+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software
- * Foundation. See file COPYING.
- *
- */
-
-#include "common/ceph_argparse.h"
-#include "common/common_init.h"
-#include "common/config.h"
-#include "include/str_list.h"
-#include "include/stringify.h"
-#include "osd/osd_types.h"
-#include "common/errno.h"
-#include "common/hostname.h"
-
-#include <boost/type_traits.hpp>
-
-/* Don't use standard Ceph logging in this file.
- * We can't use logging until it's initialized, and a lot of the necessary
- * initialization happens here.
- */
-#undef dout
-#undef ldout
-#undef pdout
-#undef derr
-#undef lderr
-#undef generic_dout
-#undef dendl
-
-using std::map;
-using std::list;
-using std::ostringstream;
-using std::pair;
-using std::string;
-
-const char *CEPH_CONF_FILE_DEFAULT = "$data_dir/config, /etc/ceph/$cluster.conf, ~/.ceph/$cluster.conf, $cluster.conf"
-#if defined(__FreeBSD__)
- ", /usr/local/etc/ceph/$cluster.conf"
-#endif
- ;
-
-#define _STR(x) #x
-#define STRINGIFY(x) _STR(x)
-
-int ceph_resolve_file_search(const std::string& filename_list,
- std::string& result)
-{
- list<string> ls;
- get_str_list(filename_list, ls);
-
- int ret = -ENOENT;
- list<string>::iterator iter;
- for (iter = ls.begin(); iter != ls.end(); ++iter) {
- int fd = ::open(iter->c_str(), O_RDONLY);
- if (fd < 0) {
- ret = -errno;
- continue;
- }
- close(fd);
- result = *iter;
- return 0;
- }
-
- return ret;
-}
-
-
-
-md_config_t::md_config_t(bool is_daemon)
- : cluster(""),
- lock("md_config_t", true, false)
-{
- init_subsys();
-
- // Load the compile-time list of Option into
- // a map so that we can resolve keys quickly.
- for (const auto &i : ceph_options) {
- if (schema.count(i.name)) {
- // We may be instantiated pre-logging so send
- std::cerr << "Duplicate config key in schema: '" << i.name << "'"
- << std::endl;
- assert(false);
- }
- schema.insert({i.name, i});
- }
-
- // Populate list of legacy_values according to the OPTION() definitions
- // Note that this is just setting up our map of name->member ptr. The
- // default values etc will get loaded in along with new-style data,
- // as all loads write to both the values map, and the legacy
- // members if present.
- legacy_values = {
-#define OPTION(name, type) \
- {std::string(STRINGIFY(name)), &md_config_t::name},
-#define SAFE_OPTION(name, type) OPTION(name, type)
-#include "common/legacy_config_opts.h"
-#undef OPTION
-#undef SAFE_OPTION
- };
-
- validate_schema();
-
- // Load default values from the schema
- for (const auto &i : schema) {
- const Option &opt = i.second;
- bool has_daemon_default = !boost::get<boost::blank>(&opt.daemon_value);
- Option::value_t default_val;
- if (is_daemon && has_daemon_default) {
- default_val = opt.daemon_value;
- } else {
- default_val = opt.value;
- }
-
- if (opt.type == Option::TYPE_STR) {
- // We call pre_validate as a sanity check, but also to get any
- // side effect (value modification) from the validator.
- std::string *def_str = boost::get<std::string>(&default_val);
- std::string err;
- if (opt.pre_validate(def_str, &err) != 0) {
- std::cerr << "Default value " << opt.name << "=" << *def_str << " is "
- "invalid: " << err << std::endl;
-
- // This is the compiled-in default that is failing its own option's
- // validation, so this is super-invalid and should never make it
- // past a pull request: crash out.
- assert(false);
- }
- }
-
- values[i.first] = default_val;
- }
-
- // Copy out values (defaults) into any legacy (C struct member) fields
- for (const auto &i : legacy_values) {
- const auto &name = i.first;
- const auto &option = schema.at(name);
- auto ptr = i.second;
-
- update_legacy_val(option, ptr);
- }
-}
-
-/**
- * Sanity check schema. Assert out on failures, to ensure any bad changes
- * cannot possibly pass any testing and make it into a release.
