state/api: implement APIHostPorts methods

state/api/params/internal.go

 // Copyright 2013 Canonical Ltd.
 // Licensed under the AGPLv3, see LICENCE file for details.
 
 package params
 
 import (
         "time"
 
         "launchpad.net/juju-core/constraints"
         "launchpad.net/juju-core/instance"
@@ skipping 164 matching lines @@
 // ConfigSettingsResults holds multiple configuration maps or errors.
 type ConfigSettingsResults struct {
         Results []ConfigSettingsResult
 }
 
 // EnvironConfig holds an environment configuration.
 type EnvironConfig map[string]interface{}
 
 // EnvironConfigResult holds environment configuration or an error.
 type EnvironConfigResult struct {
-        Error  *Error
         Config EnvironConfig
 }
 
 // RelationUnit holds a relation and a unit tag.
 type RelationUnit struct {
         Relation string
         Unit     string
 }
 
 // RelationUnits holds the parameters for API calls expecting a pair
@@ skipping 322 matching lines @@
 
 // RunResult contains the result from an individual run call on a machine.
 // UnitId is populated if the command was run inside the unit context.
 type RunResult struct {
         exec.ExecResponse
         MachineId string
         UnitId    string
         Error     string
 }
 
-// RunResults is used to return the slice of results.  Api server side calls
+// RunResults is used to return the slice of results.  API server side calls
 // need to return single structure values.
 type RunResults struct {
         Results []RunResult
 }
+
+// APIHostPortsResult holds the result of an APIHostPorts
+// call. Each element in the top level slice holds
+// the addresses for one API server.
+type APIHostPortsResult struct {
+        Servers [][]instance.HostPort
+}