// buildStatsQuery constructs a SQL query to compute comprehensive job statistics with optional grouping.
// buildStatsQuery constructs a SQL query to compute job statistics with optional grouping.
// Only requested columns are computed; unrequested columns select 0 as placeholder.
//
// Parameters:
// - filter: Job filters to apply (cluster, user, time range, etc.)
// - col: Column name to GROUP BY; empty string for overall statistics without grouping
// - shortThreshold: Duration threshold in seconds for counting short-running jobs
//
// Returns a SelectBuilder that produces comprehensive statistics:
// - totalJobs: Count of jobs
// - totalUsers: Count of distinct users (always 0 when grouping by user)
// - totalWalltime: Sum of job durations in hours
// - totalNodes: Sum of nodes used across all jobs
// - totalNodeHours: Sum of (duration × num_nodes) in hours
// - totalCores: Sum of hardware threads used across all jobs
// - totalCoreHours: Sum of (duration × num_hwthreads) in hours
// - totalAccs: Sum of accelerators used across all jobs
// - totalAccHours: Sum of (duration × num_acc) in hours
// - runningJobs: Count of jobs with job_state = 'running'
// - shortJobs: Count of jobs with duration < shortThreshold
//
// Special handling:
// - Running jobs: Duration calculated as (now - start_time) instead of stored duration
// - Grouped by user: Also joins hpc_user table to select display name
// - Grouped by other dimensions: Selects empty string for name column (no join)
// - All time values converted from seconds to hours (÷ 3600) and rounded
// - reqFields: Set of requested field names; nil means compute all fields
func(r*JobRepository)buildStatsQuery(
filter[]*model.JobFilter,
colstring,
shortThresholdint,
reqFieldsmap[string]bool,
)sq.SelectBuilder{
now:=time.Now().Unix()
varquerysq.SelectBuilder
// Helper: return real expression if field is requested (or reqFields is nil), else "0 as alias"
need:=func(fieldstring)bool{
returnreqFields==nil||reqFields[field]
}
durationExpr:=fmt.Sprintf(`(CASE WHEN job.job_state = 'running' THEN %d - job.start_time ELSE job.duration END)`,now)
// Build column list
columns:=make([]string,0,14)
ifcol!=""{
ifcol=="job.hpc_user"{
query=sq.Select(
col,
"name",
"COUNT(job.id) as totalJobs",
"COUNT(DISTINCT job.hpc_user) AS totalUsers",
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END)) / 3600) as int) as totalWalltime`,now),
`CAST(SUM(job.num_nodes) as int) as totalNodes`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_nodes) / 3600) as int) as totalNodeHours`,now),
`CAST(SUM(job.num_hwthreads) as int) as totalCores`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_hwthreads) / 3600) as int) as totalCoreHours`,now),
`CAST(SUM(job.num_acc) as int) as totalAccs`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_acc) / 3600) as int) as totalAccHours`,now),
`COUNT(CASE WHEN job.job_state = 'running' THEN 1 END) as runningJobs`,
fmt.Sprintf(`COUNT(CASE WHEN job.duration < %d THEN 1 END) as shortJobs`,shortThreshold),
).From("job").LeftJoin("hpc_user ON hpc_user.username = job.hpc_user").GroupBy(col)
}else{
query=sq.Select(
col,
"'' as name",
"COUNT(job.id) as totalJobs",
"COUNT(DISTINCT job.hpc_user) AS totalUsers",
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END)) / 3600) as int) as totalWalltime`,now),
`CAST(SUM(job.num_nodes) as int) as totalNodes`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_nodes) / 3600) as int) as totalNodeHours`,now),