- */
-void md_config_t::validate_schema()
-{
- for (const auto &i : schema) {
- const auto &opt = i.second;
- for (const auto &see_also_key : opt.see_also) {
- if (schema.count(see_also_key) == 0) {
- std::cerr << "Non-existent see-also key '" << see_also_key
- << "' on option '" << opt.name << "'" << std::endl;
- assert(false);
- }
- }
- }
-
- for (const auto &i : legacy_values) {
- if (schema.count(i.first) == 0) {
- std::cerr << "Schema is missing legacy field '" << i.first << "'"
- << std::endl;
- assert(false);
- }
- }
-}
-
-void md_config_t::init_subsys()
-{
-#define SUBSYS(name, log, gather) \
- subsys.add(ceph_subsys_##name, STRINGIFY(name), log, gather);
-#define DEFAULT_SUBSYS(log, gather) \
- subsys.add(ceph_subsys_, "none", log, gather);
-#include "common/subsys.h"
-#undef SUBSYS
-#undef DEFAULT_SUBSYS
-}
-
-md_config_t::~md_config_t()
-{
-}
-
-void md_config_t::add_observer(md_config_obs_t* observer_)
-{
- Mutex::Locker l(lock);
- const char **keys = observer_->get_tracked_conf_keys();
- for (const char ** k = keys; *k; ++k) {
- obs_map_t::value_type val(*k, observer_);
- observers.insert(val);
- }
-}
-
-void md_config_t::remove_observer(md_config_obs_t* observer_)
-{
- Mutex::Locker l(lock);
- bool found_obs = false;
- for (obs_map_t::iterator o = observers.begin(); o != observers.end(); ) {
- if (o->second == observer_) {
- observers.erase(o++);
- found_obs = true;
- }
- else {
- ++o;
- }
- }
- assert(found_obs);
-}
-
-int md_config_t::parse_config_files(const char *conf_files,
- std::ostream *warnings,
- int flags)
-{
- Mutex::Locker l(lock);
-
- if (internal_safe_to_start_threads)
- return -ENOSYS;
-
- if (!cluster.size() && !conf_files) {
- /*
- * set the cluster name to 'ceph' when neither cluster name nor
- * configuration file are specified.
- */
- cluster = "ceph";
- }
-
- if (!conf_files) {
- const char *c = getenv("CEPH_CONF");
- if (c) {
- conf_files = c;
- }
- else {
- if (flags & CINIT_FLAG_NO_DEFAULT_CONFIG_FILE)
- return 0;
- conf_files = CEPH_CONF_FILE_DEFAULT;
- }
- }
-
- std::list<std::string> cfl;
- get_str_list(conf_files, cfl);
-
- auto p = cfl.begin();
- while (p != cfl.end()) {
- // expand $data_dir?
- string &s = *p;
- if (s.find("$data_dir") != string::npos) {
- if (data_dir_option.length()) {
- list<const Option *> stack;
- expand_meta(s, NULL, stack, warnings);
- p++;
- } else {
- cfl.erase(p++); // ignore this item
- }
- } else {
- ++p;
- }
- }
- return parse_config_files_impl(cfl, warnings);
-}
-
-int md_config_t::parse_config_files_impl(const std::list<std::string> &conf_files,
- std::ostream *warnings)
-{
- assert(lock.is_locked());
-
- // open new conf
- list<string>::const_iterator c;
- for (c = conf_files.begin(); c != conf_files.end(); ++c) {
- cf.clear();
- string fn = *c;
- expand_meta(fn, warnings);
- int ret = cf.parse_file(fn.c_str(), &parse_errors, warnings);
- if (ret == 0)
- break;
- else if (ret != -ENOENT)
- return ret;
- }
- // it must have been all ENOENTs, that's the only way we got here
- if (c == conf_files.end())
- return -ENOENT;
-
- if (cluster.size() == 0) {
- /*
- * If cluster name is not set yet, use the prefix of the
- * basename of configuration file as cluster name.
- */
- auto start = c->rfind('/') + 1;
- auto end = c->find(".conf", start);
- if (end == c->npos) {
- /*
- * If the configuration file does not follow $cluster.conf
- * convention, we do the last try and assign the cluster to
- * 'ceph'.
- */
- cluster = "ceph";
- } else {
- cluster = c->substr(start, end - start);
- }
- }
-
- std::vector <std::string> my_sections;
- _get_my_sections(my_sections);
- for (const auto &i : schema) {
- const auto &opt = i.second;
- std::string val;
- int ret = _get_val_from_conf_file(my_sections, opt.name, val, false);
- if (ret == 0) {
- std::string error_message;
- int r = set_val_impl(val, opt, &error_message);
- if (warnings != nullptr && (r != 0 || !error_message.empty())) {
- *warnings << "parse error setting '" << opt.name << "' to '" << val
- << "'";
- if (!error_message.empty()) {
- *warnings << " (" << error_message << ")";
- }
- *warnings << std::endl;
- }
- }
- }
-
- // subsystems?
