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pgadmin4/web/pgadmin/tools/debugger/__init__.py
Alexander Lakhin 23d431fb54 Remove more exclamation marks from error messages.
2017-11-01 15:18:07 +00:00

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##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2017, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
##########################################################################
"""A blueprint module implementing the debugger"""
MODULE_NAME = 'debugger'
import simplejson as json
import random
from flask import url_for, Response, render_template, request, session, current_app
from flask_babel import gettext
from flask_security import login_required
from pgadmin.utils import PgAdminModule
from pgadmin.utils.ajax import bad_request
from pgadmin.utils.ajax import make_json_response, \
internal_server_error
from pgadmin.utils.driver import get_driver
from config import PG_DEFAULT_DRIVER
from pgadmin.model import db, DebuggerFunctionArguments
from pgadmin.utils.preferences import Preferences
# Constants
ASYNC_OK = 1
class DebuggerModule(PgAdminModule):
"""
class DebuggerModule(PgAdminModule)
A module class for debugger which is derived from PgAdminModule.
Methods:
-------
* get_own_javascripts(self)
- Method is used to load the required javascript files for debugger module
"""
LABEL = gettext("Debugger")
def get_own_javascripts(self):
scripts = list()
for name, script in [
['pgadmin.tools.debugger.controller', 'js/debugger'],
['pgadmin.tools.debugger.ui', 'js/debugger_ui'],
['pgadmin.tools.debugger.direct', 'js/direct']
]:
scripts.append({
'name': name,
'path': url_for('debugger.index') + script,
'when': None
})
return scripts
def register_preferences(self):
self.open_in_new_tab = self.preference.register(
'display', 'debugger_new_browser_tab',
gettext("Open in new browser tab"), 'boolean', False,
category_label=gettext('Display'),
help_str=gettext('If set to True, the Debugger '
'will be opened in a new browser tab.')
)
def get_exposed_url_endpoints(self):
"""
Returns the list of URLs exposed to the client.
"""
return ['debugger.index','debugger.init_for_function',
'debugger.init_for_trigger',
'debugger.direct', 'debugger.initialize_target_for_function',
'debugger.initialize_target_for_trigger', 'debugger.close',
'debugger.restart',
'debugger.start_listener', 'debugger.execute_query',
'debugger.messages',
'debugger.start_execution', 'debugger.set_breakpoint',
'debugger.clear_all_breakpoint', 'debugger.deposit_value',
'debugger.select_frame', 'debugger.get_arguments',
'debugger.set_arguments',
'debugger.poll_end_execution_result', 'debugger.poll_result'
]
blueprint = DebuggerModule(MODULE_NAME, __name__)
@blueprint.route("/", endpoint='index')
@login_required
def index():
return bad_request(errormsg=gettext("This URL cannot be called directly."))
@blueprint.route("/js/debugger.js")
@login_required
def script():
"""render the main debugger javascript file"""
return Response(response=render_template("debugger/js/debugger.js", _=gettext),
status=200,
mimetype="application/javascript")
@blueprint.route("/js/debugger_ui.js")
@login_required
def script_debugger_js():
"""render the debugger UI javascript file"""
return Response(response=render_template("debugger/js/debugger_ui.js", _=gettext),
status=200,
mimetype="application/javascript")
@blueprint.route("/js/direct.js")
@login_required
def script_debugger_direct_js():
"""render the javascript file required send and receive the response from server for debugging"""
return Response(response=render_template("debugger/js/direct.js", _=gettext),
status=200,
mimetype="application/javascript")
def update_session_debugger_transaction(trans_id, data):
"""Update the session variables required for debugger with transaction ID"""
debugger_data = session['debuggerData']
debugger_data[str(trans_id)] = data
session['debuggerData'] = debugger_data
def update_session_function_transaction(trans_id, data):
"""Update the session variables of functions required to debug with transaction ID"""
function_data = session['functionData']
function_data[str(trans_id)] = data
session['functionData'] = function_data
@blueprint.route(
'/init/<node_type>/<int:sid>/<int:did>/<int:scid>/<int:fid>',
methods=['GET'], endpoint='init_for_function'
)
@blueprint.route(
'/init/<node_type>/<int:sid>/<int:did>/<int:scid>/<int:fid>/<int:trid>',
methods=['GET'], endpoint='init_for_trigger'
)
@login_required
def init_function(node_type, sid, did, scid, fid, trid=None):
"""
init_function(node_type, sid, did, scid, fid, trid)
This method is responsible to initialize the function required for debugging.
This method is also responsible for storing the all functions data to session variable.
This is only required for direct debugging. As Indirect debugging does not require these data because user will
provide all the arguments and other functions information through another session to invoke the target.
Parameters:
node_type
- Node type - Function or Procedure
sid
- Server Id
did
- Database Id
scid
- Schema Id
fid
- Function Id
trid
- Trigger Function Id
"""
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(sid)
conn = manager.connection(did=did)
# Get the server version, server type and user information
server_type = manager.server_type
user = manager.user_info
# Check server type is ppas or not
ppas_server = False
if server_type == 'ppas':
ppas_server = True
# Set the template path required to read the sql files
template_path = 'debugger/sql'
if node_type == 'trigger':
# Find trigger function id from trigger id
sql = render_template("/".join([template_path, 'get_trigger_function_info.sql']), table_id=fid, trigger_id=trid)
status, tr_set = conn.execute_dict(sql)
if not status:
current_app.logger.debug("Error retrieving trigger function information from database")
return internal_server_error(errormsg=tr_set)
fid = tr_set['rows'][0]['tgfoid']
# if ppas server and node type is edb function or procedure then extract last argument as function id
if node_type == 'edbfunc' or node_type == 'edbproc':
fid = trid
sql = ''
sql = render_template("/".join([template_path, 'get_function_debug_info.sql']), is_ppas_database=ppas_server,
hasFeatureFunctionDefaults=True, fid=fid)
status, r_set = conn.execute_dict(sql)
if not status:
current_app.logger.debug("Error retrieving function information from database")
return internal_server_error(errormsg=r_set)
ret_status = status
# Check that the function is actually debuggable...
if r_set['rows'][0]:
# Function with a colon in the name cannot be debugged.
# If this is an EDB wrapped function, no debugging allowed
# Function with return type "trigger" cannot be debugged.
if ":" in r_set['rows'][0]['name']:
ret_status = False
msg = gettext("Functions with a colon in the name cannot be debugged.")
