redis++ binaries for mac

ext/redis-plus-plus-1.1.1/src/sw/redis++/errors.cpp

@@ -0,0 +1,136 @@
+/**************************************************************************
+   Copyright (c) 2017 sewenew
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+ *************************************************************************/
+
+#include "errors.h"
+#include <cassert>
+#include <cerrno>
+#include <unordered_map>
+#include <tuple>
+#include "shards.h"
+
+namespace {
+
+using namespace sw::redis;
+
+std::pair<ReplyErrorType, std::string> parse_error(const std::string &msg);
+
+std::unordered_map<std::string, ReplyErrorType> error_map = {
+    {"MOVED", ReplyErrorType::MOVED},
+    {"ASK", ReplyErrorType::ASK}
+};
+
+}
+
+namespace sw {
+
+namespace redis {
+
+void throw_error(redisContext &context, const std::string &err_info) {
+    auto err_code = context.err;
+    const auto *err_str = context.errstr;
+    if (err_str == nullptr) {
+        throw Error(err_info + ": null error message: " + std::to_string(err_code));
+    }
+
+    auto err_msg = err_info + ": " + err_str;
+
+    switch (err_code) {
+    case REDIS_ERR_IO:
+        if (errno == EAGAIN || errno == EINTR) {
+            throw TimeoutError(err_msg);
+        } else {
+            throw IoError(err_msg);
+        }
+        break;
+
+    case REDIS_ERR_EOF:
+        throw ClosedError(err_msg);
+        break;
+
+    case REDIS_ERR_PROTOCOL:
+        throw ProtoError(err_msg);
+        break;
+
+    case REDIS_ERR_OOM:
+        throw OomError(err_msg);
+        break;
+
+    case REDIS_ERR_OTHER:
+        throw Error(err_msg);
+        break;
+
+    default:
+        throw Error(err_info + ": Unknown error code");
+    }
+}
+
+void throw_error(const redisReply &reply) {
+    assert(reply.type == REDIS_REPLY_ERROR);
+
+    if (reply.str == nullptr) {
+        throw Error("Null error reply");
+    }
+
+    auto err_str = std::string(reply.str, reply.len);
+
+    auto err_type = ReplyErrorType::ERR;
+    std::string err_msg;
+    std::tie(err_type, err_msg) = parse_error(err_str);
+
+    switch (err_type) {
+    case ReplyErrorType::MOVED:
+        throw MovedError(err_msg);
+        break;
+
+    case ReplyErrorType::ASK:
+        throw AskError(err_msg);
+        break;
+
+    default:
+        throw ReplyError(err_str);
+        break;
+    }
+}
+
+}
+
+}
+
+namespace {
+
+using namespace sw::redis;
+
+std::pair<ReplyErrorType, std::string> parse_error(const std::string &err) {
+    // The error contains an Error Prefix, and an optional error message.
+    auto idx = err.find_first_of(" \n");
+
+    if (idx == std::string::npos) {
+        throw ProtoError("No Error Prefix: " + err);
+    }
+
+    auto err_prefix = err.substr(0, idx);
+    auto err_type = ReplyErrorType::ERR;
+
+    auto iter = error_map.find(err_prefix);
+    if (iter != error_map.end()) {
+        // Specific error.
+        err_type = iter->second;
+    } // else Generic error.
+
+    return {err_type, err.substr(idx + 1)};
+}
+
+}