added show_git_info.cc (#13)

Show all git repo info

storage/rocksdb/CMakeLists.txt

@@ -162,6 +162,7 @@ INCLUDE_DIRECTORIES(
 
 SET(ROCKSDB_SOURCES
   ${ROCKSDB_SOURCES}
+  show_git_info.cc
   ha_rocksdb.cc
   rdb_datadic.cc
   rdb_iterator.cc

storage/rocksdb/mytopling.json

@@ -13,6 +13,7 @@
     "//end": "end"
   },
   "AnyPlugin": {
+    "git_info":         "GitInfoShower",
     "sys_cf_key_coder": "HtmlTextUserKeyCoder",
     "html_text_key_coder":         "HtmlTextUserKeyCoder"
   },

storage/rocksdb/show_git_info.cc

@@ -0,0 +1,72 @@
+#include <topling/side_plugin_repo.h>
+#include <topling/side_plugin_factory.h>
+#include <rocksdb/db.h>
+#include "sql/mysql_githash.h"
+
+const char* git_version_hash_info_cspp_memtable();
+const char* git_version_hash_info_cspp_wbwi();
+
+namespace rocksdb {
+
+void JS_TopTable_AddVersion(json& djs, bool html);
+__attribute__((weak)) void JS_ZipTable_AddVersion(json& djs, bool html);
+
+class GitInfoShower : public AnyPlugin {
+public:
+  const char* Name() const final { return "GitInfoShower"; }
+  void Update(const json&, const json&, const SidePluginRepo &) {}
+  std::string ToString(const json& dump_options, const SidePluginRepo&) const {
+    json js, jtop, jzip;
+    bool html = JsonSmartBool(dump_options, "html", true);
+
+    if (JS_ZipTable_AddVersion) {
+      JS_ZipTable_AddVersion(jzip, html);
+    }
+    JS_TopTable_AddVersion(jtop, html);
+
+    std::string mysql_git_hash(MYSQL_GIT_HASH);
+    js["mytopling"]["git_sha"] = html ? 
+        "<a href=\"https://github.com/topling/mytopling/commit/"
+        + mysql_git_hash + "\">" 
+        + mysql_git_hash + "</a>"
+        : mysql_git_hash;
+    js["mytopling"]["git_date"] = MYSQL_GIT_DATE;
+
+    js["toplingdb"] = jtop["version"]["rocksdb"];
+
+    constexpr uint SHA_BEGIN_POS = 33;
+    std::string git_cspp_mem =
+        std::string(git_version_hash_info_cspp_memtable()).substr(SHA_BEGIN_POS);
+    std::string git_cspp_wbwi = 
+        std::string(git_version_hash_info_cspp_wbwi()).substr(SHA_BEGIN_POS);
+    if (html) {
+      js["cspp-memtable"] = insert_html_link_and_symbol(
+          git_cspp_mem, "https://github.com/topling/cspp-memtable/commit/");
+      js["cspp-wbwi"] = insert_html_link_and_symbol(
+          git_cspp_wbwi, "https://github.com/topling/cspp-wbwi/commit/");
+    } else {
+      js["cspp-memtable"] = git_cspp_mem;
+      js["cspp-wbwi"] = git_cspp_wbwi;
+    }
+    js.merge_patch(jzip["version"]);
+    js["topling-sst"] = jtop["version"]["topling-sst"];
+    js["topling-zip"] = jtop["version"]["topling-zip"];
+
+    return JsonToString(js, dump_options);
+  }
+
+private:
+    std::string& insert_html_link_and_symbol(
+        std::string& str, const std::string link) const {
+        constexpr uint GIT_SHA_LEN = 40;
+        str.append("</pre>");
+        str.insert(GIT_SHA_LEN, "</a>");
+        str.insert(0, "<pre><a href=\"" + link + str.substr(0, GIT_SHA_LEN) +"\">");
+        return str;
+    }
+};
+
+ROCKSDB_REG_DEFAULT_CONS(GitInfoShower, AnyPlugin);
+ROCKSDB_REG_AnyPluginManip("GitInfoShower");
+
+} // namespace rocksdb