Attempt to save uninsertable log lines to the entities table

If that fails, we still park them as before, such as when the DB is
unavailable. Those which are saved as entities require investigation why
they couldn't be saved, much like UnparsableLines.

3 files changed, 23 insertions, 9 deletions

diff --git a/src/ingestor.cpp b/src/ingestor.cpp
index 44107ce..81642be 100644
--- a/src/ingestor.cpp
+++ b/src/ingestor.cpp
@@ -180,15 +180,26 @@ namespace WebStat {
 			linesParsed++;
 			const auto values = crc32ScanValues(result->values());
 			NewEntityIds ids;
-			{
-				std::optional<DB::TransactionScope> dbtx;
-				if (const auto newEnts = newEntities(values); newEnts.front()) {
-					dbtx.emplace(*dbconn);
-					ids = storeEntities(dbconn, newEnts);
+			try {
+				{
+					std::optional<DB::TransactionScope> dbtx;
+					if (const auto newEnts = newEntities(values); newEnts.front()) {
+						dbtx.emplace(*dbconn);
+						ids = storeEntities(dbconn, newEnts);
+					}
+					storeLogLine(dbconn, values);
+				}
+				rememberNewEntityIds(ids);
+			}
+			catch (const DB::Error & originalError) {
+				try {
+					const auto uninsertableLine = ToEntity<EntityType::UninsertableLine> {}(line);
+					rememberNewEntityIds(storeEntities(dbconn, {uninsertableLine}));
+				}
+				catch (const std::exception &) {
+					throw originalError;
 				}
-				storeLogLine(dbconn, values);
 			}
-			rememberNewEntityIds(ids);
 		}
 		else {
 			linesDiscarded++;
@@ -310,7 +321,7 @@ namespace WebStat {
 	Ingestor::NewEntityIds
 	Ingestor::storeEntities(DB::Connection * dbconn, const std::span<const std::optional<Entity>> values) const
 	{
-		static constexpr std::array<std::pair<std::string_view, void (Ingestor::*)(const Entity &) const>, 7>
+		static constexpr std::array<std::pair<std::string_view, void (Ingestor::*)(const Entity &) const>, 8>
 				ENTITY_TYPE_VALUES {{
 						{"host", nullptr},
 						{"virtual_host", nullptr},
@@ -319,6 +330,7 @@ namespace WebStat {
 						{"referrer", nullptr},
 						{"user_agent", &Ingestor::onNewUserAgent},
 						{"unparsable_line", nullptr},
+						{"uninsertable_line", nullptr},
 				}};
 
 		auto insert = dbconn->modify(SQL::ENTITY_INSERT, SQL::ENTITY_INSERT_OPTS);
diff --git a/src/logTypes.hpp b/src/logTypes.hpp
index 0262060..f9395d1 100644
--- a/src/logTypes.hpp
+++ b/src/logTypes.hpp
@@ -30,6 +30,7 @@ namespace WebStat {
 		Referrer,
 		UserAgent,
 		UnparsableLine,
+		UninsertableLine,
 	};
 
 	using Crc32Value = uint32_t;
diff --git a/src/schema.sql b/src/schema.sql
index d04535e..7648b79 100644
--- a/src/schema.sql
+++ b/src/schema.sql
@@ -27,7 +27,8 @@ CREATE TYPE entity AS ENUM(
 	'query_string',
 	'referrer',
 	'user_agent',
-	'unparsable_line'
+	'unparsable_line',
+	'uninsertable_line'
 );
 
 CREATE TABLE entities(