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import sys
import json
from dbaccess import execQuery
from misc import idToText, printJSONHeader
class ListContexts:
def __init__(self, ranked_only):
self.ranked_only = ranked_only
def rankingsExist(self, contextId):
rankings = execQuery(
"SELECT id FROM ranking WHERE context2Id = %s LIMIT 1",
(contextId,))
return len(rankings) > 0
def execute(self):
# Get all host/platform/branch/sha1 combinations:
contexts = execQuery(
"SELECT id, hostId, platformId, branchId, sha1Id,"
" EXTRACT(EPOCH FROM timestamp)::INT"
" FROM context"
" ORDER BY hostId, platformId,"
" branchId, timestamp DESC;", ()) \
+ [(-1, -1, -1, -1, -1, -1)] # Sentinel value
self.contexts = []
if not len(contexts):
return
id, host, platform, branch, sha1, timestamp = contexts[0]
curHost, curPlatform, curBranch = host, platform, branch
rankings_exist = self.rankingsExist(id)
rankings_exist_count = 1 if rankings_exist else 0
curSnapshots = []
if (not self.ranked_only) or rankings_exist:
curSnapshots = [
(idToText('sha1', sha1), timestamp, 1 if rankings_exist else 0)]
for (id, host, platform, branch, sha1, timestamp) in contexts[1:]:
if (host, platform, branch) != (curHost, curPlatform, curBranch):
if (not self.ranked_only) or (rankings_exist_count > 0):
assert len(curSnapshots) > 0
self.contexts.append({
'host' : idToText('host', curHost),
'platform' : idToText('platform', curPlatform),
'branch' : idToText('branch', curBranch),
'snapshots' : curSnapshots
})
rankings_exist_count = 0
curHost, curPlatform, curBranch = host, platform, branch
curSnapshots = []
rankings_exist = self.rankingsExist(id)
if rankings_exist:
rankings_exist_count = rankings_exist_count + 1
if (not self.ranked_only) or rankings_exist:
curSnapshots.append(
(idToText('sha1', sha1), timestamp,
1 if rankings_exist else 0))
self.writeOutput()
def writeOutputAsJSON(self):
printJSONHeader()
json.dump({ 'contexts' : self.contexts }, sys.stdout)
class ListContextsAsJSON(ListContexts):
def writeOutput(self):
self.writeOutputAsJSON()
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