elif ppas_server and r_set['rows'][0]['prosrc'].lstrip().startswith('$__EDBwrapped__$'):
ret_status = False
msg = gettext("EDB Advanced Server wrapped functions cannot be debugged.")
# We cannot debug if PPAS and argument mode is VARIADIC
elif ppas_server and r_set['rows'][0]['lanname'] == 'edbspl' and \
r_set['rows'][0]['proargmodes'] is not None and \
'v' in r_set['rows'][0]['proargmodes']:
ret_status = False
msg = gettext(
"An 'edbspl' target with a variadic argument is not supported"
" and cannot be debugged."
)
else:
status_in, rid_tar = conn.execute_scalar(
"SELECT count(*) FROM pg_proc WHERE proname = 'pldbg_get_target_info'")
if not status_in:
current_app.logger.debug("Failed to find the pldbgapi extension in this database.")
return internal_server_error(gettext("Failed to find the pldbgapi extension in this database."))
#We also need to check to make sure that the debugger library is also available.
status_in, ret_oid = conn.execute_scalar(
"SELECT count(*) FROM pg_proc WHERE proname = 'plpgsql_oid_debug'")
if not status_in:
current_app.logger.debug("Failed to find the pldbgapi extension in this database.")
return internal_server_error(gettext("Failed to find the pldbgapi extension in this database."))
# Debugger plugin is configured but pldggapi extension is not created so return error
if rid_tar == '0' or ret_oid == '0':
msg = gettext("The debugger plugin is not enabled. Please create the pldbgapi extension in this database.")
ret_status = False
else:
ret_status = False
msg = gettext("The function/procedure cannot be debugged")
# Return the response that function cannot be debug...
if not ret_status:
current_app.logger.debug(msg)
return internal_server_error(msg)
# Store the function information in session variable
if 'funcData' not in session:
function_data = dict()
else:
function_data = session['funcData']
data = {'name': r_set['rows'][0]['proargnames'],
'type': r_set['rows'][0]['proargtypenames'],
'use_default': r_set['rows'][0]['pronargdefaults'],
'default_value': r_set['rows'][0]['proargdefaults'],
'require_input': True}
# Below will check do we really required for the user input arguments and show input dialog
if not r_set['rows'][0]['proargtypenames']:
data['require_input'] = False
else:
if r_set['rows'][0]['pkg'] != 0 and r_set['rows'][0]['pkgconsoid'] != 0:
data['require_input'] = True
if r_set['rows'][0]['proargmodes']:
pro_arg_modes = r_set['rows'][0]['proargmodes'].split(",")
for pr_arg_mode in pro_arg_modes:
if pr_arg_mode == 'o' or pr_arg_mode == 't':
data['require_input'] = False
continue
else:
data['require_input'] = True
break
r_set['rows'][0]['require_input'] = data['require_input']
function_data = {
'oid': fid,
'name': r_set['rows'][0]['name'],
'is_func': r_set['rows'][0]['isfunc'],
'is_callable': False,
'schema': r_set['rows'][0]['schemaname'],
'language': r_set['rows'][0]['lanname'],
'return_type': r_set['rows'][0]['rettype'],
'args_type': r_set['rows'][0]['proargtypenames'],
'args_name': r_set['rows'][0]['proargnames'],
'arg_mode': r_set['rows'][0]['proargmodes'],
'use_default': r_set['rows'][0]['pronargdefaults'],
'default_value': r_set['rows'][0]['proargdefaults'],
'pkgname': r_set['rows'][0]['pkgname'],
'pkg': r_set['rows'][0]['pkg'],
'require_input': data['require_input'],
'args_value': ''
}
session['funcData'] = function_data
return make_json_response(
data=r_set['rows'],
status=200
)
@blueprint.route('/direct/<int:trans_id>', methods=['GET'], endpoint='direct')
@login_required
def direct_new(trans_id):
debugger_data = session['debuggerData']
# Return from the function if transaction id not found
if str(trans_id) not in debugger_data:
return make_json_response(data={'status': True})
obj = debugger_data[str(trans_id)]
# if indirect debugging pass value 0 to client and for direct debugging pass it to 1
debug_type = 0 if obj['debug_type'] == 'indirect' else 1
"""
Animations and transitions are not automatically GPU accelerated and by default use browser's slow rendering engine.
We need to set 'translate3d' value of '-webkit-transform' property in order to use GPU.
After applying this property under linux, Webkit calculates wrong position of the elements so panel contents are not visible.
To make it work, we need to explicitly set '-webkit-transform' property to 'none' for .ajs-notifier, .ajs-message, .ajs-modal classes.
This issue is only with linux runtime application and observed in Query tool and debugger.
When we open 'Open File' dialog then whole Query-tool panel content is not visible though it contains HTML element in back end.
The port number should have already been set by the runtime if we're running in desktop mode.
