From 48e4ffe00e473629445ba52e93186dfa8f93c121 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 3 Jul 2022 09:17:56 +0300
Subject: add cache to speed up atom feed generation

---
 lib/atomfeed.source.sh | 47 ++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 40 insertions(+), 7 deletions(-)

(limited to 'lib/atomfeed.source.sh')

diff --git a/lib/atomfeed.source.sh b/lib/atomfeed.source.sh
index 716ef5c..391842a 100644
--- a/lib/atomfeed.source.sh
+++ b/lib/atomfeed.source.sh
@@ -32,19 +32,51 @@ META
     cat "$meta_file"
 }
 
-# Retrieve the core content as XHTML of the blog post.
-atomfeed::content () {
+atomfeed::_from_cache () {
     local -r gmi_file_path="$1"; shift
-    log VERBOSE "Retrieving feed content from $gmi_file_path"
+    local -r cache_file_path="$1"; shift
+
+    if [ ! -f "${cache_file_path}.info" ]; then
+        # No cache there.
+        return 1
+    elif ! diff "${cache_file_path}.info" <(ls -l "$gmi_file_path"); then
+        # Need to refresh the cache.
+        return 1
+    fi
+
+    log VERBOSE "Retrieving feed content for $gmi_file_path from $cache_file_path"
+    cat "$cache_file_path"
+}
+
+atomfeed::_make_cache () {
+    local -r gmi_file_path="$1"; shift
+    local -r cache_file_path="$1"; shift
+
+    log VERBOSE "Making feed content cache from $gmi_file_path"
+
+    local -r cache_file_dir="$(dirname "$cache_file_path")"
+    if [ ! -d "$cache_file_dir" ]; then
+        mkdir -p "$cache_file_dir"
+    fi
 
     # sed: Remove all before the first header
     # sed: Make HTML links absolute, Atom relative URLs feature seems a mess
     # across different Atom clients.
     html::fromgmi < <($SED '/Go back to the main site/d' "$gmi_file_path") |
-    $SED "
-        s|href=\"\./|href=\"https://$DOMAIN/gemfeed/|g;
-        s|src=\"\./|src=\"https://$DOMAIN/gemfeed/|g;
-    "
+    $SED "s|href=\"\./|href=\"https://$DOMAIN/gemfeed/|g;
+          s|src=\"\./|src=\"https://$DOMAIN/gemfeed/|g;" |
+    tee "$cache_file_path"
+
+    ls -l "$gmi_file_path" > "${cache_file_path}.info"
+}
+
+# Retrieve the core content as XHTML of the blog post.
+atomfeed::content () {
+    local -r gmi_file_path="$1"; shift
+    local -r cache_file_path="${gmi_file_path/gemtext/cache}.atomcache"
+
+    atomfeed::_from_cache "$gmi_file_path" "$cache_file_path" ||
+        atomfeed::_make_cache "$gmi_file_path" "$cache_file_path"
 }
 
 # Generate an atom.xml feed file.
@@ -53,6 +85,7 @@ atomfeed::generate () {
     local -r atom_file="$gemfeed_dir/atom.xml"
     local -r now=$($DATE --iso-8601=seconds)
     log INFO "Generating Atom feed to $atom_file"
+    log INFO 'This may takes a while with an empty cache....'
 
     assert::not_empty now "$now"
 
-- 
cgit v1.2.3


From 072e1eef2e56f28a4b9c0540e5bd31a8002592d1 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sun, 28 Aug 2022 10:17:08 +0100
Subject: then there are no notes and no feeds dont process them

---
 lib/atomfeed.source.sh | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'lib/atomfeed.source.sh')

diff --git a/lib/atomfeed.source.sh b/lib/atomfeed.source.sh
index 391842a..c5e492f 100644
--- a/lib/atomfeed.source.sh
+++ b/lib/atomfeed.source.sh
@@ -82,6 +82,10 @@ atomfeed::content () {
 # Generate an atom.xml feed file.
 atomfeed::generate () {
     local -r gemfeed_dir="$CONTENT_BASE_DIR/gemtext/gemfeed"
+    if [ ! -d "$gemfeed_dir" ]; then
+        return
+    fi
+
     local -r atom_file="$gemfeed_dir/atom.xml"
     local -r now=$($DATE --iso-8601=seconds)
     log INFO "Generating Atom feed to $atom_file"
-- 
cgit v1.2.3


From e9044cd87daabcb83522a68732e0b96189baf854 Mon Sep 17 00:00:00 2001
From: Paul Buetow <paul@buetow.org>
Date: Sat, 19 Nov 2022 10:52:17 +0000
Subject: add DRAFT feature

---
 lib/atomfeed.source.sh | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/atomfeed.source.sh')

diff --git a/lib/atomfeed.source.sh b/lib/atomfeed.source.sh
index c5e492f..65afa5a 100644
--- a/lib/atomfeed.source.sh
+++ b/lib/atomfeed.source.sh
@@ -88,6 +88,7 @@ atomfeed::generate () {
 
     local -r atom_file="$gemfeed_dir/atom.xml"
     local -r now=$($DATE --iso-8601=seconds)
+
     log INFO "Generating Atom feed to $atom_file"
     log INFO 'This may takes a while with an empty cache....'
 
-- 
cgit v1.2.3