I am working on IB Gateway and want to get the historical data.
As i have completed the steps on IB Gateway software to enable the API.
I am using python notebook for this.
For now i am running this code and i am able to import the given library but rest of the code giving me this error. Important thing is connection is established as I have mention client id 1. then it is created and can be seen on IB Gateway application.
My code is here.
from ib_insync import *
#util.startLoop() # uncomment this line when in a notebook
ib = IB()
ib.connect('127.0.0.1', 5021, clientId=1)
bars = ib.reqHistoricalData(
contract=Stock('TSLA', 'SMART', 'USD'),
endDateTime='',
durationStr='30 D',
barSizeSetting='1 hour',
whatToShow='TRADES',
useRTH=True)
print(bars)
Here is the error.
Peer closed connection
clientId 1 already in use?
API connection failed: CancelledError()
As i am using notebook if i uncomment the second line (util.startLoop()) it adds one more error about timeout..
Need help to get this done.
Big Thanks
Assign a different clientID to this connecion:
ib.connect('127.0.0.1', 5021, clientId=2)
Apparently you already have another connection with clientId=1.
Related
I'm using great_expectations==0.13.4 and sqlalchemy==1.3.22 and am attempting to create the string which will provide the connection in URL format. These will be added manually to the systems, as the CLI does not allow for identification of the CERT or the Schema.
I'm using the following code to define and connect to the URL, while I had this working last night my computer rebooted before I could hit save. I believe the issue is with line "query={"ssl_ca": certificate_file}", but I cannot identify the correct keyword to allow the cert file to be listed in the URL.
Any and all help is appreciated. Thank you
import sqlalchemy
certificate_file = r'c:\Users\Dir\To\My\Certificate.crt'
sqlUrl = sqlalchemy.engine.url.URL(
drivername='presto',
username=actual_user,
password= quote_plus(actual_pswd),
host= hostname,
port=port_num,
database=db_name,
query={"ssl_ca": certificate_file}
)
engine = sqlalchemy.create_engine(sqlUrl)
with engine.connect() as connection:
result = connection.execute("show schemas")
The error I get is during the line above ("with engine.connect() as connecton") is
StatementError: (builtins.TypeError) __init__() got an unexpected keyword argument 'ssl_ca'
[SQL: show schemas]
I have tried options in the URL connection for query (request_kwargs, verify & ca, ssl_ca) and some variations there in. So far no luck
I have a situation where I want to import my graph data to database.I am having janusgraph(latest version) running with cassandra(version 3) and elasticsearch(version 6.6.0) using Docker.I have been suggested to use gryo format.So I have tried this command
graph.io(IoCore.gryo()).reader().create().readGraph(ToInputStream.from("my_graph.kryo"), graph);
but ended up with an error
No such property: ToInputStream for class: Script4
The documentation I am following is here.Please take a look and put me in a right procedure. Thanks in advance!
ToInputStream is not a function of Gremlin or JanusGraph. I believe that it is only a function of IBM Compose so unless you are running JanusGraph on that specific platform, this command will not work.
Versions of JanusGraph that utilize TinkerPop 3.4.x will support the io() step and this is the preferred manner in which to load gryo (as well as graphson and graphml) files.
Graph graph = ... // setup JanusGraph instance
GraphTraversalSource g = traversal().withGraph(graph); // might use withRemote() here instead depending on how you are connecting I suppose
g.io("graph.kryo").read().iterate()
Note that if you are connecting remotely - it seems you are sending scripts to the Docker instance given your error - then be sure that that "graph.kryo" file path is accessible to Docker. That's what's nice about ToInputStream from Compose as it allows you to access remote sources.
I'm trying to process large amount of data using Python and maintaining processing status in MySQL. However, I'm surprised there is no standard connection pool for python-mysql (like HikariCP in Java).
I initially started with PyMySQL, things were great until the program ran for first few hours. After few hours, things started to fail. I was getting lot of errors like:
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' ([Errno 99] Cannot assign requested address)")
Moreover, lot of ports were stuck in TIME_WAIT state because I'm opening and closing connections too frequently because of lack of connection pooling
/d/p/950 ❯❯❯ netstat -nt | wc -l
84752
Per this and this, I tried to set tcp_fin_timeout and ip_local_port_range, but hardly anything improved.
echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout
echo 15000 65000 > /proc/sys/net/ipv4/ip_local_port_range
Then I found out that MySQL provides mysql.connector which comes with pooling functionality. After doing all that performance actually deteriorated. More processes started to get failed. I'm using Python's multiprocessing module to simultaneously run 29 processes(multiprocessing.Pool picked this no by default) on a 24 core machine. Following was the code, of course I was using .my.cnf to pass all the credential to avoid committing them to git :
import mysql.connector
from mysql.connector import pooling
conn_pool = pooling.MySQLConnectionPool(pool_name="mypool1",
pool_size=pooling.CNX_POOL_MAXSIZE,
option_files=MYSQL_CONFIG,
option_groups=MYSQL_GROUP_NODE1,
allow_local_infile=True)
conn = conn_pool.get_connection()
Finally, reverted back to old code. Still using PyMySQL and though errors are less frequent it is still causing a major problem. I looked at SQLAlchemy and couldn't really found much of a documentation around pooling.
