInstance(checkable, rule.GetName() + key, frame, rule, skipFilter))
match = true;
}
}
return match;
}
void Dependency::EvaluateApplyRules(const Host::Ptr& host)
{
CONTEXT("Evaluating 'apply' rules for host '" << host->GetName() << "'");
for (auto& rule : ApplyRule::GetRules(Dependency::TypeInstance, Host::TypeInstance)) {
if (EvaluateApplyRule(host, *rule))
rule->AddMatch();
}
for (auto& rule : ApplyRule::GetTargetedHostRules(Dependency::TypeInstance, host->GetName())) {
if (EvaluateApplyRule(host, *rule, true))
rule->AddMatch();
}
}
void Dependency::EvaluateApplyRules(const Service::Ptr& service)
{
CONTEXT("Evaluating 'apply' rules for service '" << service->GetName() << "'");
for (auto& rule : ApplyRule::GetRules(Dependency::TypeInstance, Service::TypeInstance)) {
if (EvaluateApplyRule(service, *rule))
rule->AddMatch();
}
for (auto& rule : ApplyRule::GetTargetedServiceRules(Dependency::TypeInstance, service->GetHost()->GetName(), service->GetShortName())) {
if (EvaluateApplyRule(service, *rule, true))
rule->AddMatch();
}
}
|
