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-rw-r--r--daemon/commands.h81
1 files changed, 81 insertions, 0 deletions
diff --git a/daemon/commands.h b/daemon/commands.h
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+++ b/daemon/commands.h
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+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_COMMANDS_H
+#define NETDATA_COMMANDS_H 1
+
+#ifdef _WIN32
+# define PIPENAME "\\\\?\\pipe\\netdata-cli"
+#else
+# define PIPENAME "/tmp/netdata-ipc"
+#endif
+
+#define MAX_COMMAND_LENGTH 4096
+#define MAX_EXIT_STATUS_LENGTH 23 /* Can't ever be bigger than "X-18446744073709551616" */
+
+typedef enum cmd {
+ CMD_HELP = 0,
+ CMD_RELOAD_HEALTH,
+ CMD_SAVE_DATABASE,
+ CMD_REOPEN_LOGS,
+ CMD_EXIT,
+ CMD_FATAL,
+ CMD_RELOAD_CLAIMING_STATE,
+ CMD_RELOAD_LABELS,
+ CMD_READ_CONFIG,
+ CMD_WRITE_CONFIG,
+ CMD_PING,
+ CMD_TOTAL_COMMANDS
+} cmd_t;
+
+typedef enum cmd_status {
+ CMD_STATUS_SUCCESS = 0,
+ CMD_STATUS_FAILURE,
+ CMD_STATUS_BUSY
+} cmd_status_t;
+
+#define CMD_PREFIX_INFO 'O' /* Following string should go to cli stdout */
+#define CMD_PREFIX_ERROR 'E' /* Following string should go to cli stderr */
+#define CMD_PREFIX_EXIT_CODE 'X' /* Following string is cli integer exit code */
+
+typedef enum cmd_type {
+ /*
+ * No other command is allowed to run at the same time (except for CMD_TYPE_HIGH_PRIORITY).
+ */
+ CMD_TYPE_EXCLUSIVE = 0,
+ /*
+ * Other commands are allowed to run concurrently (except for CMD_TYPE_EXCLUSIVE) but calls to this command are
+ * serialized.
+ */
+ CMD_TYPE_ORTHOGONAL,
+ /*
+ * Other commands are allowed to run concurrently (except for CMD_TYPE_EXCLUSIVE) as are calls to this command.
+ */
+ CMD_TYPE_CONCURRENT,
+ /*
+ * Those commands are always allowed to run.
+ */
+ CMD_TYPE_HIGH_PRIORITY
+} cmd_type_t;
+
+/**
+ * Executes a command and returns the status.
+ *
+ * @param args a string that may contain additional parameters to be parsed
+ * @param message allocate and return a message if need be (up to MAX_COMMAND_LENGTH bytes)
+ * @return CMD_FAILURE or CMD_SUCCESS
+ */
+typedef cmd_status_t (command_action_t) (char *args, char **message);
+
+typedef struct command_info {
+ char *cmd_str; // the command string
+ command_action_t *func; // the function that executes the command
+ cmd_type_t type; // Concurrency control information for the command
+} command_info_t;
+
+typedef void (command_lock_t) (unsigned index);
+
+cmd_status_t execute_command(cmd_t idx, char *args, char **message);
+extern void commands_init(void);
+extern void commands_exit(void);
+
+#endif //NETDATA_COMMANDS_H