"""
is_linux_platform = False
from sys import platform as _platform
if "linux" in _platform:
is_linux_platform = True
return render_template(
"debugger/direct.html",
_=gettext,
function_name=obj['function_name'],
uniqueId=trans_id,
debug_type=debug_type,
is_desktop_mode=current_app.PGADMIN_RUNTIME,
is_linux=is_linux_platform,
stylesheets=[url_for('debugger.static', filename='css/debugger.css')]
)
@blueprint.route(
'/initialize_target/<debug_type>/<int:sid>/<int:did>/<int:scid>/<int:func_id>',
methods=['GET', 'POST'],
endpoint='initialize_target_for_function'
)
@blueprint.route(
'/initialize_target/<debug_type>/<int:sid>/<int:did>/<int:scid>/<int:func_id>/<int:tri_id>',
methods=['GET', 'POST'],
endpoint='initialize_target_for_trigger'
)
@login_required
def initialize_target(debug_type, sid, did, scid, func_id, tri_id=None):
"""
initialize_target(debug_type, sid, did, scid, func_id, tri_id)
This method is responsible for creating an asynchronous connection.
It will also create a unique transaction id and store the information
into session variable.
Parameters:
debug_type
- Type of debugging (Direct or Indirect)
sid
- Server Id
did
- Database Id
scid
- Schema Id
func_id
- Function Id
tri_id
- Trigger Function Id
"""
# Create asynchronous connection using random connection id.
conn_id = str(random.randint(1, 9999999))
try:
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(sid)
conn = manager.connection(did=did, conn_id=conn_id)
except Exception as e:
return internal_server_error(errormsg=str(e))
# Connect the Server
status, msg = conn.connect()
if not status:
return internal_server_error(errormsg=str(msg))
user = manager.user_info
if debug_type == 'indirect':
# If user is super user then we should check debugger library is
# loaded or not
if not user['is_superuser']:
msg = gettext("You must be a superuser to set a global breakpoint "
"and perform indirect debugging.")
return internal_server_error(errormsg=msg)
else:
status_in, rid_pre = conn.execute_scalar(
"SHOW shared_preload_libraries"
)
if not status_in:
return internal_server_error(
gettext("Could not fetch debugger plugin information.")
)
# Need to check if plugin is really loaded or not with
# "plugin_debugger" string
if "plugin_debugger" not in rid_pre:
msg = gettext(
"The debugger plugin is not enabled. "
"Please add the plugin to the shared_preload_libraries "
"setting in the postgresql.conf file and restart the "
"database server for indirect debugging."
)
current_app.logger.debug(msg)
return internal_server_error(msg)
# Set the template path required to read the sql files
template_path = 'debugger/sql'
if tri_id is not None:
# Find trigger function id from trigger id
sql = render_template("/".join([template_path, 'get_trigger_function_info.sql']), table_id=func_id, trigger_id=tri_id)
status, tr_set = conn.execute_dict(sql)
if not status:
current_app.logger.debug("Error retrieving trigger function information from database")
return internal_server_error(errormsg=tr_set)
func_id = tr_set['rows'][0]['tgfoid']
# Create a unique id for the transaction
trans_id = str(random.randint(1, 9999999))
# If there is no debugging information in session variable then create the store that information
if 'debuggerData' not in session:
debugger_data = dict()
else:
debugger_data = session['debuggerData']
status = True
# Find out the debugger version and store it in session variables
status, rid = conn.execute_scalar(
"SELECT COUNT(*) FROM pg_catalog.pg_proc p \
LEFT JOIN pg_catalog.pg_namespace n ON p.pronamespace = n.oid \
WHERE n.nspname = ANY(current_schemas(false)) AND p.proname = 'pldbg_get_proxy_info';"
)
if not status:
return internal_server_error(errormsg=rid)
else:
if rid == 0:
debugger_version = 1
status, rid = conn.execute_scalar("SELECT proxyapiver FROM pldbg_get_proxy_info();")
if status:
if rid == 2 or rid == 3:
debugger_version = rid
else:
status = False
# Add the debugger version information to pgadmin4 log file
current_app.logger.debug("Debugger version is: %d", debugger_version)
# We need to pass the value entered by the user in dialog for direct debugging
# Here we get the value in case of direct debugging so update the session variables accordingly
# For indirect debugging user will provide the data from another session so below condition will be be required
if request.method == 'POST':
data = json.loads(request.values['data'], encoding='utf-8')
if data:
d = session['funcData']
d['args_value'] = data
session['funcData'] = d
# Update the debugger data session variable
# Here frame_id is required when user debug the multilevel function. When user select the frame from client we
# need to update the frame here and set the breakpoint information on that function oid
debugger_data[str(trans_id)] = {
'conn_id': conn_id,
'server_id': sid,
'database_id': did,
'schema_id': scid,
'function_id': func_id,
'function_name': session['funcData']['name'],
'debug_type': debug_type,
'debugger_version': debugger_version,
'frame_id': 0,
'restart_debug': 0
}
# Store the grid dictionary into the session variable
session['debuggerData'] = debugger_data
# Update the function session information with same transaction id
func_data = session['funcData']
# Store the function information in session variable
if 'functionData' not in session:
function_data = dict()
else:
function_data = session['functionData']
function_data[str(trans_id)] = {
'oid': func_data['oid'],
'name': func_data['name'],
'is_func': func_data['is_func'],
'is_callable': func_data['is_callable'],
'schema': func_data['schema'],
'language': func_data['language'],
'return_type': func_data['return_type'],
'args_type': func_data['args_type'],
'args_name': func_data['args_name'],
'arg_mode': func_data['arg_mode'],
'use_default': func_data['use_default'],
'default_value': func_data['default_value'],
'pkgname': func_data['pkgname'],
'pkg': func_data['pkg'],
'require_input': func_data['require_input'],
'args_value': func_data['args_value']
}
# Update the session variable of function information
session['functionData'] = function_data
# Delete the 'funcData' session variables as it is not used now as target is initialized
del session['funcData']
pref = Preferences.module('debugger')
new_browser_tab = pref.preference('debugger_new_browser_tab').get()
return make_json_response(data={'status': status,
'debuggerTransId': trans_id,
'newBrowserTab': new_browser_tab})
@blueprint.route('/close/<int:trans_id>', methods=["DELETE"], endpoint='close')
def close(trans_id):
"""
close(trans_id)
This method is used to close the asynchronous connection
and remove the information of unique transaction id from
the session variable.
