io.fabric8.maven.docker.util

Class DockerFileUtil

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

Modifier and Type	Method and 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 String	extractBaseImage(File dockerFile, org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator) Extract the base image from a dockerfile.
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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

extractBaseImage

public static String extractBaseImage(File dockerFile,
                                      org.codehaus.plexus.interpolation.fixed.FixedStringSearchInterpolator interpolator)
                               throws IOException

Extract the base image from a dockerfile. The first line containing a FROM is taken.

Parameters:

dockerFile - file from where to extract the base image

interpolator - interpolator for replacing properties

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.