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91fcc471 TJ |
1 | /* |
2 | The software in this package is distributed under the GNU General | |
3 | Public License version 2 (with a special exception described below). | |
4 | ||
5 | A copy of GNU General Public License (GPL) is included in this distribution, | |
6 | in the file COPYING.GPL. | |
7 | ||
8 | As a special exception, if other files instantiate templates or use macros | |
9 | or inline functions from this file, or you compile this file and link it | |
10 | with other works to produce a work based on this file, this file | |
11 | does not by itself cause the resulting work to be covered | |
12 | by the GNU General Public License. | |
13 | ||
14 | However the source code for this file must still be made available | |
15 | in accordance with section (3) of the GNU General Public License. | |
16 | ||
17 | This exception does not invalidate any other reasons why a work based | |
18 | on this file might be covered by the GNU General Public License. | |
19 | */ | |
6c14bbee | 20 | #include "host/hoststatus.h" |
ddf41c89 GMF |
21 | |
22 | #include <iostream> | |
3f7c921f | 23 | #include <logfunc.hpp> |
ddf41c89 | 24 | |
780b0bca | 25 | #include "boost_assert_handler.h" |
ddf41c89 GMF |
26 | |
27 | using namespace std; | |
3f7c921f | 28 | using I2n::Logger::GlobalLogger; |
ddf41c89 GMF |
29 | |
30 | //----------------------------------------------------------------------------- | |
6c14bbee | 31 | // HostStatus |
ddf41c89 GMF |
32 | //----------------------------------------------------------------------------- |
33 | ||
c01a6023 | 34 | /** |
6c14bbee GMF |
35 | * @param host_address The address of the host it has to analyze. |
36 | * @param ping_fail_percentage_limit The percentage threshold of pings that can | |
c01a6023 | 37 | * fail. |
6c14bbee | 38 | * @param link_analyzer The object used to notify the status of the host. |
c01a6023 | 39 | */ |
6c14bbee | 40 | HostStatus::HostStatus( |
ddf41c89 | 41 | const string &host_address, |
cd4048df | 42 | const int ping_fail_limit_percentage, |
c6c54dfb | 43 | const LinkStatusItem link_analyzer |
ddf41c89 | 44 | ) : |
c1fff16a | 45 | HostAddress( host_address ), |
fb469ffa | 46 | LinkAnalyzer( link_analyzer ), |
cd4048df | 47 | PingFailLimitPercentage( ping_fail_limit_percentage ), |
ddf41c89 GMF |
48 | ResolvedIpCount( 0 ), |
49 | PingsPerformedCount( 0 ), | |
d8a91bd6 | 50 | PingsFailedCount( 0 ), |
a341119a | 51 | ExceededPingFailedLimit( false ) |
ddf41c89 | 52 | { |
d4793cc9 | 53 | BOOST_ASSERT( !HostAddress.empty() ); |
cd4048df | 54 | BOOST_ASSERT( ( 0 <= PingFailLimitPercentage ) && ( PingFailLimitPercentage <= 100 ) ); |
ddf41c89 GMF |
55 | } |
56 | ||
6c14bbee | 57 | HostStatus::~HostStatus() |
ddf41c89 GMF |
58 | { |
59 | } | |
60 | ||
c01a6023 | 61 | /** |
6c14bbee | 62 | * @param resolved_ip_count The number of IPs resolved for the host. |
