Get InputStream out of TarArchiveInputStream
I'm getting files from an FTP.
The files I'm getting are either text files or tar.gz
For text files I just send them to S3. If I encounter a tar.gz I want to untar it and save each file with the same method.
public void handleFile() {
try (InputStream fileStream = ftpFileService.getInputStream(file)) {
if (file.getName().lastIndexOf(".TGZ") > -1) {
TarArchiveInputStream tar = new TarArchiveInputStream(new GzipCompressorInputStream(fileStream));
TarArchiveEntry entry = null;
while ((entry = tar.getNextTarEntry()) != null) {
LOGGER.info("fileName to save {}", entry.getName());
saveStreamToS3(entry.getName(), new InputStream(tar));
}
tar.close();
} else {
LOGGER.info("fileName to save {}", fileName.getName());
saveStreamToS3(fileName.getName(), fileStream);
}
} catch (IOException e) {
LOGGER.error(e.getMessage());
}
}
I tried saving the entry directly using new FileInputStream(entry.getFile()) but this returns null.
Do I need to make a saveTarStreamToS3() or can I make an InputStream out of a TarArchiveInputStream?
java amazon-s3 apache-commons-compress
asked Nov 23 at 9:52
gyc
3,28431430
add a comment |
I'm getting files from an FTP.
The files I'm getting are either text files or tar.gz
For text files I just send them to S3. If I encounter a tar.gz I want to untar it and save each file with the same method.
public void handleFile() {
try (InputStream fileStream = ftpFileService.getInputStream(file)) {
if (file.getName().lastIndexOf(".TGZ") > -1) {
TarArchiveInputStream tar = new TarArchiveInputStream(new GzipCompressorInputStream(fileStream));
TarArchiveEntry entry = null;
while ((entry = tar.getNextTarEntry()) != null) {
LOGGER.info("fileName to save {}", entry.getName());
saveStreamToS3(entry.getName(), new InputStream(tar));
}
tar.close();
} else {
LOGGER.info("fileName to save {}", fileName.getName());
saveStreamToS3(fileName.getName(), fileStream);
}
} catch (IOException e) {
LOGGER.error(e.getMessage());
}
}
I tried saving the entry directly using new FileInputStream(entry.getFile()) but this returns null.
Do I need to make a saveTarStreamToS3() or can I make an InputStream out of a TarArchiveInputStream?
java amazon-s3 apache-commons-compress
asked Nov 23 at 9:52
gyc
3,28431430
add a comment |
I'm getting files from an FTP.
The files I'm getting are either text files or tar.gz
For text files I just send them to S3. If I encounter a tar.gz I want to untar it and save each file with the same method.
public void handleFile() {
try (InputStream fileStream = ftpFileService.getInputStream(file)) {
if (file.getName().lastIndexOf(".TGZ") > -1) {
TarArchiveInputStream tar = new TarArchiveInputStream(new GzipCompressorInputStream(fileStream));
TarArchiveEntry entry = null;
while ((entry = tar.getNextTarEntry()) != null) {
LOGGER.info("fileName to save {}", entry.getName());
saveStreamToS3(entry.getName(), new InputStream(tar));
}
tar.close();
} else {
LOGGER.info("fileName to save {}", fileName.getName());
saveStreamToS3(fileName.getName(), fileStream);
}
} catch (IOException e) {
LOGGER.error(e.getMessage());
}
}
I tried saving the entry directly using new FileInputStream(entry.getFile()) but this returns null.
Do I need to make a saveTarStreamToS3() or can I make an InputStream out of a TarArchiveInputStream?
java amazon-s3 apache-commons-compress
asked Nov 23 at 9:52
gyc
3,28431430
I'm getting files from an FTP.
The files I'm getting are either text files or tar.gz
For text files I just send them to S3. If I encounter a tar.gz I want to untar it and save each file with the same method.
public void handleFile() {
try (InputStream fileStream = ftpFileService.getInputStream(file)) {
if (file.getName().lastIndexOf(".TGZ") > -1) {
TarArchiveInputStream tar = new TarArchiveInputStream(new GzipCompressorInputStream(fileStream));
TarArchiveEntry entry = null;
while ((entry = tar.getNextTarEntry()) != null) {
LOGGER.info("fileName to save {}", entry.getName());
saveStreamToS3(entry.getName(), new InputStream(tar));
}
tar.close();
} else {
LOGGER.info("fileName to save {}", fileName.getName());
saveStreamToS3(fileName.getName(), fileStream);
}
} catch (IOException e) {
LOGGER.error(e.getMessage());
}
}
I tried saving the entry directly using new FileInputStream(entry.getFile()) but this returns null.
