Package com.dtolabs.rundeck.core.resources

Class BaseFileResourceModelSource

java.lang.Object

com.dtolabs.rundeck.core.resources.BaseFileResourceModelSource

All Implemented Interfaces:

ResourceModelSource, WriteableModelSource

Direct Known Subclasses:

FileResourceModelSource

public abstract class BaseFileResourceModelSource
extends java.lang.Object
implements ResourceModelSource, WriteableModelSource

A base class for a Writeable ResourceModelSource that supports the Rundeck parser formats. This class maintains cached Nodes data, and a "last modified" timestamp can be used to determine if cached or fresh data should be returned. Subclasses can define the specific ResourceFormat to use, either by returning a provider name from getResourceFormat(), a file extension from getDocumentFileExtension() or overridding getResourceFormatParser() directly.

Methods implementing WriteableModelSource are provided, but can be overridden.

This class is meant to serve as a base class for a ResourceModelSource similar to the FileResourceModelSource where the backend is similar to a file system.

Abstract methods which should be implemented:

• getResourceFormat()
• getDocumentFileExtension()
• writeFileData(long, InputStream)
• openFileDataInputStream()

Methods which can be overridden:

• isDataWritable()
• shouldGenerateServerNode()
• isSupportsLastModified()
• getLastModified()
• getResourceFormatParser()

Since:

9/11/17

Field Summary

Fields

Modifier and Type	Field	Description
protected Framework	framework
protected NodeSetImpl	nodeSet

Constructor Summary

Constructors

Constructor	Description
BaseFileResourceModelSource(Framework framework)

Method Summary

Modifier and Type	Method	Description
protected abstract java.lang.String	getDocumentFileExtension()
protected long	getLastModified()
INodeSet	getNodes()
INodeSet	getNodes(ResourceFormatParser parser)	Returns a INodeSet object conatining the nodes config data.
protected abstract java.lang.String	getResourceFormat()
protected ResourceFormatParser	getResourceFormatParser()	Uses the result of getResourceFormat() or getDocumentFileExtension() to retrieve a ResourceFormatParser.
SourceType	getSourceType()
java.lang.String	getSyntaxMimeType()
WriteableModelSource	getWriteable()
boolean	isDataWritable()
protected boolean	isSupportsLastModified()
abstract java.io.InputStream	openFileDataInputStream()
long	readData(java.io.OutputStream sink)	read current data into the sink
protected boolean	shouldGenerateServerNode()
long	writeData(java.io.InputStream data)	Writes the data to a temp file, and attempts to parser it, then if successful it will call writeFileData(long, InputStream) to invoke the sub class
protected long	writeFileData(long length, java.io.InputStream tempStream)	Write the file data from the inputstream to the backing store, this implementation calls writeFileData(InputStream) but can be overridden
abstract long	writeFileData(java.io.InputStream tempStream)	Write the file data from the inputstream to the backing store

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.dtolabs.rundeck.core.resources.WriteableModelSource

getSourceDescription, hasData

Field Detail

framework

protected Framework framework

nodeSet

protected NodeSetImpl nodeSet

Constructor Detail

BaseFileResourceModelSource

public BaseFileResourceModelSource(Framework framework)

Method Detail

getSyntaxMimeType

public java.lang.String getSyntaxMimeType()

Specified by:

getSyntaxMimeType in interface WriteableModelSource

Returns:

the mime type of the data

getResourceFormatParser

protected ResourceFormatParser getResourceFormatParser()
                                                throws ResourceModelSourceException

Uses the result of getResourceFormat() or getDocumentFileExtension() to retrieve a ResourceFormatParser.

Returns:

implementation of ResourceFormatParser

Throws:

ResourceModelSourceException

getResourceFormat

protected abstract java.lang.String getResourceFormat()

Returns:

the name of the supported ResourceFormatParser provider, or null if the file extension is used

getDocumentFileExtension

protected abstract java.lang.String getDocumentFileExtension()

Returns:

the file extension of the document, or the getResourceFormat() must be used.

writeData

public long writeData(java.io.InputStream data)
               throws java.io.IOException,
                      ResourceModelSourceException

Writes the data to a temp file, and attempts to parser it, then if successful it will call writeFileData(long, InputStream) to invoke the sub class

Specified by:

writeData in interface WriteableModelSource

Parameters:

data - data

Returns:

number of bytes written

Throws:

java.io.IOException - if an IO error occurs

ResourceModelSourceException - if an error occurs parsing the data.

writeFileData

public abstract long writeFileData(java.io.InputStream tempStream)
                            throws java.io.IOException

Write the file data from the inputstream to the backing store

Parameters:

tempStream - input stream

Returns:

bytes writen

Throws:

java.io.IOException

writeFileData

protected long writeFileData(long length,
                             java.io.InputStream tempStream)
                      throws java.io.IOException

Write the file data from the inputstream to the backing store, this implementation calls writeFileData(InputStream) but can be overridden

Parameters:

length - data length

tempStream - input stream

Returns:

bytes writen

Throws:

java.io.IOException

openFileDataInputStream

public abstract java.io.InputStream openFileDataInputStream()
                                                     throws java.io.IOException,
                                                            ResourceModelSourceException

Returns:

an input stream that reads the data from the backing store

Throws:

java.io.IOException

ResourceModelSourceException

readData

public long readData(java.io.OutputStream sink)
              throws java.io.IOException,
                     ResourceModelSourceException

Description copied from interface: WriteableModelSource

read current data into the sink

Specified by:

readData in interface WriteableModelSource

Returns:

bytes written

Throws:

java.io.IOException

ResourceModelSourceException

getSourceType

public SourceType getSourceType()

Specified by:

getSourceType in interface ResourceModelSource

Returns:

the type of source, which may be writeable, by default return READ_ONLY. If it is writeable, it must implement WriteableModelSource

isDataWritable

public boolean isDataWritable()

Returns:

true if the model source is writable, false if the data should not be modified with writeData(InputStream)

shouldGenerateServerNode

protected boolean shouldGenerateServerNode()

Returns:

true if the node set should always include the local server node data

isSupportsLastModified

protected boolean isSupportsLastModified()

Returns:

true if the underlying data set supports a "last modified" timestamp which should be used to determine whether the nodes data should be reloaded or cached data can be used

getLastModified

protected long getLastModified()

Returns:

last modified unix timestamp, or -1 if not available

getWriteable

public WriteableModelSource getWriteable()

Specified by:

getWriteable in interface ResourceModelSource

Returns:

a WriteableModelSource if the source type is READ_WRITE

getNodes

public INodeSet getNodes()
                  throws ResourceModelSourceException

Specified by:

getNodes in interface ResourceModelSource

Throws:

ResourceModelSourceException

getNodes

public INodeSet getNodes(ResourceFormatParser parser)
                  throws ResourceModelSourceException

Returns a INodeSet object conatining the nodes config data.

Parameters:

parser - model parser

Returns:

an instance of INodeSet

Throws:

ResourceModelSourceException - on error