[HELIX-98] clean up setting constraint api

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.7.0-incubating
• Component/s: helix-core, helix-webapp-admin
• Sprint: Sprint #3 9/9 - 10/1, Sprint #4 10/2 - 10/16
• Assignee: Kanak Biscuitwala
• Reporter: Zhen Zhang
• Created: 21/May/13 21:56
• Updated: 13/Nov/13 04:50
• Resolved: 18/Sep/13 19:46

Description

currently setting constraint is doing through the following api:
1) constraint builder
builder.addConstraintAttribute(key1, value1).addConstraintAttribute(key2, value2)....

2) add constraint to cluster
admin.addConstraint(clusterName, constraintType, constraintId, constraint)

will be better to have:
1) builder(id).forMsgType(msgType).forInstance(instanceName).setConstraint(contraintValue)
2) add constraint to cluster
admin.addMsgConstraint(clusterName, constraint)