From d3cb5ed54623b42c15384fa80a622bef043f529c Mon Sep 17 00:00:00 2001
From: Sebastian Schmelzer
Date: Thu, 14 Jul 2011 15:23:41 +0200
Subject: initial import

---
 src/client/main.cpp | 139 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 src/client/main.cpp

(limited to 'src/client')

diff --git a/src/client/main.cpp b/src/client/main.cpp
new file mode 100644
index 0000000..dfec059
--- /dev/null
+++ b/src/client/main.cpp
@@ -0,0 +1,139 @@
+/*
+ # Copyright (c) 2011 - OpenSLX Project, Computer Center University of Freiburg
+ #
+ # This program is free software distributed under the GPL version 2.
+ # See http://gpl.openslx.org/
+ #
+ # If you have any feedback please consult http://feedback.openslx.org/ and
+ # send your suggestions, praise, or complaints to feedback@openslx.org
+ #
+ # General information about OpenSLX can be found at http://openslx.org/
+ */
+
+#include <sstream>
+#include <iostream>
+#include <stdio.h>
+#include <libgearman/gearman.h>
+
+#include "../version.h"
+
+using namespace std;
+
+static void usage(char *name)
+{
+    printf("usage: %s -h <host> [-p <port>] -i <image> -d <device>\n", name);
+    printf("\t-h <host>\t gearman job server host\n");
+    printf("\t-p <port>\t gearman job server port\n");
+    printf("\t-i <image>\t remote image file to load\n");
+    printf("\t-d <device>\t local nbd-device to use\n");
+    printf("\t-v\t\t print version and exit\n");
+}
+
+int main(int argc, char* argv[])
+{
+    string host("");
+    in_port_t port = 0;
+    string image("");
+    string device("");
+
+    gearman_return_t ret;
+    gearman_client_st client;
+
+    // parse command line arguments
+    int c;
+    while ((c = getopt(argc, argv, "h:p:i:d:v")) != -1)
+    {
+        switch (c)
+        {
+        case 'h':
+            host = optarg;
+            break;
+        case 'p':
+            port = (in_port_t) atoi(optarg);
+            break;
+        case 'i':
+            image = optarg;
+            break;
+        case 'd':
+            device = optarg;
+            break;
+        case 'v':
+            printf("Version: %s\n", VERSION_STRING);
+            exit(0);
+        default:
+            usage(argv[0]);
+            exit(1);
+        }
+    }
+
+    if (host == "" || image == "" || device == "")
+    {
+        usage(argv[0]);
+        exit(1);
+    }
+
+    // initialize gearman client
+    if (gearman_client_create(&client) == NULL)
+    {
+        cerr << "[ERROR] Memory allocation failure on client creation" << endl;
+        exit(1);
+    }
+    ret = gearman_client_add_server(&client, host.c_str(), port);
+    if (ret != GEARMAN_SUCCESS)
+    {
+        cerr << "[ERROR] " << gearman_client_error(&client) << endl;
+        exit(1);
+    }
+
+    // main loop
+    char *result;
+    size_t result_size;
+    string msg;
+    while (1)
+    {
+        // send request to gearman job server
+        result = (char *) gearman_client_do(&client, "start_nbd_server", NULL,
+                (void*) image.c_str(), (size_t) image.length(), &result_size,
+                &ret);
+
+        if (ret == GEARMAN_WORK_DATA)
+        {
+            msg = result;
+            free(result);
+            continue;
+        }
+        else if (ret == GEARMAN_WORK_STATUS)
+        {
+            uint32_t m, n;
+            gearman_client_do_status(&client, &n, &m);
+            printf("[INFO] Status: %u/%u\n", n, m);
+            continue;
+        }
+        else if (ret == GEARMAN_SUCCESS)
+        {
+            // start nbd-client
+            stringstream command;
+            command << "nbd-client " << host << " " << msg << " " << device;
+            cout << "[DEBUG] " << "Running command: " << command.str() << endl;
+            system(command.str().c_str());
+            free(result);
+        }
+        else if (ret == GEARMAN_WORK_FAIL)
+        {
+            cerr << "[ERROR] " << msg << endl;
+            cerr << "[ERROR] Work failed" << endl;
+            free(result);
+        }
+        else
+        {
+            cerr << "[ERROR] " << gearman_client_error(&client) << endl;
+            free(result);
+        }
+
+        break;
+    }
+
+    // cleanup
+    gearman_client_free(&client);
+    return 0;
+}
-- 
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