c01a6023 | 63 | */ |
6c14bbee | 64 | void HostStatus::set_resolved_ip_count( const int resolved_ip_count ) |
ddf41c89 GMF |
65 | { |
66 | BOOST_ASSERT( 1 <= resolved_ip_count ); | |
67 | ||
db625177 CH |
68 | if (resolved_ip_count != ResolvedIpCount) |
69 | { // assume that the target has changed --> reset counters | |
70 | reset_ping_counters(); | |
71 | } | |
ddf41c89 | 72 | ResolvedIpCount = resolved_ip_count; |
3f7c921f | 73 | |
03c2a2c3 | 74 | GlobalLogger.debug() << "Stat(" << HostAddress << "): " |
3f7c921f CH |
75 | << PingsFailedCount << " fail/" << PingsPerformedCount << " pings/" |
76 | << ResolvedIpCount << " IPs: #IPs set"; | |
ddf41c89 GMF |
77 | } |
78 | ||
c01a6023 GMF |
79 | /** |
80 | * @return true if the amount of failed pings given to the host exceeded the | |
81 | * limit. | |
82 | */ | |
6c14bbee | 83 | bool HostStatus::exceeded_ping_failed_limit() const |
d8a91bd6 | 84 | { |
a341119a | 85 | return ExceededPingFailedLimit; |
d8a91bd6 GMF |
86 | } |
87 | ||
c01a6023 GMF |
88 | /** |
89 | * Adds a ping status (success or failure). | |
90 | * @param ping_success | |
91 | */ | |
6c14bbee | 92 | void HostStatus::update_ping_statistics( bool ping_success ) |
ddf41c89 | 93 | { |
03c2a2c3 | 94 | GlobalLogger.debug() << "Stat(" << HostAddress << "): " |
3f7c921f CH |
95 | << PingsFailedCount << " fail/" << PingsPerformedCount << " pings/" |
96 | << ResolvedIpCount << " IPs: add ping with success=" << ping_success; | |
97 | ||
ddf41c89 GMF |
98 | BOOST_ASSERT( 1 <= ResolvedIpCount ); |
99 | BOOST_ASSERT( 0 <= PingsPerformedCount ); | |
100 | BOOST_ASSERT( PingsFailedCount <= PingsPerformedCount ); | |
101 | ||
c5e4bfa1 | 102 | increase_ping_performed_count(); |
ddf41c89 GMF |
103 | |
104 | if ( !ping_success ) | |
105 | { | |
c5e4bfa1 | 106 | increase_ping_failed_count(); |
ddf41c89 GMF |
107 | } |
108 | ||
2c10f87b GMF |
109 | analyze_ping_failed_count(); |
110 | ||
c5e4bfa1 GMF |
111 | // after we tried all IPs resolved for this host, we can analyze how many |
112 | // failed | |
113 | if ( tried_all_resolved_ip() ) | |
ddf41c89 | 114 | { |
d8a91bd6 | 115 | analyze_ping_statistics(); |
ddf41c89 | 116 | |
c5e4bfa1 | 117 | reset_ping_counters(); |
ddf41c89 GMF |
118 | } |
119 | ||
120 | BOOST_ASSERT( PingsFailedCount <= PingsPerformedCount ); | |
121 | } | |
122 | ||
c1d776ba | 123 | |
6c14bbee | 124 | bool HostStatus::tried_all_resolved_ip() const |
d8a91bd6 | 125 | { |
2c10f87b | 126 | BOOST_ASSERT( ( 0 < PingsPerformedCount ) && ( PingsPerformedCount <= ResolvedIpCount ) ); |
d4793cc9 GMF |
127 | |
128 | return ( PingsPerformedCount == ResolvedIpCount ); | |
d8a91bd6 GMF |
129 | } |
130 | ||
6c14bbee | 131 | void HostStatus::analyze_ping_statistics() |
ddf41c89 | 132 | { |
c1fff16a | 133 | BOOST_ASSERT( !HostAddress.empty() ); |
d4793cc9 | 134 | BOOST_ASSERT( PingsPerformedCount == ResolvedIpCount ); |
ddf41c89 | 135 | |
