Adding upstream version 2.4.1.upstream/2.4.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 93 insertions, 0 deletions

diff --git a/src/lib/process/log_parser.h b/src/lib/process/log_parser.h
new file mode 100644
index 0000000..92209bd
--- /dev/null
+++ b/src/lib/process/log_parser.h
@@ -0,0 +1,93 @@
+// Copyright (C) 2014-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef DHCPSRV_LOGGING_H
+#define DHCPSRV_LOGGING_H
+
+#include <cc/data.h>
+#include <process/logging_info.h>
+#include <process/config_base.h>
+#include <vector>
+
+namespace isc {
+namespace process {
+
+/// @brief Configures log4cplus by translating Kea configuration structures
+///
+/// This parser iterates over provided data elements and translates them
+/// into values applicable to log4cplus.
+///
+/// The data structures converted to JSON format have the following syntax:
+/// {
+///     "name": "kea",
+///     "output_options": [
+///         {
+///             "output": "/home/thomson/kea-inst/kea-warn.log",
+///             "maxver": 8,
+///             "maxsize": 204800,
+///             "flush": true
+///         }
+///     ],
+///     "severity": "WARN"
+/// }
+///
+/// This is only an example and actual values may be different.
+///
+/// The data structures don't have to originate from JSON. JSON is just a
+/// convenient presentation syntax.
+///
+/// This class uses @c ConfigBase object to store logging configuration.
+class LogConfigParser {
+public:
+
+    /// @brief Constructor
+    ///
+    /// @param storage parsed logging configuration will be stored here
+    LogConfigParser(const ConfigPtr& storage);
+
+    /// @brief Parses specified configuration
+    ///
+    /// Walks over specified logging configuration JSON structures and store
+    /// parsed information in config_->logging_info_.
+    ///
+    /// @param log_config JSON structures to be parsed (loggers list)
+    /// @param verbose specifies verbose mode (true forces DEBUG, debuglevel = 99)
+    void parseConfiguration(const isc::data::ConstElementPtr& log_config,
+                            bool verbose = false);
+
+private:
+
+    /// @brief Parses one JSON structure in Server/loggers" array
+    ///
+    /// @param entry JSON structure to be parsed
+    /// @brief parses one structure in Server/loggers.
+    void parseConfigEntry(isc::data::ConstElementPtr entry);
+
+    /// @brief Parses output_options structure
+    ///
+    /// @ref @c LogConfigParser for an example in JSON format.
+    ///
+    /// @param destination parsed parameters will be stored here
+    /// @param output_options element to be parsed
+    void parseOutputOptions(std::vector<LoggingDestination>& destination,
+                            isc::data::ConstElementPtr output_options);
+
+    /// @brief Configuration is stored here
+    ///
+    /// LogConfigParser class uses only config_->logging_info_ field.
+    ConfigPtr config_;
+
+    /// @brief Verbose mode
+    ///
+    /// When verbose mode is enabled, logging severity is overridden to DEBUG,
+    /// and debuglevel is always 99.
+    bool verbose_;
+};
+
+} // namespace isc::dhcp
+} // namespace isc
+
+#endif // DHCPSRV_LOGGING_H