- for (size_t o = 0; o < subsys.get_num(); o++) {
- std::string as_option("debug_");
- as_option += subsys.get_name(o);
- std::string val;
- int ret = _get_val_from_conf_file(my_sections, as_option.c_str(), val, false);
- if (ret == 0) {
- int log, gather;
- int r = sscanf(val.c_str(), "%d/%d", &log, &gather);
- if (r >= 1) {
- if (r < 2)
- gather = log;
- // cout << "config subsys " << subsys.get_name(o) << " log " << log << " gather " << gather << std::endl;
- subsys.set_log_level(o, log);
- subsys.set_gather_level(o, gather);
- }
- }
- }
-
- // Warn about section names that look like old-style section names
- std::deque < std::string > old_style_section_names;
- for (ConfFile::const_section_iter_t s = cf.sections_begin();
- s != cf.sections_end(); ++s) {
- const string &str(s->first);
- if (((str.find("mds") == 0) || (str.find("mon") == 0) ||
- (str.find("osd") == 0)) && (str.size() > 3) && (str[3] != '.')) {
- old_style_section_names.push_back(str);
- }
- }
- if (!old_style_section_names.empty()) {
- ostringstream oss;
- cerr << "ERROR! old-style section name(s) found: ";
- string sep;
- for (std::deque < std::string >::const_iterator os = old_style_section_names.begin();
- os != old_style_section_names.end(); ++os) {
- cerr << sep << *os;
- sep = ", ";
- }
- cerr << ". Please use the new style section names that include a period.";
- }
- return 0;
-}
-
-void md_config_t::parse_env()
-{
- Mutex::Locker l(lock);
- if (internal_safe_to_start_threads)
- return;
- if (getenv("CEPH_KEYRING")) {
- set_val_or_die("keyring", getenv("CEPH_KEYRING"));
- }
-}
-
-void md_config_t::show_config(std::ostream& out)
-{
- Mutex::Locker l(lock);
- _show_config(&out, NULL);
-}
-
-void md_config_t::show_config(Formatter *f)
-{
- Mutex::Locker l(lock);
- _show_config(NULL, f);
-}
-
-void md_config_t::_show_config(std::ostream *out, Formatter *f)
-{
- if (out) {
- *out << "name = " << name << std::endl;
- *out << "cluster = " << cluster << std::endl;
- }
- if (f) {
- f->dump_string("name", stringify(name));
- f->dump_string("cluster", cluster);
- }
- for (size_t o = 0; o < subsys.get_num(); o++) {
- if (out)
- *out << "debug_" << subsys.get_name(o)
- << " = " << subsys.get_log_level(o)
- << "/" << subsys.get_gather_level(o) << std::endl;
- if (f) {
- ostringstream ss;
- std::string debug_name = "debug_";
- debug_name += subsys.get_name(o);
- ss << subsys.get_log_level(o)
- << "/" << subsys.get_gather_level(o);
- f->dump_string(debug_name.c_str(), ss.str());
- }
- }
- for (const auto& i: schema) {
- const Option &opt = i.second;
- char *buf;
- _get_val(opt.name, &buf, -1);
- if (out)
- *out << opt.name << " = " << buf << std::endl;
- if (f)
- f->dump_string(opt.name.c_str(), buf);
- free(buf);
- }
-}
-
-int md_config_t::parse_argv(std::vector<const char*>& args)
-{
- Mutex::Locker l(lock);
- if (internal_safe_to_start_threads) {
- return -ENOSYS;
- }
-
- bool show_config = false;
- bool show_config_value = false;
- string show_config_value_arg;
-
- // In this function, don't change any parts of the configuration directly.
- // Instead, use set_val to set them. This will allow us to send the proper
- // observer notifications later.
