new DumpGrobidMetaInsertableJob

1 files changed, 38 insertions, 0 deletions

diff --git a/scalding/src/main/scala/sandcrawler/DumpGrobidMetaInsertableJob.scala b/scalding/src/main/scala/sandcrawler/DumpGrobidMetaInsertableJob.scala
new file mode 100644
index 0000000..ee2b7c2
--- /dev/null
+++ b/scalding/src/main/scala/sandcrawler/DumpGrobidMetaInsertableJob.scala
@@ -0,0 +1,38 @@
+package sandcrawler
+
+import java.util.Properties
+
+import cascading.property.AppProps
+import cascading.tuple.Fields
+import com.twitter.scalding._
+import com.twitter.scalding.typed.TDsl._
+import org.apache.hadoop.hbase.io.ImmutableBytesWritable
+import org.apache.hadoop.hbase.util.Bytes
+import parallelai.spyglass.base.JobBase
+import parallelai.spyglass.hbase.HBaseConstants.SourceMode
+import parallelai.spyglass.hbase.HBasePipeConversions
+import parallelai.spyglass.hbase.HBaseSource
+
+// Dumps the SHA1 key and grobid0:metadata columns, plus file metadata needed
+// to insert into fatcat. Used, eg, as part of long-tail mellon pipeline.
+class DumpGrobidMetaInsertableJob(args: Args) extends JobBase(args) with HBasePipeConversions {
+
+  val metaPipe : TypedPipe[(String, String, String, Long, String)] = HBaseBuilder.build(args("hbase-table"),
+                     args("zookeeper-hosts"),
+                     List("file:cdx", "file:mime", "file:size", "grobid0:metadata"),
+                     SourceMode.SCAN_ALL)
+    .read
+    .toTypedPipe[(ImmutableBytesWritable,ImmutableBytesWritable,ImmutableBytesWritable,ImmutableBytesWritable,ImmutableBytesWritable)](new Fields("key", "cdx", "mime", "size", "metadata"))
+    .filter { case (_, cdx, mime, size, metadata) => cdx != null && mime != null && size != null && metadata != null }
+    .map { case (key, cdx, mime, size, metadata) =>
+      (Bytes.toString(key.copyBytes()),
+       Bytes.toString(cdx.copyBytes()),
+       Bytes.toString(mime.copyBytes()),
+       Bytes.toLong(size.copyBytes()),
+       Bytes.toString(metadata.copyBytes())
+      )
+    };
+
+  metaPipe.write(TypedTsv[(String,String,String,Long,String)](args("output")))
+
+}