Parameters:
trans_id
- unique transaction id.
"""
# As debugger data is not in session that means we have already
# deleted and close the target
if 'debuggerData' not in session:
return make_json_response(data={'status': True})
debugger_data = session['debuggerData']
# Return from the function if transaction id not found
if str(trans_id) not in debugger_data:
return make_json_response(data={'status': True})
obj = debugger_data[str(trans_id)]
try:
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['conn_id'])
conn.cancel_transaction(obj['conn_id'], obj['database_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['exe_conn_id'])
conn.cancel_transaction(obj['exe_conn_id'], obj['database_id'])
manager.release(conn_id=obj['conn_id'])
manager.release(conn_id=obj['exe_conn_id'])
# Delete the existing debugger data in session variable
del session['debuggerData'][str(trans_id)]
del session['functionData'][str(trans_id)]
return make_json_response(data={'status': True})
except Exception as e:
return internal_server_error(errormsg=str(e))
@blueprint.route('/restart/<int:trans_id>', methods=['GET'], endpoint='restart')
@login_required
def restart_debugging(trans_id):
"""
restart_debugging(trans_id)
This method is responsible to restart the same function for the debugging.
Parameters:
trans_id
- Transaction ID
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': False,
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['conn_id'])
if conn.connected():
# Update the session variable "restart_debug" to know that same function debugging has been restarted.
# Delete the existing debugger data in session variable and update with new data
if obj['restart_debug'] == 0:
debugger_data = session['debuggerData']
session_obj = debugger_data[str(trans_id)]
session_obj['restart_debug'] = 1
update_session_debugger_transaction(trans_id, session_obj)
# Store the function information in session variable
if 'functionData' not in session:
function_data = dict()
else:
function_data = {
'server_id': obj['server_id'],
'database_id': obj['database_id'],
'schema_id': obj['schema_id'],
'function_id': obj['function_id'],
'trans_id': str(trans_id),
'proargmodes': session['functionData'][str(trans_id)]['arg_mode'],
'proargtypenames': session['functionData'][str(trans_id)]['args_type'],
'pronargdefaults': session['functionData'][str(trans_id)]['use_default'],
'proargdefaults': session['functionData'][str(trans_id)]['default_value'],
'proargnames': session['functionData'][str(trans_id)]['args_name'],
'require_input': session['functionData'][str(trans_id)]['require_input']
}
return make_json_response(data={'status': True, 'restart_debug': True, 'result': function_data})
else:
status = False
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status})
@blueprint.route(
'/start_listener/<int:trans_id>', methods=['GET', 'POST'],
endpoint='start_listener'
)
@login_required
def start_debugger_listener(trans_id):
"""
start_debugger_listener(trans_id)
This method is responsible to listen and get the required information requested by user during debugging
Parameters:
trans_id
- Transaction ID
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': False,
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
driver = get_driver(PG_DEFAULT_DRIVER)
manager = driver.connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['conn_id'])
ver = manager.version
server_type = manager.server_type
# find the debugger version and execute the query accordingly
dbg_version = obj['debugger_version']
if dbg_version <= 2:
template_path = 'debugger/sql/v1'
else:
template_path = 'debugger/sql/v2'
# If user again start the same debug function with different arguments then we need to save that values to session
# variable and database.
if request.method == 'POST':
data = json.loads(request.values['data'], encoding='utf-8')
if data:
function_data = session['functionData']
session_obj = function_data[str(trans_id)]
session_obj['args_value'] = data
update_session_function_transaction(trans_id, session_obj)
if conn.connected():
