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Delete compatibility code for job level update stanza #3979

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Mar 21, 2018
Merged

Delete compatibility code for job level update stanza #3979

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7047b4c
Remove compat code for upgrade stanza that copied state from job leve…
preetapan Mar 14, 2018
890a2a5
lint warning fixed
preetapan Mar 14, 2018
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79 changes: 0 additions & 79 deletions nomad/structs/structs.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1784,85 +1784,6 @@ func (j *Job) Canonicalize() (warnings error) {
j.Periodic.Canonicalize()
}

// COMPAT: Remove in 0.7.0
// Rewrite any job that has an update block with pre 0.6.0 syntax.
jobHasOldUpdate := j.Update.Stagger > 0 && j.Update.MaxParallel > 0
if jobHasOldUpdate && j.Type != JobTypeBatch {
// Build an appropriate update block and copy it down to each task group
base := DefaultUpdateStrategy.Copy()
base.MaxParallel = j.Update.MaxParallel
base.MinHealthyTime = j.Update.Stagger

// Add to each task group, modifying as needed
upgraded := false
l := len(j.TaskGroups)
for _, tg := range j.TaskGroups {
// The task group doesn't need upgrading if it has an update block with the new syntax
u := tg.Update
if u != nil && u.Stagger > 0 && u.MaxParallel > 0 &&
u.HealthCheck != "" && u.MinHealthyTime > 0 && u.HealthyDeadline > 0 {
continue
}

upgraded = true

// The MaxParallel for the job should be 10% of the total count
// unless there is just one task group then we can infer the old
// max parallel should be the new
tgu := base.Copy()
if l != 1 {
// RoundTo 10%
var percent float64 = float64(tg.Count) * 0.1
tgu.MaxParallel = int(percent + 0.5)
}

// Safety guards
if tgu.MaxParallel == 0 {
tgu.MaxParallel = 1
} else if tgu.MaxParallel > tg.Count {
tgu.MaxParallel = tg.Count
}

tg.Update = tgu
}

if upgraded {
w := "A best effort conversion to new update stanza introduced in v0.6.0 applied. " +
"Please update upgrade stanza before v0.7.0."
multierror.Append(&mErr, fmt.Errorf(w))
}
}

// Ensure that the batch job doesn't have new style or old style update
// stanza. Unfortunately are scanning here because we have to deprecate over
// a release so we can't check in the task group since that may be new style
// but wouldn't capture the old style and we don't want to have duplicate
// warnings.
if j.Type == JobTypeBatch {
displayWarning := jobHasOldUpdate
j.Update.Stagger = 0
j.Update.MaxParallel = 0
j.Update.HealthCheck = ""
j.Update.MinHealthyTime = 0
j.Update.HealthyDeadline = 0
j.Update.AutoRevert = false
j.Update.Canary = 0

// Remove any update spec from the task groups
for _, tg := range j.TaskGroups {
if tg.Update != nil {
displayWarning = true
tg.Update = nil
}
}

if displayWarning {
w := "Update stanza is disallowed for batch jobs since v0.6.0. " +
"The update block has automatically been removed"
multierror.Append(&mErr, fmt.Errorf(w))
}
}

return mErr.ErrorOrNil()
}

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