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tmdsstate.go
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tmdsstate.go
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// Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may
// not use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file is distributed
// on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language governing
// permissions and limitations under the License.
package v4
import (
"fmt"
"github.com/aws/amazon-ecs-agent/agent/engine/dockerstate"
"github.com/aws/amazon-ecs-agent/agent/stats"
"github.com/aws/amazon-ecs-agent/ecs-agent/api/ecs"
"github.com/aws/amazon-ecs-agent/ecs-agent/logger"
"github.com/aws/amazon-ecs-agent/ecs-agent/logger/field"
tmdsv4 "github.com/aws/amazon-ecs-agent/ecs-agent/tmds/handlers/v4/state"
)
// Implements AgentState interface for TMDS v4.
type TMDSAgentState struct {
state dockerstate.TaskEngineState
statsEngine stats.Engine
ecsClient ecs.ECSClient
cluster string
availabilityZone string
vpcID string
containerInstanceARN string
}
func NewTMDSAgentState(
state dockerstate.TaskEngineState,
statsEngine stats.Engine,
ecsClient ecs.ECSClient,
cluster string,
availabilityZone string,
vpcID string,
containerInstanceARN string,
) *TMDSAgentState {
return &TMDSAgentState{
state: state,
statsEngine: statsEngine,
ecsClient: ecsClient,
cluster: cluster,
availabilityZone: availabilityZone,
vpcID: vpcID,
containerInstanceARN: containerInstanceARN,
}
}
// Returns container metadata in v4 format for the container identified by the provided
// v3EndpointID.
func (s *TMDSAgentState) GetContainerMetadata(v3EndpointID string) (tmdsv4.ContainerResponse, error) {
// Get docker ID from the v3 endpoint ID.
containerID, ok := s.state.DockerIDByV3EndpointID(v3EndpointID)
if !ok {
return tmdsv4.ContainerResponse{}, tmdsv4.NewErrorLookupFailure(fmt.Sprintf(
"unable to get container ID from request: unable to get docker ID from v3 endpoint ID: %s",
v3EndpointID))
}
containerResponse, err := NewContainerResponse(containerID, s.state)
if err != nil {
logger.Error("Failed to get container metadata", logger.Fields{
field.Container: containerID,
field.Error: err,
})
return tmdsv4.ContainerResponse{}, tmdsv4.NewErrorMetadataFetchFailure(fmt.Sprintf(
"unable to generate metadata for container '%s'", containerID))
}
// fill in network details if not set for NON AWSVPC Task
if containerResponse.Networks == nil {
if containerResponse.Networks, err = GetContainerNetworkMetadata(containerID, s.state); err != nil {
return tmdsv4.ContainerResponse{}, tmdsv4.NewErrorMetadataFetchFailure(err.Error())
}
}
return *containerResponse, nil
}
// Returns task metadata in v4 format for the task identified by the provided endpointContainerID.
func (s *TMDSAgentState) GetTaskMetadata(v3EndpointID string) (tmdsv4.TaskResponse, error) {
return s.getTaskMetadata(v3EndpointID, false)
}
// Returns task metadata including task and container instance tags in v4 format for the
// task identified by the provided endpointContainerID.
func (s *TMDSAgentState) GetTaskMetadataWithTags(v3EndpointID string) (tmdsv4.TaskResponse, error) {
return s.getTaskMetadata(v3EndpointID, true)
}
// Returns task metadata in v4 format for the task identified by the provided endpointContainerID.