# For the direct debugging extract the function arguments values from user and pass to jinja template
# to create the query for execution.
if obj['debug_type'] == 'direct':
str_query = ''
if session['functionData'][str(trans_id)]['pkg'] == 0:
# Form the function name with schema name
func_name = driver.qtIdent(conn, session['functionData'][str(trans_id)]['schema']) + '.' + driver.qtIdent(
conn, session['functionData'][str(trans_id)]['name'])
else:
# Form the edb package function/procedure name with schema name
func_name = driver.qtIdent(conn, session['functionData'][str(trans_id)]['schema']) + '.' + \
driver.qtIdent(conn, session['functionData'][str(trans_id)]['pkgname']) + '.' + \
driver.qtIdent(conn, session['functionData'][str(trans_id)]['name'])
if obj['restart_debug'] == 0:
# render the SQL template and send the query to server
if session['functionData'][str(trans_id)]['language'] == 'plpgsql':
sql = render_template("/".join([template_path, 'debug_plpgsql_execute_target.sql']),
packge_oid=session['functionData'][str(trans_id)]['pkg'],
function_oid=obj['function_id'])
else:
sql = render_template("/".join([template_path, 'debug_spl_execute_target.sql']),
packge_oid=session['functionData'][str(trans_id)]['pkg'],
function_oid=obj['function_id'])
status, res = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=res)
if session['functionData'][str(trans_id)]['arg_mode']:
# In EDBAS 90, if an SPL-function has both an OUT-parameter
# and a return value (which is not possible on PostgreSQL otherwise),
# the return value is transformed into an extra OUT-parameter
# named "_retval_"
if session['functionData'][str(trans_id)]['args_name']:
arg_name = session['functionData'][str(trans_id)]['args_name'].split(",")
if '_retval_' in arg_name:
arg_mode = session['functionData'][str(trans_id)]['arg_mode'].split(",")
arg_mode.pop()
else:
arg_mode = session['functionData'][str(trans_id)]['arg_mode'].split(",")
else:
arg_mode = session['functionData'][str(trans_id)]['arg_mode'].split(",")
else:
arg_mode = ['i'] * len(session['functionData'][str(trans_id)]['args_type'].split(","))
if session['functionData'][str(trans_id)]['args_type']:
if session['functionData'][str(trans_id)]['args_name']:
arg_name = session['functionData'][str(trans_id)]['args_name'].split(",")
if '_retval_' in arg_name:
arg_type = session['functionData'][str(trans_id)]['args_type'].split(",")
arg_type.pop()
else:
arg_type = session['functionData'][str(trans_id)]['args_type'].split(",")
else:
arg_type = session['functionData'][str(trans_id)]['args_type'].split(",")
# Below are two different template to execute and start executer
if manager.server_type != 'pg' and manager.version < 90300:
str_query = render_template("/".join(['debugger/sql', 'execute_edbspl.sql']),
func_name=func_name,
is_func=session['functionData'][str(trans_id)]['is_func'],
lan_name=session['functionData'][str(trans_id)]['language'],
ret_type=session['functionData'][str(trans_id)]['return_type'],
data=session['functionData'][str(trans_id)]['args_value'],
arg_type=arg_type,
args_mode=arg_mode
)
else:
str_query = render_template("/".join(['debugger/sql', 'execute_plpgsql.sql']),
func_name=func_name,
is_func=session['functionData'][str(trans_id)]['is_func'],
ret_type=session['functionData'][str(trans_id)]['return_type'],
data=session['functionData'][str(trans_id)]['args_value']
)
status, result = conn.execute_async(str_query)
if not status:
return internal_server_error(errormsg=result)
else:
if conn.connected():
# For indirect debugging first create the listener and then wait for the target
sql = render_template("/".join([template_path, 'create_listener.sql']))
status, res = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=res)
# Get and store the session variable which is required to fetch other information during debugging
int_session_id = res['rows'][0]['pldbg_create_listener']
# In EnterpriseDB versions <= 9.1 the
# pldbg_set_global_breakpoint function took five arguments,
# the 2nd argument being the package's OID, if any. Starting
# with 9.2, the package OID argument is gone, and the function
# takes four arguments like the community version has always
# done.
if server_type == 'ppas' and ver <= 90100:
sql = render_template("/".join([template_path, 'add_breakpoint_edb.sql']),
session_id=int_session_id,
function_oid=obj['function_id'])
status, res = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=res)
else:
sql = render_template("/".join([template_path, 'add_breakpoint_pg.sql']),
session_id=int_session_id,
function_oid=obj['function_id'])
status, res = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=res)
# wait for the target
sql = render_template("/".join([template_path, 'wait_for_target.sql']),
session_id=int_session_id)
status, res = conn.execute_async(sql)
if not status:
return internal_server_error(errormsg=res)
debugger_data = session['debuggerData']
session_obj = debugger_data[str(trans_id)]
session_obj['exe_conn_id'] = obj['conn_id']
session_obj['restart_debug'] = 1
session_obj['frame_id'] = 0
session_obj['session_id'] = int_session_id
update_session_debugger_transaction(trans_id, session_obj)
return make_json_response(data={'status': status, 'result': res})
else:
status = False
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status, 'result': result})
else:
status = False
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status, 'result': result})
@blueprint.route(
'/execute_query/<int:trans_id>/<query_type>', methods=['GET'],
endpoint='execute_query'
)
@login_required
def execute_debugger_query(trans_id, query_type):
"""
execute_debugger_query(trans_id, query_type)
This method is responsible to execute the query and return value. As this method is generic so user has to pass the
query_type to get the required information for debugging.
e.g. If user want to execute 'step_into' then query_type='step_into'.
If user want to execute 'continue' then query_type='continue'
Parameters:
trans_id
- Transaction ID
query_type
- Type of query to execute
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': False,
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['exe_conn_id'])
# find the debugger version and execute the query accordingly
dbg_version = obj['debugger_version']
if dbg_version <= 2:
template_path = 'debugger/sql/v1'
else:
template_path = 'debugger/sql/v2'
if conn.connected():
sql = render_template(
"/".join([template_path, query_type + ".sql"]),
session_id=obj['session_id']
)
# As the query type is continue or step_into or step_over then we
# may get result after some time so poll the result.
# We need to update the frame id variable when user move the next
# step for debugging.
if query_type == 'continue' or query_type == 'step_into' or \
query_type == 'step_over':
# We should set the frame_id to 0 when execution starts.
if obj['frame_id'] != 0:
session_obj = debugger_data[str(trans_id)]
session_obj['frame_id'] = 0
update_session_debugger_transaction(trans_id, session_obj)
status, result = conn.execute_async(sql)
return make_json_response(
data={'status': status, 'result': result}
)
elif query_type == 'abort_target':
status, result = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=result)
else:
return make_json_response(
info=gettext('Debugging aborted successfully.'),
data={'status': 'Success', 'result': result}
)
else:
status, result = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=result)
else:
result = gettext('Not connected to server or connection '
'with the server has been closed.')
return internal_server_error(errormsg=result)
return make_json_response(
data={'status': 'Success', 'result': result['rows']}
)
@blueprint.route('/messages/<int:trans_id>/', methods=["GET"],endpoint='messages')
@login_required
def messages(trans_id):
"""
messages(trans_id)
This method polls the messages returned by the database server.
