mu: update the index 'processed' -> 'checked'

The 'processed' statistic for indexing was more-or-less synonymous for
'updated'; let's change to something more useful, 'checked' which roughly means
the number of messages checked for updates (typically a cheap timestamp check).

lib/index/mu-indexer.cc

@@ -124,7 +124,10 @@ Indexer::Private::handler(const std::string&  fullpath,
 		dirstamp_ = store_.dirstamp(fullpath);
 		if (conf_.lazy_check && dirstamp_ >= statbuf->st_mtime &&
 		    htype == Scanner::HandleType::EnterNewCur) {
-			g_debug("skip %s (seems up-to-date)", fullpath.c_str());
+			g_debug("skip %s (seems up-to-date: %s >= %s)",
+			        fullpath.c_str(),
+			        time_to_string("%FT%T", dirstamp_).c_str(),
+			        time_to_string("%FT%T", statbuf->st_mtime).c_str());
 			return false;
 		}
 
@@ -145,7 +148,7 @@ Indexer::Private::handler(const std::string&  fullpath,
 			}
 		}
 
-		g_debug("process %s", fullpath.c_str());
+		g_debug("checked %s", fullpath.c_str());
 		return true;
 	}
 	case Scanner::HandleType::LeaveDir: {
@@ -154,6 +157,8 @@ Indexer::Private::handler(const std::string&  fullpath,
 	}
 
 	case Scanner::HandleType::File: {
+		++progress_.checked;
+
 		if ((size_t)statbuf->st_size > max_message_size_) {
 			g_debug("skip %s (too big: %" G_GINT64_FORMAT " bytes)",
 			        fullpath.c_str(),
@@ -168,6 +173,8 @@ Indexer::Private::handler(const std::string&  fullpath,
 			return false;
 		}
 
+		// push the remaining messages to our "todo" queue for
+		// (re)parsing and adding/updating to the database.
 		fq_.push(std::string{fullpath});
 		return true;
 	}
@@ -194,10 +201,6 @@ Indexer::Private::worker()
 	while (state_ == IndexState::Scanning || !fq_.empty()) {
 		if (!fq_.pop(item, 250ms))
 			continue;
-
-		// g_debug ("popped (n=%zu) path %s", fq_.size(), item.c_str());
-		++progress_.processed;
-
 		try {
 			std::unique_lock lock{lock_};
 

lib/index/mu-indexer.hh

@@ -29,7 +29,7 @@ class Store;
 
 /// An object abstracting the index process.
 class Indexer {
-      public:
+public:
 	/**
 	 * Construct an indexer object
 	 *
@@ -86,10 +86,10 @@ class Indexer {
 
 	// Object describing current progress
 	struct Progress {
-		bool   running{};   /**< Is an index operation in progress? */
-		size_t processed{}; /**< Number of messages processed */
-		size_t updated{};   /**< Number of messages added/updated to store */
-		size_t removed{};   /**< Number of message removed from store */
+		bool   running{}; /**< Is an index operation in progress? */
+		size_t checked{}; /**< Number of messages checked for changes */
+		size_t updated{}; /**< Number of messages (re)parsed &  added/updated to store */
+		size_t removed{}; /**< Number of message removed from store */
 	};
 
 	/**
@@ -101,7 +101,7 @@ class Indexer {
 	 */
 	Progress progress() const;
 
-      private:
+private:
 	struct Private;
 	std::unique_ptr<Private> priv_;
 };

lib/mu-server.cc

@@ -104,7 +104,7 @@ struct Server::Private {
 	void sent_handler(const Parameters& params);
 	void view_handler(const Parameters& params);
 
-	private:
+private:
 	// helpers
 	Sexp build_message_sexp(MuMsg*                    msg,
 	                        unsigned                  docid,
@@ -754,7 +754,7 @@ get_stats(const Indexer::Progress& stats, const std::string& state)
 
 	lst.add_prop(":info", Sexp::make_symbol("index"));
 	lst.add_prop(":status", Sexp::make_symbol(std::string{state}));
-	lst.add_prop(":processed", Sexp::make_number(stats.processed));
+	lst.add_prop(":checked", Sexp::make_number(stats.checked));
 	lst.add_prop(":updated", Sexp::make_number(stats.updated));
 	lst.add_prop(":cleaned-up", Sexp::make_number(stats.removed));
 

mu/mu-cmd-index.cc

@@ -72,7 +72,7 @@ print_stats(const Indexer::Progress& stats, bool color)
 	using Color = MaybeAnsi::Color;
 
 	std::cout << col.fg(Color::Yellow) << kars[++i % 4] << col.reset() << " indexing messages; "
-		  << "processed: " << col.fg(Color::Green) << stats.processed << col.reset()
+		  << "checked: " << col.fg(Color::Green) << stats.checked << col.reset()
 		  << "; updated/new: " << col.fg(Color::Green) << stats.updated << col.reset()
 		  << "; cleaned-up: " << col.fg(Color::Green) << stats.removed << col.reset();
 }