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import sys, json, calendar, time
from dbaccess import execQuery, database
from misc import (
textToId, idToText, getContext, getTimestampFromContext, getSnapshots,
benchmarkToComponents, printJSONHeader)
# Gets the top changes for a specific context by considering only the
# last change in each time series.
#
# An additional filter is applied by only considering results from
# test cases matching test_case_ids.
#
# NOTE: The result may contain at most one change from a given time series.
def getTopChangesForContext_last(
host_id, platform_id, branch_id, regressions, premature, limit,
test_case_ids):
query = (
"SELECT change.benchmarkId, change.metricId, sha1Id, last_timestamp, ")
query += ("greatest(score, premature_score)" if premature else "score")
query += (
" AS final_score"
" FROM"
" (SELECT benchmarkId, metricId, max(timestamp) AS last_timestamp"
" FROM change"
" WHERE hostId = %s"
" AND platformId = %s"
" AND branchId = %s"
" AND regression = %s")
args = [host_id, platform_id, branch_id, regressions]
if len(test_case_ids) > 0:
query += (
" AND testCaseId IN (%s" + ", %s"*(len(test_case_ids) - 1) + ")"
)
args += test_case_ids
query += (
" GROUP BY benchmarkId, metricId) AS last_change"
" , change"
" WHERE last_change.benchmarkId = change.benchmarkId"
" AND last_change.metricId = change.metricId"
" AND change.timestamp = last_timestamp"
" ORDER BY final_score DESC, last_timestamp DESC"
" LIMIT %s"
)
args.append(limit)
return execQuery(query, args)
# Gets the top changes for a specific context by considering all
# changes in the given time scope.
#
# An additional filter is applied by only considering results from
# test cases matching test_case_ids.
#
# NOTE: The result may contain any number of changes from a given time
# series.
def getTopChangesForContext_timeScope(
host_id, platform_id, branch_id, regressions, premature, limit,
test_case_ids, lo_timestamp):
query = "SELECT benchmarkId, metricId, sha1Id, timestamp, "
query += ("greatest(score, premature_score)" if premature else "score")
query += (
" AS final_score"
" FROM change"
" WHERE hostId = %s"
" AND platformId = %s"
" AND branchId = %s"
" AND regression = %s"
" AND timestamp >= %s")
args = [host_id, platform_id, branch_id, regressions, lo_timestamp]
if len(test_case_ids) > 0:
query += (
" AND testCaseId IN (%s" + ", %s"*(len(test_case_ids) - 1) + ")"
)
args += test_case_ids
query += (
" ORDER BY final_score DESC, timestamp DESC"
" LIMIT %s"
)
args.append(limit)
return execQuery(query, args)
# Returns test case IDs corresponding to the names in test_case_filter.
def getTestCaseIdsFromFilter(test_case_filter):
return (execQuery(
"SELECT id FROM testCase"
" WHERE value IN (%s" + ", %s"*(len(test_case_filter) - 1) + ")",
tuple(test_case_filter))
if ((test_case_filter != None) and (len(test_case_filter) > 0))
else ())
class GetTopChanges:
def __init__(
self, test_case_filter, regressions, last, timescope, premature, limit):
self.test_case_filter = test_case_filter
self.regressions = regressions
self.last = last
self.timescope = timescope
self.premature = premature
self.limit = limit
# Gets the top changes for a specific context.
def getTopChangesForContext(
self, host_id, platform_id, branch_id, lo_timestamp):
test_case_ids = getTestCaseIdsFromFilter(self.test_case_filter)
return (
getTopChangesForContext_last(
host_id, platform_id, branch_id, self.regressions,
self.premature, self.limit, test_case_ids)
if self.last else
getTopChangesForContext_timeScope(
host_id, platform_id, branch_id, self.regressions,
self.premature, self.limit, test_case_ids, lo_timestamp)
)
# Gets the top changes for all contexts.
def getTopChangesForAllContexts(self):
# Compute lowest timestamp (secs since 1970) in time scope (days ago):
curr_timestamp = calendar.timegm(time.gmtime())
secs_in_day = 24 * 60 * 60
lo_timestamp = (
-1 if (self.timescope < 0) else
curr_timestamp - self.timescope * secs_in_day)
context_ids = execQuery(
"SELECT DISTINCT hostId, platformId, branchId FROM context "
"ORDER BY hostId, platformId, branchId", ())
contexts = []
for host_id, platform_id, branch_id in context_ids:
top_changes = self.getTopChangesForContext(
host_id, platform_id, branch_id, lo_timestamp)
contexts.append({
"hostId": host_id,
"platformId": platform_id,
"branchId": branch_id,
"topchanges": top_changes
})
return contexts
def execute(self):
self.contexts = self.getTopChangesForAllContexts()
self.writeOutput()
def writeOutputAsJSON(self):
printJSONHeader()
json.dump({
'database': database(),
'regressions': self.regressions,
'last': self.last,
'timescope': self.timescope,
'premature': self.premature,
'limit': self.limit,
'contexts': self.contexts
}, sys.stdout)
class GetTopChangesAsJSON(GetTopChanges):
def writeOutput(self):
self.writeOutputAsJSON()
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