I'm wondering how's everyone else dealing with mysql-python connection pooling issue? I really believe there should be something out there so that I don't have to reinvent the wheel.
Any pointers are much appreciated.
DBUtils implements MySQL (and generally claims to support abritrary DB-API 2 compliant database interfaces) user-sized connection pool PooledDB, thead-mapped pool PersistentDB and SteadyDB (see functionality section). The latter should fit your case where multiprocessing.Pool creates worker processes with managed persistent database connection each. It is described as:
DBUtils.SteadyDB is a module implementing "hardened" connections to a database, based on ordinary connections made by any DB-API 2 database module. A "hardened" connection will transparently reopen upon access when it has been closed or the database connection has been lost or when it is used more often than an optional usage limit.
You can use it with PyMySQL like:
import pymysql
from DBUtils.SteadyDB import connect
db = connect(
creator = pymysql, # the rest keyword arguments belong to pymysql
user = 'guest', password = '', database = 'name',
autocommit = True, charset = 'utf8mb4',
cursorclass = pymysql.cursors.DictCursor)
Also see this related question for more examples.
We have been trying to make use of the RabbitMQ Service Bus (v3.3.4) but the central bus keeps crashing. At the moment we are not using any clustering and its hosted on Windows Server 2008 R2. We'd like to isolate the root cause but the below error is the only one we can find. Can anyone shed some light on what; if anything; we can do to find the root cause of this?
Note: There are roughly 20 consumers with roughly the same number of Topic subscriptions. Also, all the clients are .NET 4.5 using the 3.3.4 Rabbit client libraries.
Version=1
EventType=APPCRASH
EventTime=130658038736577295
ReportType=2
Consent=1
ReportIdentifier=7f93ccd8-9cbe-11e4-ae00-000c29c08139
IntegratorReportIdentifier=7f93ccd7-9cbe-11e4-ae00-000c29c08139
Response.type=4
Sig[0].Name=Application Name
Sig[0].Value=erl.exe
Sig[1].Name=Application Version
Sig[1].Value=0.0.0.0
Sig[2].Name=Application Timestamp
Sig[2].Value=5343035d
Sig[3].Name=Fault Module Name
Sig[3].Value=MSVCR100.dll
Sig[4].Name=Fault Module Version
Sig[4].Value=10.0.30319.1
Sig[5].Name=Fault Module Timestamp
Sig[5].Value=4ba220dc
Sig[6].Name=Exception Code
Sig[6].Value=40000015
Sig[7].Name=Exception Offset
Sig[7].Value=00000000000760d9
DynamicSig[1].Name=OS Version
DynamicSig[1].Value=6.1.7600.2.0.0.272.7
DynamicSig[2].Name=Locale ID
DynamicSig[2].Value=1033
DynamicSig[22].Name=Additional Information 1
DynamicSig[22].Value=8d79
DynamicSig[23].Name=Additional Information 2
DynamicSig[23].Value=8d79a00078e92d9c3d5d79d4324254fe
DynamicSig[24].Name=Additional Information 3
DynamicSig[24].Value=9af5
DynamicSig[25].Name=Additional Information 4
DynamicSig[25].Value=9af5b20633c279dbf44b04a614c6a1f6
UI[2]=C:\Program Files\erl6.0\erts-6.0\bin\erl.exe
UI[5]=Check online for a solution (recommended)
UI[6]=Check for a solution later (recommended)
UI[7]=Close
UI[8]=erl.exe stopped working and was closed
UI[9]=A problem caused the application to stop working correctly. Windows will notify you if a solution is available.
UI[10]=&Close
LoadedModule[0]=C:\Program Files\erl6.0\erts-6.0\bin\erl.exe
LoadedModule[1]=C:\Windows\SYSTEM32\ntdll.dll
LoadedModule[2]=C:\Windows\system32\kernel32.dll
LoadedModule[3]=C:\Windows\system32\KERNELBASE.dll
LoadedModule[4]=C:\Windows\system32\MSVCR100.dll
LoadedModule[5]=C:\Program Files\erl6.0\erts-6.0\bin\erlexec.dll
LoadedModule[6]=C:\Windows\system32\USER32.dll
LoadedModule[7]=C:\Windows\system32\GDI32.dll
LoadedModule[8]=C:\Windows\system32\LPK.dll
LoadedModule[9]=C:\Windows\system32\USP10.dll
LoadedModule[10]=C:\Windows\system32\msvcrt.dll
LoadedModule[11]=C:\Windows\system32\IMM32.DLL
LoadedModule[12]=C:\Windows\system32\MSCTF.dll
LoadedModule[13]=C:\Windows\system32\apphelp.dll
LoadedModule[14]=C:\Program Files\erl6.0\erts-6.0\bin\beam.dll
LoadedModule[15]=C:\Windows\system32\ADVAPI32.dll
LoadedModule[16]=C:\Windows\SYSTEM32\sechost.dll
LoadedModule[17]=C:\Windows\system32\RPCRT4.dll
LoadedModule[18]=C:\Windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7600.16661_none_fa62ad231704eab7\COMCTL32.dll
LoadedModule[19]=C:\Windows\system32\SHLWAPI.dll
LoadedModule[20]=C:\Windows\system32\COMDLG32.dll
LoadedModule[21]=C:\Windows\system32\SHELL32.dll
LoadedModule[22]=C:\Windows\system32\WS2_32.dll
LoadedModule[23]=C:\Windows\system32\NSI.dll
LoadedModule[24]=C:\Windows\system32\IPHLPAPI.DLL
LoadedModule[25]=C:\Windows\system32\WINNSI.DLL
LoadedModule[26]=C:\Windows\system32\mswsock.dll
LoadedModule[27]=C:\Windows\System32\wshtcpip.dll
LoadedModule[28]=C:\Windows\system32\NLAapi.dll
LoadedModule[29]=C:\Windows\system32\DNSAPI.dll
LoadedModule[30]=C:\Windows\System32\winrnr.dll
LoadedModule[31]=C:\Windows\system32\napinsp.dll
LoadedModule[32]=C:\Windows\System32\wship6.dll
FriendlyEventName=Stopped working
ConsentKey=APPCRASH
AppName=erl.exe
AppPath=C:\Program Files\erl6.0\erts-6.0\bin\erl.exe
I have a problem with changing the standard options used by an Axis 1.4 generated web service client code.
