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task_client.go
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task_client.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 data
import (
"encoding/json"
apitask "github.com/aws/amazon-ecs-agent/agent/api/task"
"github.com/aws/amazon-ecs-agent/agent/utils"
"github.com/aws/amazon-ecs-agent/agent/version"
"github.com/aws/amazon-ecs-agent/ecs-agent/logger"
"github.com/pkg/errors"
bolt "go.etcd.io/bbolt"
)
// SaveTask saves a task to the task bucket.
func (c *client) SaveTask(task *apitask.Task) error {
id, err := utils.GetTaskID(task.Arn)
if err != nil {
return errors.Wrap(err, "failed to generate database id")
}
return c.DB.Batch(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte(tasksBucketName))
return c.Accessor.PutObject(b, id, task)
})
}
// DeleteTask deletes a task from the task bucket.
func (c *client) DeleteTask(id string) error {
return c.DB.Batch(func(tx *bolt.Tx) error {
b := tx.Bucket([]byte(tasksBucketName))
return b.Delete([]byte(id))
})
}
// GetTasks returns all the tasks in the task bucket.
func (c *client) GetTasks() ([]*apitask.Task, error) {
var tasks []*apitask.Task
err := c.DB.View(func(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte(tasksBucketName))
return c.Accessor.Walk(bucket, func(id string, data []byte) error {
task := apitask.Task{}
// transform the model before loading it to agent state. this is a noop for now.
agentVersionInDB, err := c.GetMetadata(AgentVersionKey)
if err != nil {
logger.Info(emptyAgentVersionMsg)
} else {
if c.Transformer.IsUpgrade(version.Version, agentVersionInDB) {
data, err = c.Transformer.TransformTask(agentVersionInDB, data)
if err != nil {
return err
}
}
}
if err = json.Unmarshal(data, &task); err != nil {
return err
}
tasks = append(tasks, &task)
return nil
})
})
return tasks, err
}