Implement avrorouter in a separate file

The module implementation is now contained in one file. This makes it
easier to see which parts depend on each other.

server/modules/routing/avrorouter/avrorouter.hh

@@ -20,7 +20,6 @@
 #include <string>
 #include <vector>
 #include <tr1/memory>
-#include <blr_constants.h>
 #include <maxscale/alloc.h>
 #include <maxscale/dcb.h>
 #include <maxscale/service.h>
@@ -34,7 +33,7 @@
 #include <binlog_common.h>
 #include <maxscale/sqlite3.h>
 #include <maxscale/protocol/mysql.h>
-
+#include <blr_constants.h>
 #include "rpl_events.hh"
 
 MXS_BEGIN_DECLS
@@ -160,6 +159,15 @@ enum mxs_avro_codec_type
     MXS_AVRO_CODEC_SNAPPY,      /**< Not yet implemented */
 };
 
+static const MXS_ENUM_VALUE codec_values[] =
+{
+    {"null", MXS_AVRO_CODEC_NULL},
+    {"deflate",  MXS_AVRO_CODEC_DEFLATE},
+// Not yet implemented
+//    {"snappy", MXS_AVRO_CODEC_SNAPPY},
+    {NULL}
+};
+
 typedef std::tr1::shared_ptr<AvroTable>        SAvroTable;
 
 typedef std::tr1::unordered_map<std::string, STableCreateEvent> CreatedTables;
@@ -282,9 +290,12 @@ extern avro_binlog_end_t avro_read_all_events(Avro *router);
 extern AvroTable* avro_table_alloc(const char* filepath, const char* json_schema,
                                    const char *codec, size_t block_size);
 extern char* json_new_schema_from_table(const STableMapEvent& map, const STableCreateEvent& create);
-extern void save_avro_schema(const char *path, const char* schema, STableMapEvent& map, STableCreateEvent& create);
+extern void save_avro_schema(const char *path, const char* schema, STableMapEvent& map,
+                             STableCreateEvent& create);
 extern bool handle_table_map_event(Avro *router, REP_HEADER *hdr, uint8_t *ptr);
 extern bool handle_row_event(Avro *router, REP_HEADER *hdr, uint8_t *ptr);
+bool avro_save_conversion_state(Avro *router);
+void avro_update_index(Avro* router);
 
 enum avrorouter_file_op
 {