Parameters:
trans_id
- unique transaction id.
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': 'NotConnected',
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['conn_id'])
port_number = ''
if conn.connected():
status, result = conn.poll()
notify = conn.messages()
if notify:
# In notice message we need to find "PLDBGBREAK" string to find the
# port number to attach.
# Notice message returned by the server is
# "NOTICE: PLDBGBREAK:7".
# From the above message we need to find out port number
# as "7" so below logic will find 7 as port number
# and attach listened to that port number
offset = notify[0].find('PLDBGBREAK')
str_len = len('PLDBGBREAK')
str_len += 1
tmpOffset = 0
tmpFlag = False
while notify[0][offset + str_len + tmpOffset].isdigit():
status = 'Success'
tmpFlag = True
port_number = port_number + notify[0][offset + str_len + tmpOffset]
tmpOffset += 1
if not tmpFlag:
status = 'Busy'
else:
status = 'Busy'
return make_json_response(
data={'status': status, 'result': port_number}
)
else:
result = gettext(
'Not connected to server or connection with the '
'server has been closed.'
)
return internal_server_error(errormsg=str(result))
@blueprint.route(
'/start_execution/<int:trans_id>/<int:port_num>', methods=['GET'],
endpoint='start_execution'
)
@login_required
def start_execution(trans_id, port_num):
"""
start_execution(trans_id, port_num)
This method is responsible for creating an asynchronous connection for execution thread.
Also store the session id into session return with attach port query for the direct debugging.
Parameters:
trans_id
- Transaction ID
port_num
- Port number to attach
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': 'NotConnected',
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
dbg_version = obj['debugger_version']
# Create asynchronous connection using random connection id.
exe_conn_id = str(random.randint(1, 9999999))
try:
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=exe_conn_id)
except Exception as e:
return internal_server_error(errormsg=str(e))
# Connect the Server
status, msg = conn.connect()
if not status:
return internal_server_error(errormsg=str(msg))
if 'debuggerData' not in session:
debugger_data = dict()
else:
debugger_data = session['debuggerData']
# find the debugger version and execute the query accordingly
dbg_version = obj['debugger_version']
if dbg_version <= 2:
template_path = 'debugger/sql/v1'
else:
template_path = 'debugger/sql/v2'
# connect to port and store the session ID in the session variables
sql = render_template("/".join([template_path, 'attach_to_port.sql']), port=port_num)
status_port, res_port = conn.execute_dict(sql)
if not status_port:
return internal_server_error(errormsg=res_port)
session_obj = debugger_data[str(trans_id)]
session_obj['restart_debug'] = 0
session_obj['frame_id'] = 0
session_obj['exe_conn_id'] = exe_conn_id
session_obj['debugger_version'] = dbg_version
session_obj['session_id'] = res_port['rows'][0]['pldbg_attach_to_port']
update_session_debugger_transaction(trans_id, session_obj)
return make_json_response(data={'status': 'Success', 'result': res_port['rows'][0]['pldbg_attach_to_port']})
@blueprint.route(
'/set_breakpoint/<int:trans_id>/<int:line_no>/<int:set_type>',
methods=['GET'], endpoint='set_breakpoint'
)
@login_required
def set_clear_breakpoint(trans_id, line_no, set_type):
"""
set_clear_breakpoint(trans_id, line_no, set_type)
This method is responsible to set and clean the breakpoint
Parameters:
trans_id
- Transaction ID
line_no
- Line number to set
set_type
- 0 - clear the breakpoint, 1 - set the breakpoint
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': False,
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['exe_conn_id'])
# find the debugger version and execute the query accordingly
dbg_version = obj['debugger_version']
if dbg_version <= 2:
template_path = 'debugger/sql/v1'
else:
template_path = 'debugger/sql/v2'
query_type = ''
# We need to find out function OID before sending the foid to set the breakpoint because it may possible that
# debugging function has multi level function for debugging so we need to save the debug level to session variable
# and pass tha appropriate foid to set the breakpoint.
sql_ = render_template("/".join([template_path, "get_stack_info.sql"]), session_id=obj['session_id'])
status, res_stack = conn.execute_dict(sql_)
if not status:
return internal_server_error(errormsg=res_stack)
