I am working on a Notification Service using IBM MQ messaging provider with JBoss eap 6.1 environment. I am successfully able to send messages via MQ JCA provider rar i.e. wmq.jmsra.rar file. However on consumer part my current configuration looks like this
#MessageDriven(
activationConfig = {
#ActivationConfigProperty(propertyName="destinationType", propertyValue="javax.jms.Queue"),
#ActivationConfigProperty(propertyName="destination", propertyValue="F2.QUEUE"),
#ActivationConfigProperty(propertyName="providerAdapterJNDI", propertyValue="java:jboss/jms/TopicFactory"),
#ActivationConfigProperty(propertyName="queueManager", propertyValue="TOPIC.MANAGER"),
#ActivationConfigProperty(propertyName="hostName", propertyValue="10.239.217.242"),
#ActivationConfigProperty(propertyName="userName", propertyValue="root"),
#ActivationConfigProperty(propertyName = "channel", propertyValue = "TOPIC.CHANNEL"),
#ActivationConfigProperty(propertyName = "port", propertyValue = "1422")
})
My problem is that consumer of this service does not want to add any port numbers, hostName, queueManager properties in these beans. Also they do not want to use ejb-jar.xml to externalize these configs. I have researched and found that we can add a domain IBM Message Driven Bean but with no success. Any suggestions on what I can do here to externalize all these configurations ?
EDIT: Adding --> The JCA resource adapter is deployed at consumer end if it makes it any easier.
Thanks
You can actually externalize an MDBs activation spec properties to the server configuration file.
Create the ejb-jar.xml file, but do not put the actual value in the file, use a property placeholder:
<activation-config-property>
<activation-config-property-name>hostName</activation-config-property-name>
<activation-config-property-value>${wmq.host}</activation-config-property-value>
</activation-config-property>
Do this for all of the desired properties.
Ensure that property replacement for Java EE spec files (ejb-jar.xml, in this case) is enabled in the server configuration file:
<subsystem xmlns="urn:jboss:domain:ee:1.2">
<spec-descriptor-property-replacement>true</spec-descriptor-property-replacement>
Then, in the server configuration file, provide values for your properties:
<system-properties>
<property name="wmq.host" value="10.0.0.150"/>
Once your MDBs are packaged, you will not need to change any of the files in the MDB jar - just provide the properties in the server configuration.
you can avoid to add host name, port number and so on in MDB, you just want to define destinationType in MDB, and rest of the thing u can configure in your application server, like Activation Specification, Queues and Queue Connection Factories.
I have done the same thing but i used IBM Websphere Application Server.
Related
I have a .NET Core 3.0 app where am trying to connect to a Azure SQL database using EF Core and Active directory integrated authentication.
I have verified that I have access to this database from my machine as I can connect to it just fine using SQL server management studio and 'Azure Active Directory-Integrated' authentication.
However, when I try to read data in my app (using EF Core), I always get a System.Argument exception with the following statement:
Invalid value for key 'authentication'
Exception details point to the Db connection string.
So, here is my connection string from my dev appsettings.json file:
"ConnectionStrings": {
"MCDB": "Server=tcp:dev-media-center-sql.database.windows.net,1433;Initial
Catalog=MediaCenter;Persist Security Info=False;User
ID={my User ID};MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Authentication=Active Directory Integrated;" },
I have tried hard coding the connection string directly in my code, thinking that there might be a problem with my JSON but I still get the same exception.
Is "Active Directory Integrated" not a valid value for the 'Authentication' keyword? If not, what is it then? I have already tried "ActiveDirectoryIntegrated" (with no spaces) and /"Active Directory Integrated"/ (escaping double quotes) but to no avail.
Thanks
Fike
Here's what did it for me:
If you're using EF Core with package Microsoft.EntityFrameworkCore.SqlServer...
Then be aware:
The Microsoft.Data.SqlClient package ships more frequently than the EF
Core provider. If you would like to take advantage of new features and
bug fixes, you can add a direct package reference to the latest
version of Microsoft.Data.SqlClient.
source: https://learn.microsoft.com/en-us/ef/core/providers/sql-server/?tabs=dotnet-core-cli
That being said 👆, the fix was EASY. Just add the package to your project 👇
upgraded to latest version of Microsoft.Data.SqlClient and the issue is resolved.
