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https://issues.apache.org/jira/browse/SOLR-7583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14559530#comment-14559530
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Greg Solovyev commented on SOLR-7583:
-------------------------------------
Downloading a zipped snapshot:
http://solr-host:solr-port/collection-name/replication?command=downloadbackup&name=snaphostname&wt=filestream
{code:java}
InputStream stream = null;
URL url = new URL(requestURL);
stream = url.openStream();
FastInputStream is = new FastInputStream((InputStream) stream);
String fileName = "downloaded." + backupName + ".zip";
String savePath =
createTempDir().resolve(fileName).toAbsolutePath().toString();
File outFile = new File(savePath);
FileOutputStream fos = new FileOutputStream(outFile);
Long totalRead = 0L;
try {
byte[] longbytes = new byte[8];
is.readFully(longbytes);
Long fileSize = readLong(longbytes);
while(fileSize > totalRead) {
//store bytes representing packet size here
byte[] intbytes = new byte[4];
//read packet size
is.readFully(intbytes);
int packetSize = readInt(intbytes);
//read the packet
byte[] buf = new byte[packetSize];
is.readFully(buf, 0, packetSize);
fos.write(buf);
fos.flush();
totalRead+=(long)packetSize;
}
} finally {
//close streams
IOUtils.closeQuietly(is);
fos.close();
}
{code}
> API to download snapshot files/restore via upload
> -------------------------------------------------
>
> Key: SOLR-7583
> URL: https://issues.apache.org/jira/browse/SOLR-7583
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Greg Solovyev
> Attachments: SOLR-7583.patch, SOLR-7583.patch
>
>
> What we are looking for:
> SolrCloud and Solr should have APIs to download a snapshot via HTTP.
> For single node Solr, this API will find a snapshot and stream it back over
> HTTP. For SolrCloud, this API will find a Replica that has the snapshot with
> requested name and stream the snapshot from that replica. Since there are
> multiple files inside a snapshot, the API should probably zip the snapshot
> folder before sending it back to the client.
> Why we need this:
> this will allow us to create and fetch fully contained archives of customer
> data where each backup archive will contain Solr index as well as other
> customer data (DB, metadata, files, etc).
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