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https://issues.apache.org/jira/browse/AMBARI-4467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13888482#comment-13888482
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Eric Yang commented on AMBARI-4467:
-----------------------------------
The proposed hierarchy is blueprint > host-group > components. In the first
given example, a blueprint would contain:
A host group contains a list of components. What if a service that are
composed of multiple host groups, e.g. gateway, master-hosts, and computes.
Each host-group defines the requirement of hadoop-client component, hdfs
component, and job tracker components, datanode component, task tracker
component.
component seems to be more repetitive in host-group than alternate structure:
blueprint > components > host-group > role
The component definition is associated with the service function. e.g. HDFS is
a component, and master hosts is a kind of host-group, name node is one of the
role in master host group.
> 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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