- std::string val;
- for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) {
- if (strcmp(*i, "--") == 0) {
- /* Normally we would use ceph_argparse_double_dash. However, in this
- * function we *don't* want to remove the double dash, because later
- * argument parses will still need to see it. */
- break;
- }
- else if (ceph_argparse_flag(args, i, "--show_conf", (char*)NULL)) {
- cerr << cf << std::endl;
- _exit(0);
- }
- else if (ceph_argparse_flag(args, i, "--show_config", (char*)NULL)) {
- show_config = true;
- }
- else if (ceph_argparse_witharg(args, i, &val, "--show_config_value", (char*)NULL)) {
- show_config_value = true;
- show_config_value_arg = val;
- }
- else if (ceph_argparse_flag(args, i, "--foreground", "-f", (char*)NULL)) {
- set_val_or_die("daemonize", "false");
- }
- else if (ceph_argparse_flag(args, i, "-d", (char*)NULL)) {
- set_val_or_die("daemonize", "false");
- set_val_or_die("log_file", "");
- set_val_or_die("log_to_stderr", "true");
- set_val_or_die("err_to_stderr", "true");
- set_val_or_die("log_to_syslog", "false");
- }
- // Some stuff that we wanted to give universal single-character options for
- // Careful: you can burn through the alphabet pretty quickly by adding
- // to this list.
- else if (ceph_argparse_witharg(args, i, &val, "--monmap", "-M", (char*)NULL)) {
- set_val_or_die("monmap", val.c_str());
- }
- else if (ceph_argparse_witharg(args, i, &val, "--mon_host", "-m", (char*)NULL)) {
- set_val_or_die("mon_host", val.c_str());
- }
- else if (ceph_argparse_witharg(args, i, &val, "--bind", (char*)NULL)) {
- set_val_or_die("public_addr", val.c_str());
- }
- else if (ceph_argparse_witharg(args, i, &val, "--keyfile", "-K", (char*)NULL)) {
- set_val_or_die("keyfile", val.c_str());
- }
- else if (ceph_argparse_witharg(args, i, &val, "--keyring", "-k", (char*)NULL)) {
- set_val_or_die("keyring", val.c_str());
- }
- else if (ceph_argparse_witharg(args, i, &val, "--client_mountpoint", "-r", (char*)NULL)) {
- set_val_or_die("client_mountpoint", val.c_str());
- }
- else {
- int r = parse_option(args, i, NULL);
- if (r < 0) {
- return r;
- }
- }
- }
-
- if (show_config) {
- expand_all_meta();
- _show_config(&cout, NULL);
- _exit(0);
- }
-
- if (show_config_value) {
- char *buf = 0;
- int r = _get_val(show_config_value_arg.c_str(), &buf, -1);
- if (r < 0) {
- if (r == -ENOENT)
- std::cerr << "failed to get config option '" <<
- show_config_value_arg << "': option not found" << std::endl;
- else
- std::cerr << "failed to get config option '" <<
- show_config_value_arg << "': " << cpp_strerror(r) << std::endl;
- _exit(1);
- }
- string s = buf;
- expand_meta(s, &std::cerr);
- std::cout << s << std::endl;
- _exit(0);
- }
-
- return 0;
-}
-
-int md_config_t::parse_option(std::vector<const char*>& args,
- std::vector<const char*>::iterator& i,
- ostream *oss)
-{
- int ret = 0;
- size_t o = 0;
- std::string val;
-
- // subsystems?
- for (o = 0; o < subsys.get_num(); o++) {
- std::string as_option("--");
- as_option += "debug_";
- as_option += subsys.get_name(o);
- ostringstream err;
- if (ceph_argparse_witharg(args, i, &val, err,
- as_option.c_str(), (char*)NULL)) {
- if (err.tellp()) {
- if (oss) {
- *oss << err.str();
- }
- ret = -EINVAL;
- break;
- }
- int log, gather;
- int r = sscanf(val.c_str(), "%d/%d", &log, &gather);
- if (r >= 1) {
- if (r < 2)
- gather = log;
- // cout << "subsys " << subsys.get_name(o) << " log " << log << " gather " << gather << std::endl;
- subsys.set_log_level(o, log);
- subsys.set_gather_level(o, gather);
- if (oss)
- *oss << "debug_" << subsys.get_name(o) << "=" << log << "/" << gather << " ";
- }
- break;
- }
- }
- if (o < subsys.get_num()) {
- return ret;
- }
-
- std::string option_name;
- std::string error_message;
- o = 0;
- for (const auto& opt_iter: schema) {
