Improve info and error messages shown in boot sequence.

Also, if the data directory does not exist, say so without crashing.

TODO.md

@@ -78,6 +78,7 @@
 - ~~Export collection~~
 - ~~get collection should show schema~~
 - ~~API key should be allowed as a GET parameter also (for JSONP)~~
+- ~~Don't crash when the data directory is not found~~
 - handle hyphens (replace them)
 - clean special chars before indexing
 - NOT operator support

include/typesense_version.h

@@ -0,0 +1 @@
+#define TYPESENSE_VERSION "0.6.1"

src/http_server.cpp

@@ -99,6 +99,8 @@ int HttpServer::create_listener(void) {
         setup_ssl(ssl_cert_path.c_str(), ssl_cert_key_path.c_str());
     }
 
+    ctx.globalconf->server_name = h2o_strdup(NULL, "", SIZE_MAX);
+
     accept_ctx->ctx = &ctx;
     accept_ctx->hosts = config.hosts;
 
@@ -114,7 +116,6 @@ int HttpServer::create_listener(void) {
         return -1;
     }
 
-    ctx.globalconf->server_name = h2o_strdup(NULL, "", SIZE_MAX);
     listener_socket = h2o_evloop_socket_create(ctx.loop, fd, H2O_SOCKET_FLAG_DONT_READ);
     listener_socket->data = this;
     h2o_socket_read_start(listener_socket, on_accept);
@@ -131,9 +132,11 @@ int HttpServer::run() {
     h2o_multithread_register_receiver(message_queue, message_receiver, on_message);
 
     if (create_listener() != 0) {
-        std::cerr << "Failed to listen on " << listen_address << ":" << listen_port << std::endl
-                  << "Error: " << strerror(errno) << std::endl;
+        std::cerr << "Failed to listen on " << listen_address << ":" << listen_port << " - "
+                  << strerror(errno) << std::endl;
         return 1;
+    } else {
+        std::cout << "Server has started. Ready to accept requests on port " << listen_port << std::endl;
     }
 
     on(STOP_SERVER_MESSAGE, HttpServer::on_stop_server);

src/main/typesense_server.cpp

@@ -3,11 +3,14 @@
 #include <vector>
 #include <string>
 #include <thread>
+#include <sys/types.h>
+#include <sys/stat.h>
 #include <cmdline.h>
 #include "http_server.h"
 #include "api.h"
 #include "string_utils.h"
 #include "replicator.h"
+#include "typesense_version.h"
 
 HttpServer* server;
 
@@ -17,6 +20,11 @@ void catch_interrupt(int sig) {
     server->stop();
 }
 
+bool directory_exists(const std::string & dir_path) {
+    struct stat info;
+    return stat(dir_path.c_str(), &info) == 0 && (info.st_mode & S_IFDIR);
+}
+
 int main(int argc, char **argv) {
     cmdline::parser options;
     options.add<std::string>("data-dir", 'd', "Directory where data will be stored.", true);
@@ -35,16 +43,25 @@ int main(int argc, char **argv) {
 
     signal(SIGINT, catch_interrupt);
 
+    std::cout << "Typesense version " << TYPESENSE_VERSION << std::endl;
+
+    if(!directory_exists(options.get<std::string>("data-dir"))) {
+        std::cerr << "Typesense failed to start. " << "Data directory " << options.get<std::string>("data-dir")
+                  << " does not exist." << std::endl;
+        return 1;
+    }
+
     Store store(options.get<std::string>("data-dir"));
     CollectionManager & collectionManager = CollectionManager::get_instance();
     Option<bool> init_op = collectionManager.init(&store, options.get<std::string>("api-key"),
                                                   options.get<std::string>("search-only-api-key"));
 
     if(init_op.ok()) {
-        std::cout << "Finished restoring all collections from disk." << std::endl;
+        std::cout << "Finished loading collections from disk." << std::endl;
     } else {
-        std::cerr << "Failed initializing collections from store..." << std::endl;
-        std::cerr << init_op.error() << std::endl;
+        std::cerr << "Typesense failed to start. " << "Could not load collections from disk: "
+                  << init_op.error() << std::endl;
+        return 1;
     }
 
     server = new HttpServer(