java.lang.Object
- io.fabric8.maven.docker.util.DockerFileUtil

```
public class DockerFileUtil
extends Object
```
Utility class for dealing with dockerfiles

Since:

21/01/16

Author:

roland

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator`	`createInterpolator(MojoParameters params, String filter)`	Create an interpolator for the given maven parameters and filter configuration.
`static Map<String,String>`	`extractArgs(File dockerfile, Map<String,String> argsFromBuildConfig, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)`	Extract Args from dockerfile.
`static List<String>`	`extractBaseImages(File dockerFile, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator, Map<String,String> argsFromBuildConfig)`	Extract the base images from a dockerfile.
`static String[]`	`extractDelimiters(String filter)`
`static List<String[]>`	`extractLines(File dockerFile, String keyword, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)`	Extract all lines containing the given keyword
`static String`	`interpolate(File dockerFile, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)`	Interpolate a docker file with the given properties and filter
`static com.google.gson.JsonObject`	`readDockerConfig()`
`static Map<String,?>`	`readKubeConfig()`

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

Method Detail

extractBaseImages

public static List<String> extractBaseImages(File dockerFile,
                                             org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator,
                                             Map<String,String> argsFromBuildConfig)
                                      throws IOException

Extract the base images from a dockerfile. All lines containing a FROM is taken.

Parameters:: dockerFile - file from where to extract the base image; interpolator - interpolator for replacing properties
Returns:: LinkedList of base images name or empty collection if none is found.
Throws:: IOException

extractArgs

public static Map<String,String> extractArgs(File dockerfile,
                                                   Map<String,String> argsFromBuildConfig,
                                                   org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                                            throws IOException

Extract Args from dockerfile. All lines containing ARG is taken.

Parameters:: dockerfile - Docker File; interpolator - interpolator for replacement
Returns:: HashMap of arguments or empty collection if none is found
Throws:: IOException

extractLines

public static List<String[]> extractLines(File dockerFile,
                                          String keyword,
                                          org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                                   throws IOException

Extract all lines containing the given keyword

Parameters:: dockerFile - dockerfile to examine; keyword - keyword to extract the lines for; interpolator - interpolator for replacing properties
Returns:: list of matched lines or an empty list
Throws:: IOException

interpolate
```
public static String interpolate(File dockerFile,
                                 org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                          throws IOException
```
Interpolate a docker file with the given properties and filter

Parameters:

dockerFile - docker file to interpolate

interpolator - interpolator for replacing properties

Returns:

The interpolated contents of the file.

Throws:

IOException

createInterpolator

public static org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator createInterpolator(MojoParameters params,
                                                                                                       String filter)

Create an interpolator for the given maven parameters and filter configuration.

Parameters:: params - The maven parameters.; filter - The filter configuration.
Returns:: An interpolator for replacing maven properties.

readDockerConfig

public static com.google.gson.JsonObject readDockerConfig()

extractDelimiters

public static String[] extractDelimiters(String filter)

readKubeConfig

public static Map<String,?> readKubeConfig()

Class DockerFileUtil