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https://issues.apache.org/jira/browse/AMBARI-4467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13889574#comment-13889574
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John Speidel commented on AMBARI-4467:
--------------------------------------
Thanks again for you feedback Eric.
As Sumit stated, the blueprint spec is focused on the export/import use case
for reproducing existing clusters.
For this use case, it is my opinion that the current mapping works better. By
mapping host group to components, it makes it easier to add hosts by simply
specifying a host group.
This mapping is also what is used in the Savanna OpenStack project which will
be an early consumer of blueprints.
Although I am merging the host_group->component approach, I am still open for
debate as the blueprint is not yet being consumed so it is still a good time to
make changes if we need to.
> Create new /blueprints REST endpoint
> ------------------------------------
>
> Key: AMBARI-4467
> URL: https://issues.apache.org/jira/browse/AMBARI-4467
> Project: Ambari
> Issue Type: New Feature
> Reporter: John Speidel
> Assignee: John Speidel
> Labels: api-addition, blueprints
> Fix For: 1.5.0
>
>
> Create a new /blueprints REST endpoint. This endpoint represents an 'abstract
> blueprint' or 'template' and doesn't contain cluster specific details such
> specific host information.
> This initial jira will be limited to basic blueprint information and will not
> contain configuration elements. These additional elements will be added in
> subsequent patches.
> Available operations are get, create and delete. Update is not supported
> because blueprints are immutable.
> Example of a simple blueprint resource:
> {code}
> {
> "href" : "http://172.18.193.10:8080/api/v1/blueprints/bp1";,
> "host_groups" : [
> {
> "name" : "foo",
> "components" : [
> {
> "name" : "component2"
> },
> {
> "name" : "component1"
> },
> {
> "name" : "component4"
> },
> {
> "name" : "component3"
> }
> ],
> "cardinality" : "2"
> },
> {
> "name" : "bar",
> "components" : [
> {
> "name" : "component5"
> }
> ],
> "cardinality" : "1"
> }
> ],
> "Blueprints" : {
> "blueprint_name" : "bp1",
> "stack_name" : "HDP",
> "stack_version" : "1.3.3"
> }
> }
> {code}
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