- const Option &opt = opt_iter.second;
- ostringstream err;
- std::string as_option("--");
- as_option += opt.name;
- option_name = opt.name;
- if (opt.type == Option::TYPE_BOOL) {
- int res;
- if (ceph_argparse_binary_flag(args, i, &res, oss, as_option.c_str(),
- (char*)NULL)) {
- if (res == 0)
- ret = set_val_impl("false", opt, &error_message);
- else if (res == 1)
- ret = set_val_impl("true", opt, &error_message);
- else
- ret = res;
- break;
- } else {
- std::string no("--no-");
- no += opt.name;
- if (ceph_argparse_flag(args, i, no.c_str(), (char*)NULL)) {
- ret = set_val_impl("false", opt, &error_message);
- break;
- }
- }
- } else if (ceph_argparse_witharg(args, i, &val, err,
- as_option.c_str(), (char*)NULL)) {
- if (!err.str().empty()) {
- error_message = err.str();
- ret = -EINVAL;
- break;
- }
- if (oss && ((!opt.is_safe()) &&
- (observers.find(opt.name) == observers.end()))) {
- *oss << "You cannot change " << opt.name << " using injectargs.\n";
- return -ENOSYS;
- }
- ret = set_val_impl(val, opt, &error_message);
- break;
- }
- ++o;
- }
-
- if (ret != 0 || !error_message.empty()) {
- assert(!option_name.empty());
- if (oss) {
- *oss << "Parse error setting " << option_name << " to '"
- << val << "' using injectargs";
- if (!error_message.empty()) {
- *oss << " (" << error_message << ")";
- }
- *oss << ".\n";
- } else {
- cerr << "parse error setting '" << option_name << "' to '"
- << val << "'";
- if (!error_message.empty()) {
- cerr << " (" << error_message << ")";
- }
- cerr << "\n" << std::endl;
- }
- }
-
- if (o == schema.size()) {
- // ignore
- ++i;
- }
- return ret;
-}
-
-int md_config_t::parse_injectargs(std::vector<const char*>& args,
- std::ostream *oss)
-{
- assert(lock.is_locked());
- int ret = 0;
- for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) {
- int r = parse_option(args, i, oss);
- if (r < 0)
- ret = r;
- }
- return ret;
-}
-
-void md_config_t::apply_changes(std::ostream *oss)
-{
- Mutex::Locker l(lock);
- /*
- * apply changes until the cluster name is assigned
- */
- if (cluster.size())
- _apply_changes(oss);
-}
-
-bool md_config_t::_internal_field(const string& s)
-{
- if (s == "internal_safe_to_start_threads")
- return true;
- return false;
-}
-
-void md_config_t::_apply_changes(std::ostream *oss)
-{
- /* Maps observers to the configuration options that they care about which
- * have changed. */
- typedef std::map < md_config_obs_t*, std::set <std::string> > rev_obs_map_t;
-
- expand_all_meta();
-
- // expand_all_meta could have modified anything. Copy it all out again.
- for (const auto &i : legacy_values) {
- const auto &name = i.first;
- const auto &option = schema.at(name);
- auto ptr = i.second;
-
- update_legacy_val(option, ptr);
- }
-
- // create the reverse observer mapping, mapping observers to the set of
- // changed keys that they'll get.
- rev_obs_map_t robs;
- std::set <std::string> empty_set;
- char buf[128];
- char *bufptr = (char*)buf;
- for (changed_set_t::const_iterator c = changed.begin();
- c != changed.end(); ++c) {
- const std::string &key(*c);
- pair < obs_map_t::iterator, obs_map_t::iterator >
- range(observers.equal_range(key));
- if ((oss) &&
- (!_get_val(key.c_str(), &bufptr, sizeof(buf))) &&
- !_internal_field(key)) {
- (*oss) << key << " = '" << buf << "' ";
- if (range.first == range.second) {
- (*oss) << "(not observed, change may require restart) ";
- }
- }
- for (obs_map_t::iterator r = range.first; r != range.second; ++r) {
- rev_obs_map_t::value_type robs_val(r->second, empty_set);
- pair < rev_obs_map_t::iterator, bool > robs_ret(robs.insert(robs_val));
- std::set <std::string> &keys(robs_ret.first->second);
- keys.insert(key);
- }
- }
-
- changed.clear();
-
- // Make any pending observer callbacks
