Documentation
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Index ¶
- type Devops
- func (d *Devops) GenerateEmptyQuery() query.Query
- func (d *Devops) GroupByOrderByLimit(qi query.Query)
- func (d *Devops) GroupByTime(qi query.Query, nHosts, numMetrics int, timeRange time.Duration)
- func (d *Devops) GroupByTimeAndPrimaryTag(qi query.Query, numMetrics int)
- func (d *Devops) HighCPUForHosts(qi query.Query, nHosts int)
- func (d *Devops) LastPointPerHost(qi query.Query)
- func (d *Devops) MaxAllCPU(qi query.Query, nHosts int)
- type NaiveDevops
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Devops ¶
Devops produces Mongo-specific queries for the devops use case.
func (*Devops) GenerateEmptyQuery ¶
GenerateEmptyQuery returns an empty query.Mongo
func (*Devops) GroupByOrderByLimit ¶
GroupByOrderByLimit populates a query.Query that has a time WHERE clause, that groups by a truncated date, orders by that date, and takes a limit: SELECT date_trunc('minute', time) AS t, MAX(cpu) FROM cpu WHERE time < '$TIME' GROUP BY t ORDER BY t DESC LIMIT $LIMIT
func (*Devops) GroupByTime ¶
GroupByTime selects the MAX for numMetrics metrics under 'cpu', per minute for nhosts hosts, e.g. in psuedo-SQL:
SELECT minute, max(metric1), ..., max(metricN) FROM cpu WHERE (hostname = '$HOSTNAME_1' OR ... OR hostname = '$HOSTNAME_N') AND time >= '$HOUR_START' AND time < '$HOUR_END' GROUP BY minute ORDER BY minute ASC
func (*Devops) GroupByTimeAndPrimaryTag ¶
GroupByTimeAndPrimaryTag selects the AVG of numMetrics metrics under 'cpu' per device per hour for a day, e.g. in psuedo-SQL:
SELECT AVG(metric1), ..., AVG(metricN) FROM cpu WHERE time >= '$HOUR_START' AND time < '$HOUR_END' GROUP BY hour, hostname ORDER BY hour, hostname
func (*Devops) HighCPUForHosts ¶
HighCPUForHosts populates a query that gets CPU metrics when the CPU has high usage between a time period for a number of hosts (if 0, it will search all hosts), e.g. in psuedo-SQL:
SELECT * FROM cpu WHERE usage_user > 90.0 AND time >= '$TIME_START' AND time < '$TIME_END' AND (hostname = '$HOST' OR hostname = '$HOST2'...)
func (*Devops) LastPointPerHost ¶
LastPointPerHost finds the last row for every host in the dataset
func (*Devops) MaxAllCPU ¶
MaxAllCPU selects the MAX of all metrics under 'cpu' per hour for nhosts hosts, e.g. in psuedo-SQL:
SELECT MAX(metric1), ..., MAX(metricN) FROM cpu WHERE (hostname = '$HOSTNAME_1' OR ... OR hostname = '$HOSTNAME_N') AND time >= '$HOUR_START' AND time < '$HOUR_END' GROUP BY hour ORDER BY hour
type NaiveDevops ¶
NaiveDevops produces Mongo-specific queries for the devops use case.
func NewNaiveDevops ¶
func NewNaiveDevops(start, end time.Time, scale int) *NaiveDevops
NewNaiveDevops makes an NaiveDevops object ready to generate Queries.
func (*NaiveDevops) GenerateEmptyQuery ¶
func (d *NaiveDevops) GenerateEmptyQuery() query.Query
GenerateEmptyQuery returns an empty query.Mongo
func (*NaiveDevops) GroupByTime ¶
GroupByTime selects the MAX for numMetrics metrics under 'cpu', per minute for nhosts hosts, e.g. in psuedo-SQL:
SELECT minute, max(metric1), ..., max(metricN) FROM cpu WHERE (hostname = '$HOSTNAME_1' OR ... OR hostname = '$HOSTNAME_N') AND time >= '$HOUR_START' AND time < '$HOUR_END' GROUP BY minute ORDER BY minute ASC
func (*NaiveDevops) GroupByTimeAndPrimaryTag ¶
func (d *NaiveDevops) GroupByTimeAndPrimaryTag(qi query.Query, numMetrics int)
GroupByTimeAndPrimaryTag selects the AVG of numMetrics metrics under 'cpu' per device per hour for a day, e.g. in psuedo-SQL:
SELECT AVG(metric1), ..., AVG(metricN) FROM cpu WHERE time >= '$HOUR_START' AND time < '$HOUR_END' GROUP BY hour, hostname ORDER BY hour, hostname
Source Files