DockerUtils

java.lang.Object
- com.amazonaws.xray.utils.DockerUtils

```
public class DockerUtils
extends java.lang.Object
```
Utility class to get metadata for dockerized containers

Constructor Summary

Constructors
Constructor Description

DockerUtils()

DockerUtils(java.net.URL cgroupLocation)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`@Nullable java.lang.String`	`getContainerId()`	Reads the docker-generated cgroup file that lists the full (untruncated) docker container ID at the end of each line.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DockerUtils
```
public DockerUtils()
```
  - DockerUtils
```
public DockerUtils(java.net.URL cgroupLocation)
```
- Method Detail
  - getContainerId
```
public @Nullable java.lang.String getContainerId()
                                          throws java.io.IOException
```
    Reads the docker-generated cgroup file that lists the full (untruncated) docker container ID at the end of each line. This method takes advantage of that fact by just reading the 64-character ID from the end of the first line.
    
    Returns:
    
    the untruncated Docker container ID, or null if it can't be read
    
    Throws:
    
    java.io.IOException - if the file cannot be read