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perf scripts python: call-graph-from-sql.py: Separate the database details into a class 

Separate the database details into a class that can provide different
connections using the same connection information.  That paves the way
for sub-processes that require their own connection.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20181001062853.28285-7-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2018-10-01 09:28:40 +03:00 committed by Arnaldo Carvalho de Melo
parent 7e4fc93e2a
commit b2556c46a6
1 changed files with 38 additions and 25 deletions
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63
tools/perf/scripts/python/call-graph-from-sql.py
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@ -284,6 +284,42 @@ class MainWindow(QMainWindow):
self.setCentralWidget(self.view)
# Database reference
class DBRef():
def __init__(self, is_sqlite3, dbname):
self.is_sqlite3 = is_sqlite3
self.dbname = dbname
def Open(self, connection_name):
dbname = self.dbname
if self.is_sqlite3:
db = QSqlDatabase.addDatabase("QSQLITE", connection_name)
else:
db = QSqlDatabase.addDatabase("QPSQL", connection_name)
opts = dbname.split()
for opt in opts:
if "=" in opt:
opt = opt.split("=")
if opt[0] == "hostname":
db.setHostName(opt[1])
elif opt[0] == "port":
db.setPort(int(opt[1]))
elif opt[0] == "username":
db.setUserName(opt[1])
elif opt[0] == "password":
db.setPassword(opt[1])
elif opt[0] == "dbname":
dbname = opt[1]
else:
dbname = opt
db.setDatabaseName(dbname)
if not db.open():
raise Exception("Failed to open database " + dbname + " error: " + db.lastError().text())
return db, dbname
# Main
def Main():
@ -302,31 +338,8 @@ def Main():
except:
pass
if is_sqlite3:
db = QSqlDatabase.addDatabase('QSQLITE')
else:
db = QSqlDatabase.addDatabase('QPSQL')
opts = dbname.split()
for opt in opts:
if '=' in opt:
opt = opt.split('=')
if opt[0] == 'hostname':
db.setHostName(opt[1])
elif opt[0] == 'port':
db.setPort(int(opt[1]))
elif opt[0] == 'username':
db.setUserName(opt[1])
elif opt[0] == 'password':
db.setPassword(opt[1])
elif opt[0] == 'dbname':
dbname = opt[1]
else:
dbname = opt
db.setDatabaseName(dbname)
if not db.open():
raise Exception("Failed to open database " + dbname + " error: " + db.lastError().text())
dbref = DBRef(is_sqlite3, dbname)
db, dbname = dbref.Open("main")
app = QApplication(sys.argv)
window = MainWindow(db, dbname)
window.show()