func (s *TMDSAgentState) getTaskMetadata(v3EndpointID string, includeTags bool) (tmdsv4.TaskResponse, error) {
taskARN, ok := s.state.TaskARNByV3EndpointID(v3EndpointID)
if !ok {
return tmdsv4.TaskResponse{}, tmdsv4.NewErrorLookupFailure(fmt.Sprintf(
"unable to get task arn from request: unable to get task Arn from v3 endpoint ID: %s",
v3EndpointID))
}
task, ok := s.state.TaskByArn(taskARN)
if !ok {
logger.Error("Task not found in state", logger.Fields{field.TaskARN: taskARN})
return tmdsv4.TaskResponse{}, tmdsv4.NewErrorMetadataFetchFailure(fmt.Sprintf(
"Unable to generate metadata for v4 task: '%s'", taskARN))
}
taskResponse, err := NewTaskResponse(taskARN, s.state, s.ecsClient, s.cluster,
s.availabilityZone, s.vpcID, s.containerInstanceARN, task.ServiceName, includeTags)
if err != nil {
logger.Error("Failed to get task metadata", logger.Fields{
field.TaskARN: taskARN,
field.Error: err,
})
return tmdsv4.TaskResponse{}, tmdsv4.NewErrorMetadataFetchFailure(fmt.Sprintf(
"Unable to generate metadata for v4 task: '%s'", taskARN))
}
taskResponse.CredentialsID = task.GetCredentialsID()
// for non-awsvpc task mode
if !task.IsNetworkModeAWSVPC() {
// fill in non-awsvpc network details for container responses here
responses := make([]tmdsv4.ContainerResponse, 0)
for _, containerResponse := range taskResponse.Containers {
networks, err := GetContainerNetworkMetadata(containerResponse.ID, s.state)
if err != nil {
logger.Warn("Error retrieving network metadata", logger.Fields{
field.Container: containerResponse.ID,
field.Error: err,
})
}
containerResponse.Networks = networks
responses = append(responses, containerResponse)
}
taskResponse.Containers = responses
}
pulledContainers, _ := s.state.PulledContainerMapByArn(task.Arn)
// Convert each pulled container into v4 container response
// and append pulled containers to taskResponse.Containers
for _, dockerContainer := range pulledContainers {
taskResponse.Containers = append(taskResponse.Containers,
NewPulledContainerResponse(dockerContainer, task.GetPrimaryENI()))
}
return *taskResponse, nil
}
func (s *TMDSAgentState) GetContainerStats(v3EndpointID string) (tmdsv4.StatsResponse, error) {
taskARN, ok := s.state.TaskARNByV3EndpointID(v3EndpointID)
if !ok {
return tmdsv4.StatsResponse{}, tmdsv4.NewErrorStatsLookupFailure(fmt.Sprintf(
"unable to get task arn from request: unable to get task Arn from v3 endpoint ID: %s",
v3EndpointID))
}
containerID, ok := s.state.DockerIDByV3EndpointID(v3EndpointID)
if !ok {
return tmdsv4.StatsResponse{}, tmdsv4.NewErrorStatsLookupFailure(fmt.Sprintf(
"unable to get container ID from request: unable to get docker ID from v3 endpoint ID: %s",
v3EndpointID))
}
dockerStats, network_rate_stats, err := s.statsEngine.ContainerDockerStats(taskARN, containerID)
if err != nil {
return tmdsv4.StatsResponse{}, tmdsv4.NewErrorStatsFetchFailure(
fmt.Sprintf("Unable to get container stats for: %s", containerID),
err)
}
return tmdsv4.StatsResponse{
StatsJSON: dockerStats,
Network_rate_stats: network_rate_stats,
}, nil
}
func (s *TMDSAgentState) GetTaskStats(v3EndpointID string) (map[string]*tmdsv4.StatsResponse, error) {
taskARN, ok := s.state.TaskARNByV3EndpointID(v3EndpointID)
if !ok {
return nil, tmdsv4.NewErrorStatsLookupFailure(fmt.Sprintf(
"unable to get task arn from request: unable to get task Arn from v3 endpoint ID: %s",
v3EndpointID))
}
taskStatsResponse, err := NewV4TaskStatsResponse(taskARN, s.state, s.statsEngine)
if err != nil {
return nil, tmdsv4.NewErrorStatsFetchFailure(
fmt.Sprintf("Unable to get task stats for: %s", taskARN),
err)
}
return taskStatsResponse, nil
}