77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
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// The matches package contains the implementation of the `check_output_matches`
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// plugin, which can be used to run an arbitrary command and check its output
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// against various patterns. It can also be configured to do the same on an
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// arbitrary file.
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package matches // import nocternity.net/gomonop/cmd/matches
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import (
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"regexp"
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"nocternity.net/gomonop/pkg/plugin"
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"nocternity.net/gomonop/pkg/results"
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"nocternity.net/gomonop/pkg/status"
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)
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// Program data for the string matches plugin.
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type matchesPlugin struct {
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pluginFlags // Flags from the command line
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results *results.Results // Plugin output state
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counters []int // Counters for each match
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unmatchedLines int // Number of lines that didn't match anything
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}
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// Initialise the plugin.
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func NewPlugin() plugin.Plugin {
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pluginInst := &matchesPlugin{
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results: results.New("String matches counter"),
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}
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pluginInst.parseArguments()
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return pluginInst
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}
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// Return the program's output value.
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func (pluginInst *matchesPlugin) Results() *results.Results {
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return pluginInst.results
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}
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// Check the values that were specified from the command line. Returns true
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// if the arguments made sense.
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func (pluginInst *matchesPlugin) CheckArguments() bool {
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if pluginInst.dataSource == "" {
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pluginInst.results.SetState(status.StatusUnknown, "no data source specified")
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return false
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}
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if !pluginInst.strict && len(pluginInst.matches) == 0 {
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pluginInst.results.SetState(status.StatusUnknown, "would match anything")
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return false
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}
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for index := range pluginInst.matches {
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if pluginInst.matches[index].matchString == "" {
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pluginInst.results.SetState(status.StatusUnknown, "empty match string")
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pluginInst.results.AddLinef("(At match %d)", index+1)
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return false
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}
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if pluginInst.matches[index].isRegexp {
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rexp, err := regexp.Compile(pluginInst.matches[index].matchString)
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if err != nil {
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pluginInst.results.SetState(status.StatusUnknown, "Invalid regular expression")
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pluginInst.results.AddLine(err.Error())
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pluginInst.results.AddLinef("(At match %d)", index+1)
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return false
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}
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pluginInst.matches[index].compiledRe = rexp
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}
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}
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return true
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}
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// Run the check.
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func (pluginInst *matchesPlugin) RunCheck() {
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pluginInst.counters = make([]int, len(pluginInst.matches))
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err := pluginInst.processData()
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pluginInst.checkResults(err)
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}
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