Do I need to make a saveTarStreamToS3() or can I make an InputStream out of a TarArchiveInputStream?
java amazon-s3 apache-commons-compress
java amazon-s3 apache-commons-compress
asked Nov 23 at 9:52
gyc
3,28431430
asked Nov 23 at 9:52
gyc
3,28431430
edited Nov 23 at 9:57
asked Nov 23 at 9:52
gyc
3,28431430
asked Nov 23 at 9:52
gyc
3,28431430
asked Nov 23 at 9:52
gyc
3,28431430
3,28431430
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
FileInputStream only reads real files. It doesn't read data from inside an archive.
There are two possible solutions
- Use
InputStreamwhich FileInputStream and TarArchiveInputStream impliements - Copy the file to disk, read using FileInputStream, delete afterwards.
The purpose on the interface InputStream is so you don't need to know where the data is coming from, and this is the natural way to solve this.
can I make an InputStream out of a TarArchiveInputStream
TarArchiveInputStream implements InputStream so there is nothing to do.
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
@gyc you don't need to cast it when upcasting. you only need to cast it when downcasting e.g.(TarArchiveInputStream) inputStreamneeds a cast.
– Peter Lawrey
Nov 23 at 10:05
Yes I understand, thank you
– gyc
Nov 23 at 10:20
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
FileInputStream only reads real files. It doesn't read data from inside an archive.
There are two possible solutions
- Use
InputStreamwhich FileInputStream and TarArchiveInputStream impliements - Copy the file to disk, read using FileInputStream, delete afterwards.
The purpose on the interface InputStream is so you don't need to know where the data is coming from, and this is the natural way to solve this.
can I make an InputStream out of a TarArchiveInputStream
TarArchiveInputStream implements InputStream so there is nothing to do.
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
@gyc you don't need to cast it when upcasting. you only need to cast it when downcasting e.g.(TarArchiveInputStream) inputStreamneeds a cast.
– Peter Lawrey
Nov 23 at 10:05
Yes I understand, thank you
– gyc
Nov 23 at 10:20
add a comment |
FileInputStream only reads real files. It doesn't read data from inside an archive.
There are two possible solutions
- Use
InputStreamwhich FileInputStream and TarArchiveInputStream impliements - Copy the file to disk, read using FileInputStream, delete afterwards.
The purpose on the interface InputStream is so you don't need to know where the data is coming from, and this is the natural way to solve this.
can I make an InputStream out of a TarArchiveInputStream
TarArchiveInputStream implements InputStream so there is nothing to do.
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
@gyc you don't need to cast it when upcasting. you only need to cast it when downcasting e.g.(TarArchiveInputStream) inputStreamneeds a cast.
– Peter Lawrey
Nov 23 at 10:05
Yes I understand, thank you
– gyc
Nov 23 at 10:20
add a comment |
FileInputStream only reads real files. It doesn't read data from inside an archive.
There are two possible solutions
- Use
InputStreamwhich FileInputStream and TarArchiveInputStream impliements - Copy the file to disk, read using FileInputStream, delete afterwards.
The purpose on the interface InputStream is so you don't need to know where the data is coming from, and this is the natural way to solve this.
can I make an InputStream out of a TarArchiveInputStream
TarArchiveInputStream implements InputStream so there is nothing to do.
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
FileInputStream only reads real files. It doesn't read data from inside an archive.
There are two possible solutions
- Use
InputStreamwhich FileInputStream and TarArchiveInputStream impliements - Copy the file to disk, read using FileInputStream, delete afterwards.
The purpose on the interface InputStream is so you don't need to know where the data is coming from, and this is the natural way to solve this.
can I make an InputStream out of a TarArchiveInputStream
TarArchiveInputStream implements InputStream so there is nothing to do.
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
answered Nov 23 at 9:58
Peter Lawrey
441k55558959
441k55558959
@gyc you don't need to cast it when upcasting. you only need to cast it when downcasting e.g.(TarArchiveInputStream) inputStreamneeds a cast.
– Peter Lawrey
Nov 23 at 10:05
Yes I understand, thank you
– gyc
Nov 23 at 10:20
add a comment |
@gyc you don't need to cast it when upcasting. you only need to cast it when downcasting e.g.(TarArchiveInputStream) inputStreamneeds a cast.
– Peter Lawrey
Nov 23 at 10:05
Yes I understand, thank you
– gyc
Nov 23 at 10:20
@gyc you don't need to cast it when upcasting. you only need to cast it when downcasting e.g.
(TarArchiveInputStream) inputStream needs a cast.– Peter Lawrey
Nov 23 at 10:05
@gyc you don't need to cast it when upcasting. you only need to cast it when downcasting e.g.
(TarArchiveInputStream) inputStream needs a cast.– Peter Lawrey
Nov 23 at 10:05
Yes I understand, thank you
– gyc
Nov 23 at 10:20
Yes I understand, thank you
– gyc
Nov 23 at 10:20
add a comment |
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