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Incident report
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Resolution: Fixed
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Critical
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2.2.15rc1, 3.0.5rc1, 3.2.1rc1, 3.4.0alpha1
This function was completely broken in ZBXNEXT-300 (or has never been working correctly):
- if it was asked to remove the first parameter it copies the first character of the second without checking whether it is double quote or not;
- inside quoted parameters it skips '\' preceding double quote.
As a result, calculated item
count(dummy.echo[{$ECHO}],10m,"{$MACRO:\"with , and } characters\"}")
was simply counting values ignoring pattern.
Debug log wasn't very helpful:
4807:20160914:142725.827 In get_value_calculated() key:'dummy.echo.count' expression:'count(dummy.echo[{$ECHO}],10m,"{$MACRO:\"with , and } characters\"}")'
4807:20160914:142725.828 In calcitem_parse_expression() expression:'count(dummy.echo[{$ECHO}],10m,"{$MACRO:\"with , and } characters\"}")'
4807:20160914:142725.828 calcitem_parse_expression() functionid:1 function:'count(dummy.echo[{$ECHO}],10m,"{$MACRO:\"with , and } characters\"}")'
4807:20160914:142725.828 calcitem_parse_expression() expression:'{1}'
4807:20160914:142725.828 In substitute_simple_macros() data:'{1}'
4807:20160914:142725.828 End substitute_simple_macros() data:'{1}'
4807:20160914:142725.828 End of calcitem_parse_expression():SUCCEED
4807:20160914:142725.828 In calcitem_evaluate_expression()
4807:20160914:142725.828 calcitem_evaluate_expression() function:'lld macro test:dummy.echo[{$ECHO}].count(10m,"{$MACRO:"with , and } characters"}")'
4807:20160914:142725.828 In evaluate_function() function:'lld macro test:dummy.echo[{$ECHO}].count(10m,"{$MACRO:"with , and } characters"}")'
4807:20160914:142725.828 In evaluate_COUNT()
4807:20160914:142725.829 In __get_function_parameter_uint31() parameters:'10m,"{$MACRO:"with , and } characters"}"' Nparam:1
4807:20160914:142725.829 In substitute_simple_macros() data:'10m'
4807:20160914:142725.829 __get_function_parameter_uint31() flag:0 value:600
4807:20160914:142725.829 End of __get_function_parameter_uint31():SUCCEED
4807:20160914:142725.829 In zbx_vc_get_value_range() itemid:23934 value_type:4 seconds:600 count:0 timestamp:1473852445
4807:20160914:142725.829 End of zbx_vc_get_value_range():SUCCEED count:20 cached:1
4807:20160914:142725.829 End of evaluate_COUNT():SUCCEED
4807:20160914:142725.829 End of evaluate_function():SUCCEED value:'20'
4807:20160914:142725.829 End of calcitem_evaluate_expression():SUCCEED
4807:20160914:142725.829 In evaluate() expression:'20'
4807:20160914:142725.829 End of evaluate() value:20.000000
4807:20160914:142725.829 get_value_calculated() value:20.000000
4807:20160914:142725.829 End of get_value_calculated():SUCCEED