# For multilevel function debugging, we need to fetch current selected frame's function oid for setting the
# breakpoint. For single function the frame id will be 0.
foid = res_stack['rows'][obj['frame_id']]['func']
# Check the result of the stack before setting the breakpoint
if conn.connected():
if set_type == 1:
query_type = 'set_breakpoint'
else:
query_type = 'clear_breakpoint'
sql = render_template("/".join([template_path, query_type + ".sql"]), session_id=obj['session_id'],
foid=foid, line_number=line_no)
status, result = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=result)
else:
status = False
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status, 'result': result['rows']})
@blueprint.route(
'/clear_all_breakpoint/<int:trans_id>', methods=['POST'],
endpoint='clear_all_breakpoint'
)
@login_required
def clear_all_breakpoint(trans_id):
"""
clear_all_breakpoint(trans_id)
This method is responsible to clear all the breakpoint
Parameters:
trans_id
- Transaction ID
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': False,
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['exe_conn_id'])
# find the debugger version and execute the query accordingly
dbg_version = obj['debugger_version']
if dbg_version <= 2:
template_path = 'debugger/sql/v1'
else:
template_path = 'debugger/sql/v2'
query_type = ''
if conn.connected():
# get the data sent through post from client
if request.form['breakpoint_list']:
line_numbers = request.form['breakpoint_list'].split(",")
for line_no in line_numbers:
sql = render_template("/".join([template_path, "clear_breakpoint.sql"]), session_id=obj['session_id'],
foid=obj['function_id'], line_number=line_no)
status, result = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=result)
else:
return make_json_response(data={'status': False})
else:
status = False
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status, 'result': result['rows']})
@blueprint.route(
'/deposit_value/<int:trans_id>', methods=['POST'], endpoint='deposit_value'
)
@login_required
def deposit_parameter_value(trans_id):
"""
deposit_parameter_value(trans_id)
This method is responsible to change the value of variables
Parameters:
trans_id
- Transaction ID
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': False,
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['exe_conn_id'])
# find the debugger version and execute the query accordingly
dbg_version = obj['debugger_version']
if dbg_version <= 2:
template_path = 'debugger/sql/v1'
else:
template_path = 'debugger/sql/v2'
query_type = ''
if conn.connected():
# get the data sent through post from client
data = json.loads(request.values['data'], encoding='utf-8')
if data:
sql = render_template("/".join([template_path, "deposit_value.sql"]), session_id=obj['session_id'],
var_name=data[0]['name'], line_number=-1, val=data[0]['value'])
status, result = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=result)
# Check if value deposited successfully or not and depending on the result, return the message information.
if result['rows'][0]['pldbg_deposit_value']:
info = gettext('Value deposited successfully')
else:
info = gettext('Error while setting the value')
return make_json_response(
data={'status': status, 'info': info, 'result': result['rows'][0]['pldbg_deposit_value']})
else:
status = False
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status, 'result': result})
@blueprint.route(
'/select_frame/<int:trans_id>/<int:frame_id>', methods=['GET'],
endpoint='select_frame'
)
@login_required
def select_frame(trans_id, frame_id):
"""
select_frame(trans_id, frame_id)
This method is responsible to select the frame from stack info
Parameters:
trans_id
- Transaction ID
frame_id
- Frame id selected
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': False,
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['exe_conn_id'])
# find the debugger version and execute the query accordingly
dbg_version = obj['debugger_version']
if dbg_version <= 2:
template_path = 'debugger/sql/v1'
else:
template_path = 'debugger/sql/v2'
session_obj = debugger_data[str(trans_id)]
session_obj['frame_id'] = frame_id
update_session_debugger_transaction(trans_id, session_obj)
if conn.connected():
sql = render_template("/".join([template_path, "select_frame.sql"]), session_id=obj['session_id'],
frame_id=frame_id)
status, result = conn.execute_dict(sql)
if not status:
return internal_server_error(errormsg=result)
else:
status = False
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status, 'result': result['rows']})
@blueprint.route(
'/get_arguments/<int:sid>/<int:did>/<int:scid>/<int:func_id>',
methods=['GET'], endpoint='get_arguments'
)
@login_required
def get_arguments_sqlite(sid, did, scid, func_id):
"""
get_arguments_sqlite(sid, did, scid, func_id)
This method is responsible to get the function arguments saved to sqlite database during first debugging.
Parameters:
sid
- Server Id
did
- Database Id
scid
- Schema Id
func_id
- Function Id
"""
"""Get the count of the existing data available in sqlite database"""
DbgFuncArgsCount = DebuggerFunctionArguments.query.filter_by(
server_id=sid, database_id=did, schema_id=scid, function_id=func_id).count()
args_data = []
if DbgFuncArgsCount:
"""Update the Debugger Function Arguments settings"""
DbgFuncArgs = DebuggerFunctionArguments.query.filter_by(
server_id=sid, database_id=did, schema_id=scid, function_id=func_id)
args_list = DbgFuncArgs.all()
for i in range(0, DbgFuncArgsCount):
info = {
"arg_id": args_list[i].arg_id,
"is_null": args_list[i].is_null,
"is_expression": args_list[i].is_expression,
"use_default": args_list[i].use_default,
"value": args_list[i].value
}
args_data.append(info)
# As we do have entry available for that function so we need to add that entry
return make_json_response(data={'result': args_data, 'args_count': DbgFuncArgsCount})
else:
# As we do not have any entry available for that function so we need to add that entry
return make_json_response(data={'result': 'result', 'args_count': DbgFuncArgsCount})
@blueprint.route(
'/set_arguments/<int:sid>/<int:did>/<int:scid>/<int:func_id>',
methods=['POST'], endpoint='set_arguments'
)
@login_required
def set_arguments_sqlite(sid, did, scid, func_id):
"""
set_arguments_sqlite(sid, did, scid, func_id)
This method is responsible for setting the value of function arguments to sqlite database
Parameters:
sid
- Server Id
did
- Database Id
scid
- Schema Id
func_id
- Function Id
"""
if request.values['data']:
