com.bertramlabs.plugins.karman.nfs.NfsCloudFile.groovy Maven / Gradle / Ivy
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Karman Storage Provider interface for NFS Shares
package com.bertramlabs.plugins.karman.nfs
import com.bertramlabs.plugins.karman.CloudFile
import com.bertramlabs.plugins.karman.Directory
import com.bertramlabs.plugins.karman.util.Mimetypes
import com.emc.ecs.nfsclient.nfs.io.Nfs3File
import com.emc.ecs.nfsclient.nfs.io.NfsFileOutputStream
import groovy.transform.CompileStatic
import groovy.util.logging.Commons
/**
* Wrapped implementation of a CloudFile for Karman leveraging the NFSv3 interfaces
*
* @author David Estes
*/
@Commons
class NfsCloudFile extends CloudFile{
NfsStorageProvider provider
Nfs3File baseFile
NfsDirectory parent
InputStream sourceStream = null
URL getURL(Date expirationDate = null) {
new URL("${provider.baseUrl}/${parent.name}/${name}")
}
@Override
InputStream getInputStream() {
if(baseFile.exists()) {
return new NfsFileInputStream(baseFile);
}
return null;
}
@Override
void setInputStream(InputStream is) {
sourceStream = is
}
@Override
OutputStream getOutputStream() {
if(!baseFile.exists()) {
baseFile.createNewFile()
}
return new NfsFileOutputStream(baseFile)
}
@Override
String getText(String encoding=null) {
getInputStream()?.text
}
@Override
byte[] getBytes() {
getInputStream()?.bytes
}
@Override
void setText(String text) {
sourceStream = new ByteArrayInputStream(text.bytes)
}
@Override
void setBytes(Object bytes) {
sourceStream = new ByteArrayInputStream(bytes)
}
@Override
Long getContentLength() {
baseFile.length()
}
Date getDateModified() {
return new Date(baseFile.lastModified())
}
Boolean isDirectory() {
if(!baseFile.exists()) {
return false
}
return baseFile.isDirectory()
}
Boolean isFile() {
if(!baseFile.exists()) {
return false
}
return baseFile.isFile()
}
@Override
String getContentType() {
return Mimetypes.instance.getMimetype(name)
}
@Override
void setContentType(String contentType) {
// Content Type is not implemented in most file system stores
return
}
@Override
Boolean exists() {
return baseFile.exists()
}
def save(acl = '') {
// Auto saves
if(sourceStream) {
try {
if(!baseFile.parentFile.exists()) {
baseFile.parentFile.mkdirs()
}
} catch(ex) {
log.warn("Error ensuring path exists: ${baseFile.parentFile.path} - ${ex.message}...This may be ok though, moving on.")
}
copyStream(sourceStream, getOutputStream())
sourceStream = null
}
return
}
@CompileStatic
private copyStream(InputStream source, OutputStream out) {
try {
byte[] buffer = new byte[8192*2];
int len;
while ((len = source.read(buffer)) != -1) {
out.write(buffer, 0, len);
}
} finally {
try {
out.flush()
out.close()
} catch(ex) {}
source.close()
}
}
@Override
def delete() {
if(baseFile.exists()) {
if(baseFile.isDirectory()) {
parent.listFiles(prefix: baseFile.name + "/",delimiter: "/")?.each { subFile ->
subFile.delete()
}
if(baseFile.exists()) {
try {
baseFile.delete()
} catch (Exception e) {
//this probably walked up the tree.
}
}
} else {
baseFile.delete()
}
}
cleanUpTree()
}
private cleanUpTree() {
Nfs3File parentDir = baseFile.parentFile
while(parentDir.absolutePath != parent.baseFile.absolutePath) {
if(parentDir.list().size() == 0) {
parentDir.delete()
parentDir = parentDir.parentFile
} else {
break
}
}
}
void setMetaAttribute(key, value) {
log.warn("Karman CloudFile Meta Attributes Not Available for NfsCloudFile")
}
def getMetaAttribute(key) {
log.warn("Karman CloudFile Meta Attributes Not Available for NfsCloudFile")
}
def getMetaAttributes() {
log.warn("Karman CloudFile Meta Attributes Not Available for NfsCloudFile")
}
void removeMetaAttribute(key) {
log.warn("Karman CloudFile Meta Attributes Not Available for NfsCloudFile")
}
}
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