- for (rev_obs_map_t::const_iterator r = robs.begin(); r != robs.end(); ++r) {
- md_config_obs_t *obs = r->first;
- obs->handle_conf_change(this, r->second);
- }
-
-}
-
-void md_config_t::call_all_observers()
-{
- std::map<md_config_obs_t*,std::set<std::string> > obs;
- {
- Mutex::Locker l(lock);
-
- expand_all_meta();
-
- for (auto r = observers.begin(); r != observers.end(); ++r) {
- obs[r->second].insert(r->first);
- }
- }
- for (auto p = obs.begin();
- p != obs.end();
- ++p) {
- p->first->handle_conf_change(this, p->second);
- }
-}
-
-int md_config_t::injectargs(const std::string& s, std::ostream *oss)
-{
- int ret;
- Mutex::Locker l(lock);
- char b[s.length()+1];
- strcpy(b, s.c_str());
- std::vector<const char*> nargs;
- char *p = b;
- while (*p) {
- nargs.push_back(p);
- while (*p && *p != ' ') p++;
- if (!*p)
- break;
- *p++ = 0;
- while (*p && *p == ' ') p++;
- }
- ret = parse_injectargs(nargs, oss);
- if (!nargs.empty()) {
- *oss << " failed to parse arguments: ";
- std::string prefix;
- for (std::vector<const char*>::const_iterator i = nargs.begin();
- i != nargs.end(); ++i) {
- *oss << prefix << *i;
- prefix = ",";
- }
- *oss << "\n";
- ret = -EINVAL;
- }
- _apply_changes(oss);
- return ret;
-}
-
-void md_config_t::set_val_or_die(const std::string &key,
- const std::string &val,
- bool meta)
-{
- std::stringstream err;
- int ret = set_val(key, val, meta, &err);
- if (ret != 0) {
- std::cerr << "set_val_or_die(" << key << "): " << err.str();
- }
- assert(ret == 0);
-}
-
-int md_config_t::set_val(const std::string &key, const char *val,
- bool meta, std::stringstream *err_ss)
-{
- Mutex::Locker l(lock);
- if (key.empty()) {
- if (err_ss) *err_ss << "No key specified";
- return -EINVAL;
- }
- if (!val) {
- return -EINVAL;
- }
-
- std::string v(val);
- if (meta)
- expand_meta(v, &std::cerr);
-
- string k(ConfFile::normalize_key_name(key));
-
- // subsystems?
- if (strncmp(k.c_str(), "debug_", 6) == 0) {
- for (size_t o = 0; o < subsys.get_num(); o++) {
- std::string as_option = "debug_" + subsys.get_name(o);
- if (k == as_option) {
- int log, gather;
- int r = sscanf(v.c_str(), "%d/%d", &log, &gather);
- if (r >= 1) {
- if (r < 2) {
- gather = log;
- }
- subsys.set_log_level(o, log);
- subsys.set_gather_level(o, gather);
- if (err_ss) *err_ss << "Set " << k << " to " << log << "/" << gather;
- return 0;
- }
- if (err_ss) {
- *err_ss << "Invalid debug level, should be <int> or <int>/<int>";
- }
- return -EINVAL;
- }
- }
- }
-
- const auto &opt_iter = schema.find(k);
- if (opt_iter != schema.end()) {
- const Option &opt = opt_iter->second;
- if ((!opt.is_safe()) && internal_safe_to_start_threads) {
- // If threads have been started and the option is not thread safe
- if (observers.find(opt.name) == observers.end()) {
- // And there is no observer to safely change it...
- // You lose.
- if (err_ss) *err_ss << "Configuration option '" << key << "' may "
- "not be modified at runtime";
- return -ENOSYS;
- }
- }
-
- std::string error_message;
- int r = set_val_impl(v, opt, &error_message);
- if (r == 0) {
- if (err_ss) *err_ss << "Set " << opt.name << " to " << v;
- } else {
- if (err_ss) *err_ss << error_message;
- }
- return r;
- }
-
- if (err_ss) *err_ss << "Configuration option not found: '" << key << "'";
- return -ENOENT;
-}
-
-
-int md_config_t::get_val(const std::string &key, char **buf, int len) const
-{
- Mutex::Locker l(lock);
- return _get_val(key, buf,len);
-}
-
-Option::value_t md_config_t::get_val_generic(const std::string &key) const
-{
- Mutex::Locker l(lock);
- return _get_val(key);
-}
-
-Option::value_t md_config_t::_get_val(const std::string &key) const
-{
- assert(lock.is_locked());
-
- if (key.empty()) {
- return Option::value_t(boost::blank());
- }
-
- // In key names, leading and trailing whitespace are not significant.
