Ok, maybe title can not say my question clear ...... following is the details.
I've written a subagent by net-snmp APIs. It works well for processing get request,
but for a getnext request, it responses 2 times.
example:
there are 3 scalars in my mib file, whose names are : var_1, var_2, var_3
now, I send a `get-next` request of var_1`s oid for getting var_2`s value
with mib-browser.and in the subagent, a function named `handle_var_2` was
defined for processing request of `var_2`, and in the function,
i can capture 2 `get` request in 'MODE_GET'.
Why does this occured ? Thank you everyone!
Related
I am trying to send data to Devo with HTTP requests. The request works and 204 status is received. I am following Devo docs where this method is explained.
I can search the data in Devo but it is contained in unknown.unknown table. What am I doing wrong?
http://http-us.logtrust.io/event/MY_DOMAIN/token!MY_TOKEN/local1/XXXX.test.example?hello_world_message
Previously I created the token with target table: XXXX.test.* (where XXXX is the name of the project).
After spending some time I found the answer in one of the Devo docs:
https://docs.devo.com/confluence/ndt/supported-technologies/special-devo-tags-and-data-tables
The problem was I was using "XXXX.test" as tag when first and second positions of the tags define the technology to parse the data. In this case, it is a custom application so it is necessary to use "my.app".
Before execute request it was necessary to create a new token for the new tags to use: "my.app.test.*"
Now I can visualize the data in Devo.
I have some problems with a following route:
// from("cxf:....")...
from("direct:start").process(startRequestProcessor) // STEP 1
.choice()
.when(body().isNull())
.to("direct:finish")
.otherwise()
.split(body()) // STEP 2
.bean(TypeMapper.class) // STEP 3
.log("Goes to DynamicRouter:: routeByTypeHeader with header: ${headers.type}")
.recipientList().method(Endpoint1DynamicRouter.class, "routeByTypeHeader") // STEP 4
.ignoreInvalidEndpoints();
from("direct:endpoint2") // STEP 6
.log("Goes to DynamicRouter::routeByCollectionHeader with header: ${headers.collection}")
.recipientList().method(Endpoint2DynamicRouter.class, "routeByCollectionHeader")
.ignoreInvalidEndpoints();
from("direct:endpoint1.1") // STEP 5
.process(new DateRangeProcessor())
.to("direct:collections");
from("direct:endpoint1.2") // STEP 5
.process(new SingleProcessor())
.to("direct:collections");
from("direct:endpoint2.2") // STEP 7
.aggregate(header("collection" /** endpoint2.2 */), CollectionAggregationStrategy)
.completionSize(exchangeProperty("endpoint22"))
.process(new QueryBuilderProcessor())
.bean(MyService, "getDbCriteria")
.setHeader("collection", constant("endpoint2.1"))
.to("direct:endpoint2.1").end();
from("direct:endpoint2.1") // STEP 8
.aggregate(header("collection" /** endpoint2.1 */), CollectionAggregationStrategy)
.completionSize(exchangeProperty("CamelSplitSize"))
.to("direct:finish").end();
from("direct:finish")
.process(new QueryBuilderProcessor())
.bean(MyRepository, "findAll")
.log("ResponseData: ${body}").
marshal().json(JsonLibrary.Gson).end();
The route
Receives json string an converts it to list (HashSet) of JSONObjects.
split the received list to json objects.
Set corresponding headers according to object content
Routes the messages according to headers to endpoint1.1 or endpoint1.2
Convert messages to mongodb Criteria and send to endpoint2
Endpoint2 routes messages according to another header to endpoint2.1 or endpoint2.2.
Endpoint2.2 aggregates all received messages, processes it to get mongodb Criteria and sends it to endpoint2.1 (completionSize is calculated at step 2 and saved in property "endpoint22").
Enpoint2.1 aggregates ALL messages (CamelSplitSize) converts aggregated messages to Query object and sends it to Repository to retrieve the data.
I can see valid response object in debugger but anyway I get an error:
No message body writer has been found for class java.util.HashSet, ContentType: application/json
The problem is not in response object as it works with other routes and it does not contain HashSets.
My guess is that route sends to the output the HashSet created tat STEP 1...
My questions are:
what is wrong in the route output?
both recipientList() try to forward
messages to invalid endpoint ( I have to use .ignoreInvalidEndpoints() to avoid exception):
org.apache.camel.NoSuchEndpointException: No endpoint could be found for:
org.springframework.data.mongodb.core.query.Criteria#20f55e70, please
check your classpath contains the needed Camel component jar.
Any help would be much appreciated!
Thanks.
I find it very strange, but .aggregate() function does not reply exchange. It uses you aggregation strategy but always reply incoming exchange. This is not clear when reading documentation, but you have to use aggregation strategy along with split() to be able to return exchange.
I am using Restangular in one of my works
The server guys have give me the following calls which i need to integrate on the AngularJS client
PUT api/partners/password – RequestPayload[{password,confirmpassword}]
partner id is being sent in the header
GET api/partners/password/forgot/ - Request Payload [{emailaddress}]
partner id is being sent in the header
The javascript code that I have written to call these services is as follow
Restangular.all('Partners').one('Password').put(params); - sends params as query string
Restangular.all('Partners').one('Password').one('Forgot').get(params); - sends object in the url
I have tried other ways but it simply doesn't make the correct call.
Help me out guys!