Hope this will help someone
This is essentially the same problem discussed in relation to a newer .NET Core version, which was answered as currently unsupported in that version, however I have added a comment where I note that it now works - see EF Core 3.1 using Authentication=Active Directory Integrated
If your only option for connecting to the Azure SQL Database is through Active Directory authentication, and your ADO.NET SqlConnection object is having problems trying to recognize the "Active Directory Integrated" value as the Authentication, you can still use the "Active Directory Password" value if you know the credentials of the user you're using to try to connect to the database. The connection string will be something like this:
"Server=tcp:yourservername.database.windows.net,1433;Initial Catalog=yourdatabasename;Persist Security Info=False;User ID={your_username};Password={your_password};MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=False;Authentication="Active Directory Password";"
That worked for me.
You can use "Authentication=Active Directory Managed Identity" and be sure to set the User ID to the Object(principal)ID of the identity.
Example:
Data Source=dev-westeurope-001.database.windows.net;Initial Catalog=dev-westeurope-001;Authentication=Active Directory Managed Identity;User ID=[PrincipalId];TrustServerCertificate=True;
I have an external MySQL server that's set up and working fine. I created a database connection in Eclipse and can view the database in the Data Source Explorer tab.
Now, I have a servlet that needs to access that database. How do I do it? Is there a way to reference that database connection created in the data source explorer, or do I have to define everything twice?
Also, what's the best way to open the connection? I've got the mysql-connector-java-5.1.11-bin.jar file included, and I've found two methods that work:
MysqlDataSource d = new MysqlDataSource();
d.setUser("user");
d.setPassword("pass");
d.setServerName("hostname.com");
d.setDatabaseName("db");
Connection c = d.getConnection();
and
Connection c = DriverManager.getConnection("jdbc:mysql://hostname.com/db","user","pass");
Neither is optimal, because first of all, they both use hard-coded strings for everything. This is a Java EE web app project, so is there a good place to put connection data? Or is there a way to forgo all that and just use the connection in the data source explorer?
A common practice is to configure this as a DataSource in the servlet container in question. It will provide you connection pooling facilities which will greatly improve performance. Also a common practice is to externalize the raw settings in some configuration file which is been placed in the classpath.
In case you're using Tomcat as servletcontainer, you need to configure the datasource as per its JNDI documentation. You'll see that there are several ways. Easiest way is to create a /META-INF/context.xml in the webcontent of your dynamic web project (to be clear, the /META-INF is at the same level as the /WEB-INF of the webapp) and fill it with something like:
<?xml version="1.0" encoding="UTF-8"?>
<Context>
<Resource
name="jdbc/db" type="javax.sql.DataSource"
maxActive="100" maxIdle="30" maxWait="10000"
url="jdbc:mysql://hostname.com/db"
driverClassName="com.mysql.jdbc.Driver"
username="user" password="pass"
/>
</Context>
This roughly means that Tomcat server should create a datasource with the JNDI name jdbc/db with a maximum of 100 active connections, a maximum of 30 idle connections and a maximum wait time of 10000 milliseconds before a connection should be returned from your application (actually: closed by your application, so your application has 10 seconds time between acquiring the connection and closing the connection). The remnant of the settings should be familiar and self-explaining enough to you; those are the JDBC settings.
Finally in your web project, edit the file /WEB-INF/web.xml to add the following entry:
<resource-env-ref>
<resource-env-ref-name>jdbc/db</resource-env-ref-name>
<resource-env-ref-type>javax.sql.DataSource</resource-env-ref-type>
</resource-env-ref>
This roughly means that the webapplication should use the server-provided datasource with the name jdbc/db.
Then change your connection manager to something like this:
private DataSource dataSource;
public Database(String jndiname) {
try {
dataSource = (DataSource) new InitialContext().lookup("java:comp/env/" + jndiname);
} catch (NamingException e) {
// Handle error that it's not configured in JNDI.
throw new IllegalStateException(jndiname + " is missing in JNDI!", e);
}
}
public Connection getConnection() {
return dataSource.getConnection();
}
..and replace all Class.forName(driver) calls by new Database("jdbc/db") and replace all DriverManager.getConnection() calls by database.getConnection(). You can if necessary obtain the value jdbc/db from some config file (Properties file?).
Alternatively, inject the DataSource via the #Resource annotation inside a container managed artifact, such as a #WebServlet servlet class:
#Resource(name="jdbc/db")
private DataSource dataSource;
That should be it. Just deploy your webapplication with the above changes and run it. Don't forget to place the database JDBC driver in the Tomcat/lib or to add its path to the shared.loader property of Tomcat/conf/catalina.properties, because the responsibility of loading the JDBC driver is now moved from the webapplication to the server. For more hints and other basic JDBC/JNDI examples you may find this article useful as well.
See also:
How to install JDBC driver in Eclipse web project without facing java.lang.ClassNotFoundexception
Where do I have to place the JDBC driver for Tomcat's connection pool?
Is it safe to use a static java.sql.Connection instance in a multithreaded system?
