From 53d25cc90eb47e7529ac0b3f43fb927f2b5003a8 Mon Sep 17 00:00:00 2001
From: Rohit Jnagal <jnagal@google.com>
Date: Fri, 13 Mar 2015 21:00:38 +0000
Subject: [PATCH] Add alias and namespace information to /spec endpoint

---
 api/versions.go      | 23 +----------------------
 info/v2/container.go |  8 ++++++++
 manager/manager.go   | 34 +++++++++++++++++++++++++++++-----
 3 files changed, 38 insertions(+), 27 deletions(-)

diff --git a/api/versions.go b/api/versions.go
index 448127e8..710e2f4e 100644
--- a/api/versions.go
+++ b/api/versions.go
@@ -368,8 +368,7 @@ func (self *version2_0) HandleRequest(requestType string, request []string, m ma
 		if err != nil {
 			return err
 		}
-		specV2 := convertSpec(spec)
-		return writeResult(specV2, w)
+		return writeResult(spec, w)
 	case storageApi:
 		var err error
 		fi := []v2.FsInfo{}
@@ -393,26 +392,6 @@ func (self *version2_0) HandleRequest(requestType string, request []string, m ma
 	}
 }
 
-// Convert container spec from v1 to v2.
-func convertSpec(specV1 info.ContainerSpec) v2.ContainerSpec {
-	specV2 := v2.ContainerSpec{
-		CreationTime: specV1.CreationTime,
-		HasCpu:       specV1.HasCpu,
-		HasMemory:    specV1.HasMemory,
-	}
-	if specV1.HasCpu {
-		specV2.Cpu.Limit = specV1.Cpu.Limit
-		specV2.Cpu.MaxLimit = specV1.Cpu.MaxLimit
-		specV2.Cpu.Mask = specV1.Cpu.Mask
-	}
-	if specV1.HasMemory {
-		specV2.Memory.Limit = specV1.Memory.Limit
-		specV2.Memory.Reservation = specV1.Memory.Reservation
-		specV2.Memory.SwapLimit = specV1.Memory.SwapLimit
-	}
-	return specV2
-}
-
 func convertStats(cont *info.ContainerInfo) []v2.ContainerStats {
 	stats := []v2.ContainerStats{}
 	for _, val := range cont.Stats {
diff --git a/info/v2/container.go b/info/v2/container.go
index c3c6eb68..03a806cc 100644
--- a/info/v2/container.go
+++ b/info/v2/container.go
@@ -51,6 +51,14 @@ type ContainerSpec struct {
 	// Time at which the container was created.
 	CreationTime time.Time `json:"creation_time,omitempty"`
 
+	// Other names by which the container is known within a certain namespace.
+	// This is unique within that namespace.
+	Aliases []string `json:"aliases,omitempty"`
+
+	// Namespace under which the aliases of a container are unique.
+	// An example of a namespace is "docker" for Docker containers.
+	Namespace string `json:"namespace,omitempty"`
+
 	HasCpu bool    `json:"has_cpu"`
 	Cpu    CpuSpec `json:"cpu,omitempty"`
 
diff --git a/manager/manager.go b/manager/manager.go
index b35a622e..47abf7a1 100644
--- a/manager/manager.go
+++ b/manager/manager.go
@@ -64,7 +64,7 @@ type Manager interface {
 	DockerContainer(dockerName string, query *info.ContainerInfoRequest) (info.ContainerInfo, error)
 
 	// Gets spec for a container.
-	GetContainerSpec(containerName string) (info.ContainerSpec, error)
+	GetContainerSpec(containerName string) (v2.ContainerSpec, error)
 
 	// Get derived stats for a container.
 	GetContainerDerivedStats(containerName string) (v2.DerivedStats, error)
@@ -290,16 +290,40 @@ func (self *manager) getContainerData(containerName string) (*containerData, err
 	return cont, nil
 }
 
-func (self *manager) GetContainerSpec(containerName string) (info.ContainerSpec, error) {
+func (self *manager) GetContainerSpec(containerName string) (v2.ContainerSpec, error) {
 	cont, err := self.getContainerData(containerName)
 	if err != nil {
-		return info.ContainerSpec{}, err
+		return v2.ContainerSpec{}, err
 	}
 	cinfo, err := cont.GetInfo()
 	if err != nil {
-		return info.ContainerSpec{}, err
+		return v2.ContainerSpec{}, err
 	}
-	return self.getAdjustedSpec(cinfo), nil
+	spec := self.getV2Spec(cinfo)
+	return spec, nil
+}
+
+// Get V2 container spec from v1 container info.
+func (self *manager) getV2Spec(cinfo *containerInfo) v2.ContainerSpec {
+	specV1 := self.getAdjustedSpec(cinfo)
+	specV2 := v2.ContainerSpec{
+		CreationTime: specV1.CreationTime,
+		HasCpu:       specV1.HasCpu,
+		HasMemory:    specV1.HasMemory,
+	}
+	if specV1.HasCpu {
+		specV2.Cpu.Limit = specV1.Cpu.Limit
+		specV2.Cpu.MaxLimit = specV1.Cpu.MaxLimit
+		specV2.Cpu.Mask = specV1.Cpu.Mask
+	}
+	if specV1.HasMemory {
+		specV2.Memory.Limit = specV1.Memory.Limit
+		specV2.Memory.Reservation = specV1.Memory.Reservation
+		specV2.Memory.SwapLimit = specV1.Memory.SwapLimit
+	}
+	specV2.Aliases = cinfo.Aliases
+	specV2.Namespace = cinfo.Namespace
+	return specV2
 }
 
 func (self *manager) getAdjustedSpec(cinfo *containerInfo) info.ContainerSpec {