So, for point #1. it puts the object at hand, not another object. So you have 2 options:
Option 1
var passReq = Restangular.all('Partners').one('Password');
passReq.confirmPassword = ....
passReq.put(); // confirmPassword and the params of the object will be sent
Option 2 is
var passReq = Restangular.all('Partners').one('Password').customPUT(obj);
For Point #2, you cannot send a request body (payload) in the GET unfortunately.
I would like to achieve the following kind of orchestration with CAMEL:
Client sends a HTTP POST request to CAMEL
CAMEL sends HTTP POST request to external endpoint (server)
External server replies with a 200 OK
CAMEL sends HTTP GET request to external endpoint (server)
External server replies
After step 5, I want to check the reply: if the reply is a 200 OK and state = INPROGRESS (this state can be retrieved from the received XML body), I want to re-transmit the HTTP GET to the external endpoint until the state is different from INPROGRESS.
I was thinking to use the retryWhile statement, but I am not sure how to build the routine within the route.
Eg, for checking whether the reply is a 200 OK and state = INPROGRESS, I can easily introduce a Predicate. So the retryWhile already becomes like:
.retryWhile(Is200OKandINPROGRESS)
but where should I place it in the route so that the HTTP GET will be re-transmitted ?
Eg: (only taking step 4 and 5 into account)
from("...")
// here format the message to be sent out
.to("external_server")
// what code should I write here ??
// something like:
// .onException(alwaysDo.class)
// .retryWhile(Is200OKandINPROGRESS)
// .delay(2000)
// .end ()
// or maybe it should not be here ??
I am also a bit confused how the "alwaysDo.class" should look like ??
Or ... should I use something completely different to solve this orchestration ?
(I just want to re-transmit as long as I get a 200 OK with INPROGRESS state ...)
Thanks in advance for your help.
On CAMEL Nabble, someone replied my question. Check out:
http://camel.465427.n5.nabble.com/Camel-Apache-can-I-use-a-retryWhile-to-re-send-a-request-td5498382.html
By using a loop statement, I could re-transmit the HTTP GET request until I received a state different from INPROGRESS. The check on the state needs to be put inside the loop statement using a choice statement. So something like:
.loop(60)
.choice()
.when(not(Is200OKandINPROGRESS)).stop() // if state is not INPROGRESS, then stop the loop
.end() // choice
.log("Received an INPROGRESS reply on QueryTransaction ... retrying in 5 seconds")
.delay(5000)
.to(httpendpoint")
.end() //loop
I never experimented what you are trying to do but it seems does not seem right.
In the code you are showing, the retry will only occur when an alwaysDo Exception is thrown.
The alwaysDo.class you are refering to should be the name of the Java Exception class you are expecting to handle. See http://camel.apache.org/exception-clause.html for more details.
The idea should be to make the call and inspect the response content then do a CBR based on the state attribute. Either call the GET again or terminate/continue the route.
You probably should write a message to the Apache Camel mailing list (or via Nabble) . Commiters are watching it and are very reactive.
I would like to obtain the following kind of routing:
HTTP POST message with XML body enters CAMEL
I store some of the parameters of the XML body
The message is routed to an external endpoint
The external endpoint (external server) replies
-> at this moment, I would like to check whether the reply from the external endpoint is a HTTP 200 OK containing a XML parameter equal to SUCCESS.
-> if so, then I would like to use some of the stored parameters to construct a new HTTP message (method = PUT this time) and send it out to an external endpoint
Problem that I am currently having, is the following:
.choice()
.when(simple("${in.headers.CamelHttpResponseCode} == 200"))
// now I want do a few things, eg: check also the XML body via xpath
// and change the message to be sent out (change Method to PUT, ...)
.to("http://myserver.com")
.otherwise()
// if no 200 OK, I want the route to be stopped ... not sure how ?
.end()
Question: any idea how to add those extra statements in case the HTTP response code was 200 OK ? It looks like the when does not allow me to add extra statements ...
(I got an error in my Eclipse IDE).
Thanks in advance.
Note: could it be that I have to route the message in case the 200 OK matches to a 'new endpoint' and then create a new from route with this new endpoint ?
Eg:
.choice()
.when(simple("${in.headers.CamelHttpResponseCode} == 200"))
.to("mynewendpoint")
.otherwise()
// if no 200 OK, I want the route to be stopped ... not sure how ?
.end();
from("mynewendpoint").
.setHeader(etc etc)
.to("http://myserver.com")
In this latter case, how exactly should I define this 'newendpoint' ?
In the programming language DSLs such as Java, you can build predicates together. I posted a blog entry some years ago about this at: http://davsclaus.blogspot.com/2009/02/apache-camel-and-using-compound.html
For example having two predicates
Predicate p1 = header("hl7.msh.messageType").isEqualTo("ORM"):
Predicate p2 = header("hl7.msh.triggerEvent").isEqualTo("001");
You can chain them together, using and or or.
Predicate isOrm = PredicateBuilder.and(p1, p2);
And then you can use isOrm in the route
from("hl7listener")
.unmarshal(hl7format)
.choice()
.when(isOrm).beanRef("hl7handler", "handleORM")
.otherwise().beanRef("hl7handler", "badMessage")
.end()
.marshal(hl7format);
yep, you can have multiple statements between the .when() and .otherwise() and you can always call .endChoice() to explicitly end each conditional block...
to your other question, you can use camel-direct to chain together multiple routes, etc...