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from __future__ import absolute_import, unicode_literals
from django.http import HttpResponseBadRequest
from django.template.response import SimpleTemplateResponse
from django.views.decorators.csrf import csrf_exempt
from debug_toolbar.decorators import require_show_toolbar
from debug_toolbar.panels.sql.forms import SQLSelectForm
@csrf_exempt
@require_show_toolbar
def sql_select(request):
"""Returns the output of the SQL SELECT statement"""
form = SQLSelectForm(request.POST or None)
if form.is_valid():
sql = form.cleaned_data['raw_sql']
params = form.cleaned_data['params']
cursor = form.cursor
cursor.execute(sql, params)
headers = [d[0] for d in cursor.description]
result = cursor.fetchall()
cursor.close()
context = {
'result': result,
'sql': form.reformat_sql(),
'duration': form.cleaned_data['duration'],
'headers': headers,
'alias': form.cleaned_data['alias'],
}
# Using SimpleTemplateResponse avoids running global context processors.
return SimpleTemplateResponse('debug_toolbar/panels/sql_select.html', context)
return HttpResponseBadRequest('Form errors')
@csrf_exempt
@require_show_toolbar
def sql_explain(request):
"""Returns the output of the SQL EXPLAIN on the given query"""
form = SQLSelectForm(request.POST or None)
if form.is_valid():
sql = form.cleaned_data['raw_sql']
params = form.cleaned_data['params']
vendor = form.connection.vendor
cursor = form.cursor
if vendor == 'sqlite':
# SQLite's EXPLAIN dumps the low-level opcodes generated for a query;
# EXPLAIN QUERY PLAN dumps a more human-readable summary
# See https://www.sqlite.org/lang_explain.html for details
cursor.execute("EXPLAIN QUERY PLAN %s" % (sql,), params)
elif vendor == 'postgresql':
cursor.execute("EXPLAIN ANALYZE %s" % (sql,), params)
else:
cursor.execute("EXPLAIN %s" % (sql,), params)
headers = [d[0] for d in cursor.description]
result = cursor.fetchall()
cursor.close()
context = {
'result': result,
'sql': form.reformat_sql(),
'duration': form.cleaned_data['duration'],
'headers': headers,
'alias': form.cleaned_data['alias'],
}
# Using SimpleTemplateResponse avoids running global context processors.
return SimpleTemplateResponse('debug_toolbar/panels/sql_explain.html', context)
return HttpResponseBadRequest('Form errors')
@csrf_exempt
@require_show_toolbar
def sql_profile(request):
"""Returns the output of running the SQL and getting the profiling statistics"""
form = SQLSelectForm(request.POST or None)
if form.is_valid():
sql = form.cleaned_data['raw_sql']
params = form.cleaned_data['params']
cursor = form.cursor
result = None
headers = None
result_error = None
try:
cursor.execute("SET PROFILING=1") # Enable profiling
cursor.execute(sql, params) # Execute SELECT
cursor.execute("SET PROFILING=0") # Disable profiling
# The Query ID should always be 1 here but I'll subselect to get
# the last one just in case...
cursor.execute("""
SELECT *
FROM information_schema.profiling
WHERE query_id = (
SELECT query_id
FROM information_schema.profiling
ORDER BY query_id DESC
LIMIT 1
)
""")
headers = [d[0] for d in cursor.description]
result = cursor.fetchall()
except Exception:
result_error = "Profiling is either not available or not supported by your database."
cursor.close()
context = {
'result': result,
'result_error': result_error,
'sql': form.reformat_sql(),
'duration': form.cleaned_data['duration'],
'headers': headers,
'alias': form.cleaned_data['alias'],
}
# Using SimpleTemplateResponse avoids running global context processors.
return SimpleTemplateResponse('debug_toolbar/panels/sql_profile.html', context)
return HttpResponseBadRequest('Form errors')
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