data = json.loads(request.values['data'], encoding='utf-8')
try:
for i in range(0, len(data)):
DbgFuncArgsExists = DebuggerFunctionArguments.query.filter_by(
server_id=data[i]['server_id'], database_id=data[i]['database_id'], schema_id=data[i]['schema_id'],
function_id=data[i]['function_id'], arg_id=data[i]['arg_id']).count()
# handle the Array list sent from the client
array_string = ''
if data[i]['value'].__class__.__name__ in ('list') and data[i]['value']:
for k in range(0, len(data[i]['value'])):
array_string += data[i]['value'][k]['value']
if k != (len(data[i]['value']) - 1):
array_string += ','
elif data[i]['value'].__class__.__name__ in ('list') and not data[i]['value']:
array_string = ''
else:
array_string = data[i]['value']
# Check if data is already available in database then update the existing value otherwise add the new value
if DbgFuncArgsExists:
DbgFuncArgs = DebuggerFunctionArguments.query.filter_by(
server_id=data[i]['server_id'], database_id=data[i]['database_id'], schema_id=data[i]['schema_id'],
function_id=data[i]['function_id'], arg_id=data[i]['arg_id']).first()
DbgFuncArgs.is_null = data[i]['is_null']
DbgFuncArgs.is_expression = data[i]['is_expression']
DbgFuncArgs.use_default = data[i]['use_default']
DbgFuncArgs.value = array_string
else:
debugger_func_args = DebuggerFunctionArguments(
server_id=data[i]['server_id'],
database_id=data[i]['database_id'],
schema_id=data[i]['schema_id'],
function_id=data[i]['function_id'],
arg_id=data[i]['arg_id'],
is_null=data[i]['is_null'],
is_expression=data[i]['is_expression'],
use_default=data[i]['use_default'],
value=array_string
)
db.session.add(debugger_func_args)
db.session.commit()
except Exception as e:
current_app.logger.exception(e)
return make_json_response(
status=410,
success=0,
errormsg=e.message
)
return make_json_response(data={'status': True, 'result': 'Success'})
def convert_data_to_dict(conn, result):
"""
This function helps us to convert result set into dict
Args:
conn: Connection object
result: 2d array result set
Returns:
Converted dict data
"""
columns = []
col_info = conn.get_column_info()
# Check column info is available or not
if col_info is not None and len(col_info) > 0:
for col in col_info:
items = list(col.items())
column = dict()
column['name'] = items[0][1]
column['type_code'] = items[1][1]
columns.append(column)
# We need to convert result from 2D array to dict for BackGrid
# BackGrid do not support for 2D array result as it it Backbone Model based grid
# This Conversion is not an overhead as most of the time
# result will be smaller
_tmp_result = []
for row in result:
temp = dict()
count = 0
for item in row:
temp[columns[count]['name']] = item
count += 1
_tmp_result.append(temp)
# Replace 2d array with dict result
result = _tmp_result
return columns, result
@blueprint.route(
'/poll_end_execution_result/<int:trans_id>/',
methods=["GET"], endpoint='poll_end_execution_result'
)
@login_required
def poll_end_execution_result(trans_id):
"""
poll_end_execution_result(trans_id)
This method polls the end of execution result messages returned by the database server.
Parameters:
trans_id
- unique transaction id.
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': 'NotConnected',
'result': gettext(
'Not connected to server or connection with the '
'server has been closed.')
}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['conn_id'])
if conn.connected():
statusmsg = conn.status_message()
if statusmsg and statusmsg == 'SELECT 1':
statusmsg = ''
status, result = conn.poll()
if status == ASYNC_OK and \
not session['functionData'][str(trans_id)]['is_func'] and \
session['functionData'][str(trans_id)]['language'] == 'edbspl':
status = 'Success'
additional_msgs = conn.messages()
if len(additional_msgs) > 0:
additional_msgs = [msg.strip("\n") for msg in additional_msgs]
additional_msgs = "\n".join(additional_msgs)
if statusmsg:
statusmsg = additional_msgs + "\n" + statusmsg
else:
statusmsg = additional_msgs
return make_json_response(
success=1, info=gettext("Execution Completed."),
data={'status': status, 'status_message': statusmsg}
)
if result:
if 'ERROR' in result:
status = 'ERROR'
return make_json_response(
info=gettext("Execution completed with error"),
data={'status': status, 'status_message': result}
)
else:
status = 'Success'
additional_msgs = conn.messages()
if len(additional_msgs) > 0:
additional_msgs = [msg.strip("\n")
for msg in additional_msgs]
additional_msgs = "\n".join(additional_msgs)
if statusmsg:
statusmsg = additional_msgs + "\n" + statusmsg
else:
statusmsg = additional_msgs
columns, result = convert_data_to_dict(conn, result)
return make_json_response(
success=1, info=gettext("Execution Completed."),
data={'status': status, 'result': result,
'col_info': columns, 'status_message': statusmsg}
)
else:
status = 'Busy'
additional_msgs = conn.messages()
if len(additional_msgs) > 0:
additional_msgs = [msg.strip("\n") for msg in additional_msgs]
additional_msgs = "\n".join(additional_msgs)
if statusmsg:
statusmsg = additional_msgs + "\n" + statusmsg
else:
statusmsg = additional_msgs
return make_json_response(data={
'status': status, 'result': result, 'status_message': statusmsg
})
else:
status = 'NotConnected'
result = gettext('Not connected to server or connection with the '
'server has been closed.')
return make_json_response(data={'status': status, 'result': result})
@blueprint.route(
'/poll_result/<int:trans_id>/', methods=["GET"], endpoint='poll_result'
)
@login_required
def poll_result(trans_id):
"""
poll_result(trans_id)
This method polls the result of the asynchronous query and returns the result.
Parameters:
trans_id
- unique transaction id.
"""
debugger_data = session['debuggerData']
if str(trans_id) not in debugger_data:
return make_json_response(
data={'status': 'NotConnected',
'result': gettext('Not connected to server or connection with the server has been closed.')}
)
obj = debugger_data[str(trans_id)]
manager = get_driver(PG_DEFAULT_DRIVER).connection_manager(obj['server_id'])
conn = manager.connection(did=obj['database_id'], conn_id=obj['exe_conn_id'])
if conn.connected():
status, result = conn.poll()
if status == ASYNC_OK and result is not None:
status = 'Success'
columns, result = convert_data_to_dict(conn, result)
else:
status = 'Busy'
else:
status = 'NotConnected'
result = gettext('Not connected to server or connection with the server has been closed.')
return make_json_response(data={'status': status, 'result': result})
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