From 93d5d193e5697f986a9dd58963fb204d2b11ad12 Mon Sep 17 00:00:00 2001
From: Ryan Cross <rcross@amsl.com>
Date: Thu, 28 Oct 2021 18:45:07 +0000
Subject: [PATCH] Change view /ipr/by-draft-recursive to use static content  -
 Legacy-Id: 19488

---
 .../commands/generate_draft_recursive_txt.py  | 17 +++++++++++
 .../0009_generate_draft_recursive_txt.py      | 26 +++++++++++++++++
 ietf/ipr/utils.py                             | 29 +++++++++++++++++++
 ietf/ipr/views.py                             | 26 +++++------------
 4 files changed, 79 insertions(+), 19 deletions(-)
 create mode 100644 ietf/ipr/management/commands/generate_draft_recursive_txt.py
 create mode 100644 ietf/ipr/migrations/0009_generate_draft_recursive_txt.py

diff --git a/ietf/ipr/management/commands/generate_draft_recursive_txt.py b/ietf/ipr/management/commands/generate_draft_recursive_txt.py
new file mode 100644
index 000000000..240fc5348
--- /dev/null
+++ b/ietf/ipr/management/commands/generate_draft_recursive_txt.py
@@ -0,0 +1,17 @@
+# Copyright The IETF Trust 2014-2021, All Rights Reserved
+# -*- coding: utf-8 -*-
+
+
+from django.core.management.base import BaseCommand, CommandError
+
+from ietf.ipr.utils import generate_draft_recursive_txt
+
+
+class Command(BaseCommand):
+    help = ("Generate machine-readable list of IPR disclosures by draft name (recursive)")
+
+    def handle(self, *args, **options):
+        try:
+            generate_draft_recursive_txt()
+        except (ValueError, IOError) as e:
+            raise CommandError(e)
diff --git a/ietf/ipr/migrations/0009_generate_draft_recursive_txt.py b/ietf/ipr/migrations/0009_generate_draft_recursive_txt.py
new file mode 100644
index 000000000..81dba4c44
--- /dev/null
+++ b/ietf/ipr/migrations/0009_generate_draft_recursive_txt.py
@@ -0,0 +1,26 @@
+# Generated by Django 2.2.24 on 2021-10-28 11:20
+
+import os
+
+from django.core.management import call_command
+from django.db import migrations
+
+
+def forwards(apps, schema_editor):
+    call_command('generate_draft_recursive_txt')
+    os.chmod('/a/ietfdata/derived/ipr_draft_recursive.txt', 0o666)
+
+
+def reverse(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ipr', '0008_auto_20201109_0439'),
+    ]
+
+    operations = [
+        migrations.RunPython(forwards, reverse),
+    ]
diff --git a/ietf/ipr/utils.py b/ietf/ipr/utils.py
index 69e03087f..b0d425e5a 100644
--- a/ietf/ipr/utils.py
+++ b/ietf/ipr/utils.py
@@ -1,6 +1,9 @@
 # Copyright The IETF Trust 2014-2020, All Rights Reserved
 # -*- coding: utf-8 -*-
 
+import sys
+
+from ietf.ipr.models import IprDocRel
 
 import debug                            # pyflakes:ignore
 
@@ -61,4 +64,30 @@ def related_docs(alias, relationship=('replaces', 'obs')):
 
     return list(set(results))
 
+
+def generate_draft_recursive_txt():
+    docipr = {}
+
+    for o in IprDocRel.objects.filter(disclosure__state='posted').select_related('document'):
+        alias = o.document
+        name = alias.name
+        for document in alias.docs.all():
+            related = set(document.docalias.all()) | set(document.all_related_that_doc(('obs', 'replaces')))
+            for alias in related:
+                name = alias.name
+                if name.startswith("rfc"):
+                    name = name.upper()
+                if not name in docipr:
+                    docipr[name] = []
+                docipr[name].append(o.disclosure_id)
+
+    lines = [ "# Machine-readable list of IPR disclosures by draft name" ]
+    for name, iprs in docipr.items():
+        lines.append(name + "\t" + "\t".join(str(ipr_id) for ipr_id in sorted(iprs)))
+
+    data = '\n'.join(lines)
+    filename = '/a/ietfdata/derived/ipr_draft_recursive.txt'
+    with open(filename, 'w') as f:
+        f.write(data)
+
     
diff --git a/ietf/ipr/views.py b/ietf/ipr/views.py
index 88e6db45a..5d2d8393f 100644
--- a/ietf/ipr/views.py
+++ b/ietf/ipr/views.py
@@ -459,26 +459,14 @@ def by_draft_txt(request):
     return HttpResponse("\n".join(lines), content_type="text/plain; charset=%s"%settings.DEFAULT_CHARSET)
 
 def by_draft_recursive_txt(request):
-    docipr = {}
+    """Returns machine-readable list of IPR disclosures by draft name, recursive.
+    NOTE: this view is expensive and should be removed once tools.ietf.org is retired,
+    including util function and management commands that generate the content for
+    this view."""
 
-    for o in IprDocRel.objects.filter(disclosure__state='posted').select_related('document'):
-        alias = o.document
-        name = alias.name
-        for document in alias.docs.all():
-            related = set(document.docalias.all()) | set(document.all_related_that_doc(('obs', 'replaces')))
-            for alias in related:
-                name = alias.name
-                if name.startswith("rfc"):
-                    name = name.upper()
-                if not name in docipr:
-                    docipr[name] = []
-                docipr[name].append(o.disclosure_id)
-
-    lines = [ "# Machine-readable list of IPR disclosures by draft name" ]
-    for name, iprs in docipr.items():
-        lines.append(name + "\t" + "\t".join(str(ipr_id) for ipr_id in sorted(iprs)))
-
-    return HttpResponse("\n".join(lines), content_type="text/plain; charset=%s"%settings.DEFAULT_CHARSET)
+    with open('/a/ietfdata/derived/ipr_draft_recursive.txt') as f:
+        content = f.read()
+    return HttpResponse(content, content_type="text/plain; charset=%s"%settings.DEFAULT_CHARSET)
 
 
 def new(request, type, updates=None):