- string k(ConfFile::normalize_key_name(key));
-
- const auto &opt_iter = schema.find(k);
- if (opt_iter != schema.end()) {
- // Using .at() is safe because all keys in the schema always have
- // entries in ::values
- return values.at(k);
- } else {
- return Option::value_t(boost::blank());
- }
-}
-
-int md_config_t::_get_val(const std::string &key, std::string *value) const {
- assert(lock.is_locked());
-
- std::string normalized_key(ConfFile::normalize_key_name(key));
- Option::value_t config_value = _get_val(normalized_key.c_str());
- if (!boost::get<boost::blank>(&config_value)) {
- ostringstream oss;
- if (bool *flag = boost::get<bool>(&config_value)) {
- oss << (*flag ? "true" : "false");
- } else if (double *dp = boost::get<double>(&config_value)) {
- oss << std::fixed << *dp;
- } else {
- oss << config_value;
- }
- *value = oss.str();
- return 0;
- }
- return -ENOENT;
-}
-
-int md_config_t::_get_val(const std::string &key, char **buf, int len) const
-{
- assert(lock.is_locked());
-
- if (key.empty())
- return -EINVAL;
-
- string val ;
- if (_get_val(key, &val) == 0) {
- int l = val.length() + 1;
- if (len == -1) {
- *buf = (char*)malloc(l);
- if (!*buf)
- return -ENOMEM;
- strncpy(*buf, val.c_str(), l);
- return 0;
- }
- snprintf(*buf, len, "%s", val.c_str());
- return (l > len) ? -ENAMETOOLONG : 0;
- }
-
- string k(ConfFile::normalize_key_name(key));
- // subsys?
- for (size_t o = 0; o < subsys.get_num(); o++) {
- std::string as_option = "debug_" + subsys.get_name(o);
- if (k == as_option) {
- if (len == -1) {
- *buf = (char*)malloc(20);
- len = 20;
- }
- int l = snprintf(*buf, len, "%d/%d", subsys.get_log_level(o), subsys.get_gather_level(o));
- return (l == len) ? -ENAMETOOLONG : 0;
- }
- }
-
- // couldn't find a configuration option with key 'k'
- return -ENOENT;
-}
-
-void md_config_t::get_all_keys(std::vector<std::string> *keys) const {
- const std::string negative_flag_prefix("no_");
-
- keys->clear();
- keys->reserve(schema.size());
- for (const auto &i: schema) {
- const Option &opt = i.second;
- keys->push_back(opt.name);
- if (opt.type == Option::TYPE_BOOL) {
- keys->push_back(negative_flag_prefix + opt.name);
- }
- }
- for (size_t i = 0; i < subsys.get_num(); ++i) {
- keys->push_back("debug_" + subsys.get_name(i));
- }
-}
-
-/* The order of the sections here is important. The first section in the
- * vector is the "highest priority" section; if we find it there, we'll stop
- * looking. The lowest priority section is the one we look in only if all
- * others had nothing. This should always be the global section.
- */
-void md_config_t::get_my_sections(std::vector <std::string> §ions) const
-{
- Mutex::Locker l(lock);
- _get_my_sections(sections);
-}
-
-void md_config_t::_get_my_sections(std::vector <std::string> §ions) const
-{
- assert(lock.is_locked());
- sections.push_back(name.to_str());
-
- sections.push_back(name.get_type_name());
-
- sections.push_back("global");
-}
-
-// Return a list of all sections
-int md_config_t::get_all_sections(std::vector <std::string> §ions) const
-{
- Mutex::Locker l(lock);
- for (ConfFile::const_section_iter_t s = cf.sections_begin();
- s != cf.sections_end(); ++s) {
- sections.push_back(s->first);
- }
- return 0;
-}
-
-int md_config_t::get_val_from_conf_file(const std::vector <std::string> §ions,
- const std::string &key, std::string &out, bool emeta) const
-{
- Mutex::Locker l(lock);
- return _get_val_from_conf_file(sections, key, out, emeta);
-}
-
-int md_config_t::_get_val_from_conf_file(const std::vector <std::string> §ions,
- const std::string &key, std::string &out, bool emeta) const
-{
- assert(lock.is_locked());
- std::vector <std::string>::const_iterator s = sections.begin();
- std::vector <std::string>::const_iterator s_end = sections.end();
- for (; s != s_end; ++s) {
- int ret = cf.read(s->c_str(), key, out);
- if (ret == 0) {
- if (emeta)
- expand_meta(out, &std::cerr);
- return 0;
- }
- else if (ret != -ENOENT)
- return ret;
- }
- return -ENOENT;