`CAST(SUM(job.num_hwthreads) as int) as totalCores`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_hwthreads) / 3600) as int) as totalCoreHours`,now),
`CAST(SUM(job.num_acc) as int) as totalAccs`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_acc) / 3600) as int) as totalAccHours`,now),
`COUNT(CASE WHEN job.job_state = 'running' THEN 1 END) as runningJobs`,
fmt.Sprintf(`COUNT(CASE WHEN job.duration < %d THEN 1 END) as shortJobs`,shortThreshold),
).From("job").GroupBy(col)
}
columns=append(columns,col)
}
columns=append(columns,"COUNT(*) as totalJobs")
ifneed("totalUsers")&&col!="job.hpc_user"{
columns=append(columns,"COUNT(DISTINCT job.hpc_user) AS totalUsers")
}else{
query=sq.Select(
"COUNT(job.id) as totalJobs",
"COUNT(DISTINCT job.hpc_user) AS totalUsers",
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END)) / 3600) as int)`,now),
`CAST(SUM(job.num_nodes) as int)`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_nodes) / 3600) as int)`,now),
`CAST(SUM(job.num_hwthreads) as int)`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_hwthreads) / 3600) as int)`,now),
`CAST(SUM(job.num_acc) as int)`,
fmt.Sprintf(`CAST(ROUND(SUM((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) * job.num_acc) / 3600) as int)`,now),
`COUNT(CASE WHEN job.job_state = 'running' THEN 1 END) as runningJobs`,
fmt.Sprintf(`COUNT(CASE WHEN job.duration < %d THEN 1 END) as shortJobs`,shortThreshold),
).From("job")
columns=append(columns,"0 AS totalUsers")
}
ifneed("totalWalltime"){
columns=append(columns,fmt.Sprintf(`CAST(ROUND(SUM(%s) / 3600) as int) as totalWalltime`,durationExpr))
}else{
columns=append(columns,"0 as totalWalltime")
}
ifneed("totalNodes"){
columns=append(columns,`CAST(SUM(job.num_nodes) as int) as totalNodes`)
}else{
columns=append(columns,"0 as totalNodes")
}
ifneed("totalNodeHours"){
columns=append(columns,fmt.Sprintf(`CAST(ROUND(SUM(%s * job.num_nodes) / 3600) as int) as totalNodeHours`,durationExpr))
}else{
columns=append(columns,"0 as totalNodeHours")
}
ifneed("totalCores"){
columns=append(columns,`CAST(SUM(job.num_hwthreads) as int) as totalCores`)
}else{
columns=append(columns,"0 as totalCores")
}
ifneed("totalCoreHours"){
columns=append(columns,fmt.Sprintf(`CAST(ROUND(SUM(%s * job.num_hwthreads) / 3600) as int) as totalCoreHours`,durationExpr))
}else{
columns=append(columns,"0 as totalCoreHours")
}
ifneed("totalAccs"){
columns=append(columns,`CAST(SUM(job.num_acc) as int) as totalAccs`)
}else{
columns=append(columns,"0 as totalAccs")
}
ifneed("totalAccHours"){
columns=append(columns,fmt.Sprintf(`CAST(ROUND(SUM(%s * job.num_acc) / 3600) as int) as totalAccHours`,durationExpr))
}else{
columns=append(columns,"0 as totalAccHours")
}
ifneed("runningJobs"){
columns=append(columns,`COUNT(CASE WHEN job.job_state = 'running' THEN 1 END) as runningJobs`)
}else{
columns=append(columns,"0 as runningJobs")
}
ifneed("shortJobs"){
columns=append(columns,fmt.Sprintf(`COUNT(CASE WHEN job.duration < %d THEN 1 END) as shortJobs`,shortThreshold))
// Return X-Values always as seconds, will be formatted into minutes and hours in frontend
value:=fmt.Sprintf(`CAST(ROUND(((CASE WHEN job.job_state = "running" THEN %d - job.start_time ELSE job.duration END) / %d) + 1) as int) as value`,time.Now().Unix(),targetBinSize)
value:=fmt.Sprintf(`CAST(ROUND(((CASE WHEN job.job_state = 'running' THEN %d - job.start_time ELSE job.duration END) / %d) + 1) as int) as value`,time.Now().Unix(),targetBinSize)
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