We consume a certain web service of a partner who is using the old RPC/Encoded style, which basically means we're not able to go for Axis 2 but are limited to Axis 1.4.
The service client is retrieving data from the remote server through our proxy which actually runs quite nicely.
Our application is deployed as a servlet. The retrieved response of the foreign web service is inserted into a (XML) document we provide to our internal systems/CMS.
But if the external service is not responding - which didn't happen yet but might happen at anytime - we want to degrade nicely and return our produced XML document without the calculated web service information within a resonable time.
The data retrieved is optional (if this specific calculation is missing it isn't a big issue at all).
So I tried to change the timeout settings. I did apply/use all methods and keys I could find in the documentation of axis to alter the connection and socket timeouts by searching the web.
None of these seems to influence the connection timeouts.
Can anyone give me advice how to alter the settings for an axis stub/service/port based on version 1.4?
Here's an example for the several configurations I tried:
MyService service = new MyServiceLocator();
MyServicePort port = null;
try {
port = service.getMyServicePort();
javax.xml.rpc.Stub stub = (javax.xml.rpc.Stub) port;
stub._setProperty("axis.connection.timeout", 10);
stub._setProperty(org.apache.axis.client.Call.CONNECTION_TIMEOUT_PROPERTY, 10);
stub._setProperty(org.apache.axis.components.net.DefaultCommonsHTTPClientProperties.CONNECTION_DEFAULT_CONNECTION_TIMEOUT_KEY, 10);
stub._setProperty(org.apache.axis.components.net.DefaultCommonsHTTPClientProperties.CONNECTION_DEFAULT_SO_TIMEOUT_KEY, 10);
AxisProperties.setProperty("axis.connection.timeout", "10");
AxisProperties.setProperty(org.apache.axis.client.Call.CONNECTION_TIMEOUT_PROPERTY, "10");
AxisProperties.setProperty(org.apache.axis.components.net.DefaultCommonsHTTPClientProperties.CONNECTION_DEFAULT_CONNECTION_TIMEOUT_KEY, "10");
AxisProperties.setProperty(org.apache.axis.components.net.DefaultCommonsHTTPClientProperties.CONNECTION_DEFAULT_SO_TIMEOUT_KEY, "10");
logger.error(AxisProperties.getProperties());
service = new MyClimateServiceLocator();
port = service.getMyServicePort();
}
I assigned the property changes before the generation of the service and after, I set the properties during initialisation, I tried several other timeout keys I found, ...
I think I'm getting mad about that and start to forget what I tried already!
What am I doing wrong? I mean there must be an option, mustn't it?
If I don't find a proper solution I thought about setting up a synchronized thread with a timeout within our code which actually feels quite awkward and somehow silly.
Can you imagine anything else?
Thanks in advance
Jens
axis1.4 java client soap wsdl2java rpc/encoded xml servlet generated alter change setup stub timeout connection socket keys methods
I think it may be a bug, as indicated here:
https://issues.apache.org/jira/browse/AXIS-2493?jql=text%20~%20%22CONNECTION_DEFAULT_CONNECTION_TIMEOUT_KEY%22
Typecast service port object to org.apache.axis.client.Stub.
(i.e)
org.apache.axis.client.Stub stub = (org.apache.axis.client.Stub) port;
Then set all the properties:
stub._setProperty(org.apache.axis.client.Call.CONNECTION_TIMEOUT_PROPERTY, 10);
stub._setProperty(org.apache.axis.components.net.DefaultCommonsHTTPClientProperties.CONNECTION_DEFAULT_CONNECTION_TIMEOUT_KEY, 10);
stub._setProperty(org.apache.axis.components.net.DefaultCommonsHTTPClientProperties.CONNECTION_DEFAULT_SO_TIMEOUT_KEY, 10);