[RM] Creation of Baseline in Non-GC RM Project using OSLC

Chandan M B

(113●1●41●84) Jul 20 '22, 7:54 a.m.

Hello,

I am looking for some examples to create baseline for non-GC projects of DNG PA.

I read this : https://jazz.net/forum/questions/249582/is-there-a-rest-api-for-dng-to-create-a-local-streamcomponent-and-baseline

Tried for Baseline : Response is 202 Accepted.

But Baseline was not created. Any leads here ?

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David Honey

FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER (1.8k●1●7) Jul 20 '22, 10:50 a.m.

POST to what URI? You cannot POST to the stream.
You can only create a baseline by POSTing to the baseline's LDPC of the stream.

See https://docs.oasis-open-projects.org/oslc-op/config/v1.0/psd01/config-resources.html#shape-stream.

So the sequence would be:

GET the stream
Extract the URI of the baselines LDPC.
Take the RDF from the GET, replace the title and description, remove any rdf:type of oslc_config:Stream , add rdf:type of oslc_config:Baseline . You may also need to add prov:wasDerivedFrom to reference the stream URI. The important point here is that you have to POST RDF content that is a valid baseline, including any mandatory properties.POSTing just a title and description may be insufficient.
POST that RDF to the baselines LDPC URI from step 2.
For a 202 response, look at the Location header to get the URI of a oslc_config:Activity .
Poll that activity with GETs until it is completed. Then look at the information in the completed activity.

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Chandan M B

Jul 21 '22, 6:05 a.m.

URI : https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w/baselines

Body

<oslc_config:Baseline>

<dcterms:description>Description</dcterms:description>

<dcterms:title rdf:parseType="Literal">Power BI - example Initial Stream</dcterms:title>

<prov:wasDerivedFrom rdf:resource="https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w" />

</oslc_config:Baseline>

Even though Response is 202 and GET on location header

Response os Not found on activity.

David Honey

FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER Jul 21 '22, 6:12 a.m.

What headers are you including in the POST?
The body shown doesn't look like valid RDF/XML
You can use the RDF validator at http://rdfvalidator.mybluemix.net/ to check that your POST body is valid RDF.

If you want people to help you with REST APIs, as Ralph commented, show the full details of the request (URI, headers and body), and of the response (headers and body).

The GCM application uses POST requests to stream's baselines LDPC for both DOORS Next and ETM, and this works fine.

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Ralph Schoon

FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER (63.9k●3●36●48) Jul 20 '22, 8:12 a.m.

If you have API questions, provide the details of what you have done. Request, URI, headers. Do not expect the forum users to assume stuff from references to other posts. If you are not willing to spend the time creating a useful question, do not hope for a useful answer.

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Chandan M B

Jul 20 '22, 8:47 a.m.

Sorry Ralph. Please find the details below

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Chandan M B

(113●1●41●84) Jul 20 '22, 8:46 a.m.

URI : https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w/baselines

Headers :

Accept : application/rdf+xml

OSLC-Core-Version : 2.0

Content-Type : application/rdf+xml

X-Jazz-CSRF-Prevent : JSessionID

Body

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:oslc="http://open-services.net/ns/core#" xmlns:oslc_config="http://open-services.net/ns/config#" xmlns:j.0="http://jazz.net/ns/rm/dng/config#"

xmlns:acc="http://open-services.net/ns/core/acc#" xmlns:process="http://jazz.net/ns/process#">

<oslc_config:Baseline>

<dcterms:title rdf:parseType="Literal">Create Via OSLC</dcterms:title>

<dcterms:description rdf:parseType="Literal">Test description</dcterms:description>

</oslc_config:Baseline>

</rdf:RDF>

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David Honey

FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER (1.8k●1●7) Jul 20 '22, 9:14 a.m.

202 Accepted is the expected response since it is a long running operation.
See https://docs.oasis-open-projects.org/oslc-op/config/v1.0/psd01/config-resources.html#longoperations for further information.

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Chandan M B

Jul 20 '22, 10:13 a.m.

I tried to doing a get on content location for an activity.

Exception is

<oslc_config:Activity rdf:about="https://xxx/rm/taskTracker/0bb1b38e-4ef8-449a-b06f-8a6d9b8c4b96">

<dcterms:title rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Create Child Configuration Task</dcterms:title>

<oslc_auto:state rdf:resource="http://open-services.net/ns/auto#complete" />

<dcterms:references>

<oslc:Error>

<oslc:statusCode>0</oslc:statusCode>

<oslc:message>Unexpected exception while executing task</oslc:message>

</oslc:Error>

</dcterms:references>

<oslc_auto:verdict rdf:resource="http://open-services.net/ns/auto#error" />

</oslc_config:Activity>

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David Honey

FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER (1.8k●1●7) Jul 20 '22, 9:27 a.m.