Show JDBC ResultSet in HTML in JSP page using MVC and DAO pattern
How to retrieve and display images from a database in a JSP page?
You could set up a data source in whatever app server you're deploying your WAR to and fetch a reference to it with JNDI. Or you could package your WAR in an EAR and define the data source in the EAR's data-sources.xml file (and fetch a reference to it with JNDI).
I installed the CEP ( Proton ) through the official documentation, https://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/CEP_GE_-_IBM_Proactive_Technology_Online_Installation_and_Administration_Guide
After that, I watched this recommended video to learn more about CEP. https://edu.fiware.org/pluginfile.php/653/mod_resource/content/1/CEP-Tutorial.mp4
But I can't check engine instance state, because appears this error in response:Could not read instance state, message: Error activating jmx proxy:
It seems that JMX is not properly configured.
As described in the installation guide, in the Apache Tomcat users configuration file you need to add manager-jmx role, and add it to the manager user name:
<tomcat-users>
...
<role rolename="manager-jmx" />
<user username="manager" password="manager" roles="manager-gui,manager-status,manager-script,manager-jmx" />
...
</tomcat-users>
You need to enable JMX access on Apache Tomcat, by adding it to CATALINA_OPTS, as described in the installation guide.
You also need to specify the JMX service port in the ProtonAdmin.properties file, as described in the same installation guide.
We are having problems with the exporting of the CEP definition file from the authoring tool to an (external) repository.
In the response preview from the developer tools of the browser we get the following error message:
"HTTP Status 500 - A javax.ws.rs.ext.MessageBodyReader implementation was not found for class org.apache.wink.json4j.JSONArray type and text/html;charset=utf-8 media type. Verify that all entity providers are correctly registered. Add a custom javax.ws.rs.ext.MessageBodyReader provider to handle the type and media type if a JAX-RS entity provider does not currently exist."
How can we make sure we are able to export to an external repository?
Your problem is that the external repository is not available.
Since you didn't mention this, my guess is that you are using the default external repository which is http://localhost:8080/ProtonOnWebServerAdmin/resources/definitions
but don't have a running instance of ProtonOnWebServerAdmin. You have got to have ProtonOnWebServerAdmin running on a Tomcat server on your local machine for it to actually process the request.
If you're using anything else - make sure that repository knows how to handle the request.
I would like to know where are the WebSphere configuration details saved?
Specifically, configuration details that are shown in the Administrative Console (from the web) or from the console using wsadmin.
Some of the examples would be:
Java and Process Management: Class
loader, Process definition, Process
execution
Container Settings:
Session management, SIP Container
Settings, Web Container Settings,
Portlet Container Settings
Are there XML files that persist these configuration details?
Nicholas
WebSphere Application Server configuration data is stored in XMI format in the profile configuration repository.
The settings you referred to are stored in server.xml
${PROFILE_HOME}/config/cells/${CELL}/nodes/${NODE}/servers/${SERVER}/server.xml
Along with server.xml # ${PROFILE_HOME}/config/cells/${CELL}/nodes/${NODE}/servers/${SERVER}/server.xml, there are other files too which save more data as below:
resources.xml at the same path. This file has all the resources information saved.
variables.xml at the same path. This file saves the variables used in places like DB drivers etc.
Also, there are other important file mentioned here - https://websphereapplicationservernotes.wordpress.com/2012/12/13/websphere-application-server-important-files/
As the URLs get obsolete these days, I am pasting the content here too:
CELL-scope
• admin-authz.xml
Contains the roles set for administration of the Admin console.
/appsrv01/config/cells//
• profileRegistry.xml
Contains a list of profiles and profile configuration data
• resources.xml
Defines operating cell scope environmental resources, including JDBC, JMS, JavaMail, URL end point configuration, and so on.
• security.xml
Contains security data , including all user ID and password information.
• virtualhosts.xml
Contains virtual host and Multipurpose Internet Mail Extensions (MIME)-type configurations.
• variables.xml
Contains cell level WebSphere variables
• wimconfig.xml
Contains the federated repository configurations for global security
/config/cells//wim/config/
NODE-scope
• namestore.xml
Provides persistent JNDI namespace binding data
• resources.xml
Defines node scope environmental resources, including JDBC, JMS, JavaMail, URL end point configuration, and so on
• serverindex.xml
Specifies all the ports used by servers on this node
• variables.xml
Contains node level WebSphere variables
SERVER-scope
• resources.xml
Contains the configuration of resources, such as, JDBC, JMS, JavaMail, and URL end points at server scope
• server.xml
Contains application server configuration data
• variables.xml
Contains server level variables