protect against emtpy wmi query result sets

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If an WMI query were to return an empty result set, trying to access the
first element in the result set would result in a `panic: runtime error:
index out of range` error.

add logic to explicitly check if the result set size is 0 and return an
error rather.

Fixes https://github.com/martinlindhe/wmi_exporter/issues/240

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This commit is contained in:

Steve Zook

2018-08-07 15:42:16 -04:00

parent 832771b4a2

commit c156f2bcbe

9 changed files with 1110 additions and 1060 deletions

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collector/mssql.go

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