From 7f0bcf56425361b17397c5b7457a82ddec147cbd Mon Sep 17 00:00:00 2001
From: Martin Czygan <martin.czygan@gmail.com>
Date: Wed, 28 Apr 2021 23:34:49 +0200
Subject: add WithISBN task

---
 python/refcat/tasks.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/python/refcat/tasks.py b/python/refcat/tasks.py
index 39565ff..6893cb1 100644
--- a/python/refcat/tasks.py
+++ b/python/refcat/tasks.py
@@ -1426,3 +1426,25 @@ class RefsSortedIdent(Refcat):
 
     def output(self):
         return luigi.LocalTarget(path=self.path(ext="json.zst"), format=Zstd)
+
+# OL
+
+class WithISBN(Refcat):
+    """
+    Keeps converted refs with isbn.
+    """
+    def requires(self):
+        return RefsToRelease()
+
+    def run(self):
+        output = shellout("""
+                          zstdcat -T0 {input} |
+                          parallel -j {n} --block 10M --pipe "jq -rc 'select(.ext_ids.isbn != null)" |
+                          zstd -T0 -c > {output}
+                          """,
+                          tmpdir=self.tmpdir,
+                          input=self.input().path)
+        luigi.LocalTarget(output).move(self.output().path)
+
+    def output(self):
+        return luigi.LocalTarget(path=self.path(ext="json.zst"), format=Zstd)
-- 
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