I'm trying to understand OSB and i have the situation shown in figure.
JMSProducer is a Business Service that produce a message (request) that is put in RequestQueue
JMSConsumer is a proxy consume the message request
JMSReplyProducer is a Business Service JMSReplyProducer generate a response
JMSReplyConsumer is a proxy that consume the response.
I have problem to set the flow. I'm using OEPE to setup the Oracle Service BUS. I've already create a JMSProducer that send a request to JMSconsume and I let
JMSConsumer to consume the request. In JMSConsumer i have a pipeline pair and in the request pipeline a node stage with a log.
I don't understand, as shown in Figure, how to put in comunication the JMSConsumer with JMSReplyProducer and let JMSReplyCOnsume to consume the response.
Set up the queues first
The OSB cluster on the left has a proxy service (represented by the circle at the top left)
That proxy routes to a JMS-transport business service with URL pointing to RequestQueue, and Is Response Required checked, and using the default correlation ID to pull from ResponseQueue
On the cluster on the right, create a JMS-transport proxy that reads from RequestQueue, has Is Response Required checked, and outputs back to ResponseQueue. You can then fill out that proxy to do whatever you want.
Related
I have implemented an EnvoyFilter for one of my services by following this sample. Now I want to implement a similar one, but it is for a service that is out of my control.
The current request flow is like this:
browser sends a request
istio ingress receives the request
the request is routed to the 3rd party service in the cluster but does not have a istio-proxy sidecar
I need to inject some headers at step 3 before routing the request to the other services. The header content is dynamic, and I need to make some HTTP requests to get the content.
Is there a filter that can do this? Or is it simply impossible with Istio?
Thanks
RequestClients in my ApiGateway are injected (using default MS DI) in HTTP request handlers (in those handlers I have access to current request scope). What I want is to automatically, for each RequestClient, to add custom message header where I could put some data from request scope. Use case is to take JWT from request and add it to message as custom header. Then on consumer side I need, for each received request, check that custom header, verify JWT, and add some data from it to consumed request scope so I could access for example IUserContext or something like that. I want to avoid manually adding jwt to message contract for example.
How I can configure MassTransit on Client and Consumer side to achieve what I want? I already read docs about middleware and pipes and observers but still I can't figure it out...
Using RabbitMQ transport.
So, this is pretty complicated to put into a post, so I created a complete sample that shows how to use MassTransit Scoped Filters.
In this sample, an action filter is registered with the controllers to automatically extract the Token header and store it so that it can be used when publishing or sending messages from a controller. The MassTransit filters are configured on the bus, so they're available to all receive endpoints.
We know the difference between POST and GET, but why should a client state the method type when issuing http requests? Why should it make a difference for the server? in the end, it is the server job to deal with those requests according to their URL and Content. either by redirecting, blocking or accepting and using data (existing in the URL or request body).
An endpoint can accept both GET and POST requests (along with PUT, PATCH and DELETE). If the client does not explicitly state what type of request they are sending, the server will interpret it as a GET request (the default).
Consider the following PHP example, sitting on https://api.example.com/resources/:
<?php
if ($_POST["request"]) {
// Create new resource
}
else if ($_GET["request"]) {
// List existing resources
}
In both instances, the request parameter is sent to the same page, and different logic is run based on what the method is. But considering the same data is sent to the same page in both instances, the server wouldn't know which one of the two conditions to step into if the client doesn't explicitly specify the method.
In RESTful programming, both the client and server have been programmed to understand the request, but the client has no knowledge of the server itself. It is up to the server to process the request, based off of what the client asks it to do. And the client asks it to do different things by specifying the method.
North Bound Client can send only SOAP Request , while SOUTH Bound can Only accept REST Request and send Response as only REST
Is there any policy in apigee to convert REST to SOAP and vice versa
Please explain how to convert otherwise
When creating a new API proxy, you can use an existing WSDL to create a REST to SOAP mapping to your backend service. Hopefully that does what you are looking for.
Use Assign Message Policy.
For example:
North Bound Client SOAP Request -> Assign Message Policy To Create REST Request Payload -> South Bound Client REST Request
For more details on Assign Message policy, can refer to https://docs.apigee.com/api-platform/reference/policies/assign-message-policy.
I have designed an itinerary as below:
Receive a request
Transform the request
Send the transformed message to service1 and get a response
It works Perfectly, but I want to invoke another service for the same request.
Where should I do the second transformation and service invocation?