Your POST body is very sparse. Try doing a GET on the stream you want to create a baseline from, and using the RDF from that with changes to the RDF types, title, description and POST that modified content.

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Chandan M B

Jul 20 '22, 10:20 a.m.

Did the get and performed the POST Operation. Its stating method not allowed 405

xmlns:acc="http://open-services.net/ns/core/acc#" xmlns:process="http://jazz.net/ns/process#">

<oslc_config:Baseline rdf:about="https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w">

<dcterms:description>Description</dcterms:description>

<dcterms:title rdf:parseType="Literal">Power BI - example Initial Stream</dcterms:title>

</oslc_config:Baseline>

</rdf:RDF>

Chandan M B

Jul 21 '22, 6:51 a.m.

Still not successful

URI : https://xxxrm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w/baselines

Body

<oslc_config:Baseline>

<dcterms:description>Description</dcterms:description>

<dcterms:title rdf:parseType="Literal">Power BI - example Initial Stream</dcterms:title>

<prov:wasDerivedFrom rdf:resource="https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w" />

</oslc_config:Baseline>

</rdf:RDF>

Performing GET on location header leads to "Not Found"

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David Honey

FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER (1.8k●1●7) edited

Jul 21 '22, 7:02 a.m.

@Chandan I'm not going to respond to any more posts on this topic until you include the following information:

The request URI
The request headers
The request body
The response headers
The response body

As per my previous comment, your POST body isn't valid RDF.
But until you provide the above details, it's unlikely anyone is going to help you further.

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Chandan M B

(113●1●41●84) Jul 21 '22, 7:36 a.m.

POST

URI : https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w/baselines

Headers : Accept : application/rdf+xml

OSLC-Core-Version : 2.0

Content-Type : application/rdf+xml

X-Jazz-CSRF-Prevent : JSessionID

Body

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:oslc="http://open-services.net/ns/core#" xmlns:prov="http://www.w3.org/ns/prov#" xmlns:oslc_config="http://open-services.net/ns/config#" xmlns:ldp="http://www.w3.org/ns/ldp#"

xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:acc="http://open-services.net/ns/core/acc#" xmlns:process="http://jazz.net/ns/process#">

<oslc_config:Baseline>

<dcterms:description>Description</dcterms:description>

<dcterms:title rdf:parseType="Literal">Power BI - example Initial Stream</dcterms:title>

<prov:wasDerivedFrom rdf:resource="https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w" />

</oslc_config:Baseline>

</rdf:RDF>

Response :

Status Code : 202 Accepted

location : https://xxx/rm/taskTracker/04320cef-b45f-403c-8822-d265fee8f5e6

GET

URI : https://elm01.sva.expert/rm/taskTracker/04320cef-b45f-403c-8822-d265fee8f5e6

Headers : Accept : application/rdf+xml

OSLC-Core-Version : 2.0

Response

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:err="http://jazz.net/xmlns/prod/jazz/foundation/1.0/">

<rdf:Description>

<err:detailedMessage rdf:datatype="http://www.w3.org/2001/XMLSchema#string">com.ibm.rdm.fronting.server.exception.NotFoundException</err:detailedMessage>

<err:errorMessage rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Not found</err:errorMessage>

<err:errorStatus rdf:datatype="http://www.w3.org/2001/XMLSchema#long">404</err:errorStatus>

</rdf:Description>

</rdf:RDF>

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@prefix acc:   <http://open-services.net/ns/core/acc#> .
@prefix process: <http://jazz.net/ns/process#> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix ldp:   <http://www.w3.org/ns/ldp#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix oslc_config: <http://open-services.net/ns/config#> .
@prefix prov:  <http://www.w3.org/ns/prov#> .
@prefix oslc:  <http://open-services.net/ns/core#> .
[ a                    oslc_config:Baseline ;
  dcterms:description  "Description" ;
  dcterms:title        "Power BI - example Initial Stream"^^rdf:XMLLiteral ;
  prov:wasDerivedFrom  <https://xxx/rm/cm/stream/_ovO15tKLEeuaG5VmJAdw1w>
] .

In essence, the subject is a blank node. As Ralph suggests, try a proper URI for the suibject.

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Question asked: Jul 20 '22, 7:54 a.m.

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Last updated: Jul 21 '22, 10:20 a.m.

[RM] Creation of Baseline in Non-GC RM Project using OSLC

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