c1fff16a | 136 | // notify if the amount of pings that failed exceed the limit |
a341119a | 137 | if ( exceeded_ping_failed_limit() ) |
ddf41c89 | 138 | { |
03c2a2c3 | 139 | GlobalLogger.debug() << "Stat(" << HostAddress << "): " |
3f7c921f CH |
140 | << PingsFailedCount << " fail/" << PingsPerformedCount << " pings/" |
141 | << ResolvedIpCount << " IPs: notify down"; | |
fb469ffa | 142 | LinkAnalyzer->notify_host_down( HostAddress ); |
ddf41c89 GMF |
143 | } |
144 | else | |
145 | { | |
03c2a2c3 | 146 | GlobalLogger.debug() << "Stat(" << HostAddress << "): " |
3f7c921f CH |
147 | << PingsFailedCount << " fail/" << PingsPerformedCount << " pings/" |
148 | << ResolvedIpCount << " IPs: notify up"; | |
fb469ffa | 149 | LinkAnalyzer->notify_host_up( HostAddress ); |
ddf41c89 | 150 | } |
6fd0993e | 151 | } //lint !e1762 |
ddf41c89 | 152 | |
6c14bbee | 153 | void HostStatus::reset_ping_counters() |
c1fff16a GMF |
154 | { |
155 | PingsPerformedCount = 0; | |
156 | PingsFailedCount = 0; | |
157 | } | |
158 | ||
6c14bbee | 159 | void HostStatus::increase_ping_performed_count() |
c5e4bfa1 GMF |
160 | { |
161 | ++PingsPerformedCount; | |
c1fff16a | 162 | |
3f7c921f | 163 | BOOST_ASSERT( ( 0 < PingsPerformedCount ) && ( PingsPerformedCount <= ResolvedIpCount ) ); |
c5e4bfa1 GMF |
164 | } |
165 | ||
6c14bbee | 166 | void HostStatus::increase_ping_failed_count() |
c5e4bfa1 GMF |
167 | { |
168 | ++PingsFailedCount; | |
c1fff16a GMF |
169 | |
170 | BOOST_ASSERT( ( 0 <= PingsFailedCount ) && ( PingsFailedCount <= PingsPerformedCount ) ); | |
c5e4bfa1 GMF |
171 | } |
172 | ||
6c14bbee | 173 | void HostStatus::analyze_ping_failed_count() |
ddf41c89 | 174 | { |
cd4048df | 175 | BOOST_ASSERT( ( 0 <= PingFailLimitPercentage ) && ( PingFailLimitPercentage <= 100 ) ); |
c1fff16a GMF |
176 | BOOST_ASSERT( ( 0 <= PingsFailedCount ) && ( PingsFailedCount <= PingsPerformedCount ) ); |
177 | ||
cd4048df | 178 | int ping_fail_limit_count = ( ResolvedIpCount * PingFailLimitPercentage ) / 100; |
c1fff16a | 179 | |
6827496c | 180 | // keep a boolean variable because the PingsFailedCount can be reseted |
cd4048df | 181 | if ( PingsFailedCount > ping_fail_limit_count ) |
1d7d7cb2 GMF |
182 | { |
183 | ExceededPingFailedLimit = true; | |
3f7c921f | 184 | |
03c2a2c3 | 185 | GlobalLogger.debug() << "Stat(" << HostAddress << "): " |
3f7c921f CH |
186 | << PingsFailedCount << " fail/" << PingsPerformedCount << " pings/" |
187 | << ResolvedIpCount << " IPs: exceed limit=" << ping_fail_limit_count; | |
1d7d7cb2 GMF |
188 | } |
189 | else | |
190 | { | |
191 | ExceededPingFailedLimit = false; | |
3f7c921f | 192 | |
03c2a2c3 | 193 | GlobalLogger.debug() << "Stat(" << HostAddress << "): " |
3f7c921f CH |
194 | << PingsFailedCount << " fail/" << PingsPerformedCount << " pings/" |
195 | << ResolvedIpCount << " IPs: below limit=" << ping_fail_limit_count; | |
1d7d7cb2 | 196 | } |
c5e4bfa1 | 197 | } |