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Fix Out-of-service for ISA 18.2 #870

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merged 1 commit into from Mar 5, 2019
Merged

Fix Out-of-service for ISA 18.2 #870

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25 changes: 15 additions & 10 deletions alerta/models/alarms/isa_18_2.py
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Expand Up @@ -14,7 +14,7 @@
CRITICAL = 'Critical'
HIGH = 'High'
MEDIUM = 'Medium'
LOW = 'LOW'
LOW = 'Low'
ADVISORY = 'Advisory'
OK = 'OK'
UNKNOWN = 'Unknown'
Expand Down Expand Up @@ -112,19 +112,24 @@ def next_state(rule, severity, status):
)
return severity, status

# if alert has non-default status then assume state transition has been handled
# by a pre_receive() plugin and return the current severity and status
if not action and alert.status != StateMachine.DEFAULT_STATUS:
return next_state('External State Change, Any (*) -> Any (*)', current_severity, alert.status)

# Operator Shelve, Any (*) -> Shelve (E)
if action == ACTION_SHELVE:
return next_state('Operator Shelve, Any (*) -> Shelve (E)', current_severity, E_SHLVD)
# Operator Unshelve, Shelve (E) -> Normal (A) or Unack (B)
if action == ACTION_UNSHELVE:
if current_severity == OK:
if current_severity == StateMachine.DEFAULT_NORMAL_SEVERITY:
return next_state('Operator Unshelve, Shelve (E) -> Normal (A)', current_severity, A_NORM)
else:
return next_state('Operator Unshelve, Shelve (E) -> Unack (B)', current_severity, B_UNACK)

# Alarm Occurs, Normal (A) -> Unack (B)
if state == A_NORM:
if current_severity != OK:
if current_severity != StateMachine.DEFAULT_NORMAL_SEVERITY:
return next_state('Alarm Occurs, Normal (A) -> Unack (B)', current_severity, B_UNACK)
# Operator Ack, Unack (B) -> Ack (C)
if state == B_UNACK:
Expand All @@ -137,31 +142,31 @@ def next_state(rule, severity, status):
return next_state('Re-Alarm, Ack (C) -> Unack (B)', current_severity, B_UNACK)
# Process RTN Alarm Clears, Ack (C) -> Normal (A)
if state == C_ACKED:
if current_severity == OK:
if current_severity == StateMachine.DEFAULT_NORMAL_SEVERITY:
return next_state('Process RTN Alarm Clears, Ack (C) -> Normal (A)', current_severity, A_NORM)
# Process RTN and Alarm Clears, Unack (B) -> RTN Unack (D)
if state == B_UNACK:
if current_severity == OK:
if current_severity == StateMachine.DEFAULT_NORMAL_SEVERITY:
return next_state('Process RTN and Alarm Clears, Unack (B) -> RTN Unack (D)', current_severity, D_RTNUN)
# Operator Ack, RTN Unack (D) -> Normal (A)
if state == D_RTNUN:
if action == ACTION_ACK:
return next_state(' Operator Ack, RTN Unack (D) -> Normal (A)', current_severity, A_NORM)
# Re-Alarm Unack, RTN Unack (D) -> Unack (B) # FIXME - missing from descriptions?
if state == D_RTNUN:
if current_severity != OK:
if current_severity != StateMachine.DEFAULT_NORMAL_SEVERITY:
return next_state('Re-Alarm Unack, RTN Unack (D) -> Unack (B)', current_severity, B_UNACK)

# Return from Suppressed-by-design
# Return from Suppressed-by-design (F) -> Normal (A) or Unack (B)
if state == F_DSUPR:
if current_severity == OK:
if current_severity == StateMachine.DEFAULT_NORMAL_SEVERITY:
return next_state('Return from Suppressed-by-design, Suppressed-by-design (G) -> Normal (A)', current_severity, A_NORM)
else:
return next_state('Return from Suppressed-by-design, Suppressed-by-design (G) -> Unack (B)', current_severity, B_UNACK)

# Return from Out-of-service
# Return from Out-of-service (G) -> Normal (A) or Unack (B)
if state == G_OOSRV:
if current_severity == OK:
if current_severity == StateMachine.DEFAULT_NORMAL_SEVERITY:
return next_state('Return from Out-of-service, Out-of-service (G) -> Normal (A)', current_severity, A_NORM)
else:
return next_state('Return from Out-of-service, Out-of-service (G) -> Unack (B)', current_severity, B_UNACK)
Expand Down