a c++ solution for sdskeyval

sessions/s4-components/sdskv/solution/words-cc.cc

+#include <assert.h>
+#include <sdskv-client.hpp>
+#include <iostream>
+#include <vector>
+#include <string>
+
+int main(int argc, char **argv)
+{
+    int ret;
+    if (argc != 3) {
+        fprintf(stderr, "Usage: %s <server address> <dictionary>\n", argv[0]);
+        exit(0);
+    }
+
+    /* we are going to use margo/mercury to communicate */
+    margo_instance_id mid = margo_init("na+sm", MARGO_CLIENT_MODE, 0, 0);
+    assert(mid);
+
+    /* fire up the 'sdskv' client library to prepare to find a server */
+    sdskv::client keyval_client(mid);
+
+    /* resolve a mercury address to a 'handle' to the provider on a specific address */
+    hg_addr_t server;
+    margo_addr_lookup(mid, argv[1], &server);
+    sdskv::provider_handle handle = sdskv::provider_handle(keyval_client, server, 1);
+
+    sdskv::database DB = keyval_client.open(handle, "test-db");
+
+#define MAX_WORD 256
+    char buffer[MAX_WORD];
+    size_t buflen;
+
+    FILE *dict = fopen(argv[2], "r");
+    std::vector<std::string> empty;
+    while(fgets(buffer, MAX_WORD, dict) != NULL) {
+        std::string key(buffer);
+        DB.put(key, empty);
+    }
+
+    std::string start_key;
+    std::vector<std::string> output(25);
+    DB.list_keys(start_key, output);
+
+    for (auto x : output)
+        std::cout << "key: " << x;
+
+
+
+    /* shut down (every) provider at given address and clean up resources */
+    keyval_client.shutdown(server);
+    margo_addr_free(mid, server);
+
+    margo_finalize(mid);
+    return 0;
+}