-}
-
-int md_config_t::set_val_impl(const std::string &raw_val, const Option &opt,
- std::string *error_message)
-{
- assert(lock.is_locked());
-
- std::string val = raw_val;
-
- int r = opt.pre_validate(&val, error_message);
- if (r != 0) {
- return r;
- }
-
- Option::value_t new_value;
- if (opt.type == Option::TYPE_INT) {
- int64_t f = strict_si_cast<int64_t>(val.c_str(), error_message);
- if (!error_message->empty()) {
- return -EINVAL;
- }
- new_value = f;
- } else if (opt.type == Option::TYPE_UINT) {
- uint64_t f = strict_si_cast<uint64_t>(val.c_str(), error_message);
- if (!error_message->empty()) {
- return -EINVAL;
- }
- new_value = f;
- } else if (opt.type == Option::TYPE_STR) {
- new_value = val;
- } else if (opt.type == Option::TYPE_FLOAT) {
- double f = strict_strtod(val.c_str(), error_message);
- if (!error_message->empty()) {
- return -EINVAL;
- } else {
- new_value = f;
- }
- } else if (opt.type == Option::TYPE_BOOL) {
- if (strcasecmp(val.c_str(), "false") == 0) {
- new_value = false;
- } else if (strcasecmp(val.c_str(), "true") == 0) {
- new_value = true;
- } else {
- int b = strict_strtol(val.c_str(), 10, error_message);
- if (!error_message->empty()) {
- return -EINVAL;
- }
- new_value = !!b;
- }
- } else if (opt.type == Option::TYPE_ADDR) {
- entity_addr_t addr;
- if (!addr.parse(val.c_str())){
- return -EINVAL;
- }
- new_value = addr;
- } else if (opt.type == Option::TYPE_UUID) {
- uuid_d uuid;
- if (!uuid.parse(val.c_str())) {
- return -EINVAL;
- }
- new_value = uuid;
- } else {
- ceph_abort();
- }
-
- r = opt.validate(new_value, error_message);
- if (r != 0) {
- return r;
- }
-
-
- // Apply the value to its entry in the `values` map
- values[opt.name] = new_value;
-
- // Apply the value to its legacy field, if it has one
- auto legacy_ptr_iter = legacy_values.find(std::string(opt.name));
- if (legacy_ptr_iter != legacy_values.end()) {
- update_legacy_val(opt, legacy_ptr_iter->second);
- }
-
- changed.insert(opt.name);
- return 0;
-}
-
-/**
- * Handles assigning from a variant-of-types to a variant-of-pointers-to-types
- */
-class assign_visitor : public boost::static_visitor<>
-{
- md_config_t *conf;
- Option::value_t val;
- public:
-
- assign_visitor(md_config_t *conf_, Option::value_t val_)
- : conf(conf_), val(val_)
- {}
-
- template <typename T>
- void operator()( T md_config_t::* ptr) const
- {
- T *member = const_cast<T *>(&(conf->*(boost::get<const T md_config_t::*>(ptr))));
-
- *member = boost::get<T>(val);
- }
-};
-
-void md_config_t::update_legacy_val(const Option &opt,
- md_config_t::member_ptr_t member_ptr)
-{
- if (boost::get<boost::blank>(&values.at(opt.name))) {
- // This shouldn't happen, but if it does then just don't even
- // try to assign to the legacy field.
- return;
- }
-
- boost::apply_visitor(assign_visitor(this, values.at(opt.name)), member_ptr);
-}
-
-
-static const char *CONF_METAVARIABLES[] = {
- "data_dir", // put this first: it may contain some of the others
- "cluster", "type", "name", "host", "num", "id", "pid", "cctid"
-};
-static const int NUM_CONF_METAVARIABLES =
- (sizeof(CONF_METAVARIABLES) / sizeof(CONF_METAVARIABLES[0]));
-
-void md_config_t::expand_all_meta()
-{
- // Expand all metavariables
- ostringstream oss;
- for (const auto &i : schema) {
- const Option &opt = i.second;
-
- if (opt.type == Option::TYPE_STR) {
- list<const Option*> stack;
- std::string *str = boost::get<std::string>(&(values.at(opt.name)));
- assert(str != nullptr); // Non-string values should never get in
- expand_meta(*str, &opt, stack, &oss);
- }
- }
- cerr << oss.str();
-}
-
-bool md_config_t::expand_meta(std::string &val,
- std::ostream *oss) const
-{
- list<const Option*> stack;
- return expand_meta(val, NULL, stack, oss);
-}
-
-bool md_config_t::expand_meta(std::string &origval,
- const Option *opt,
- std::list<const Option *> stack,
- std::ostream *oss) const
-{
- assert(lock.is_locked());
-
- // no $ means no variable expansion is necessary
- if (origval.find("$") == string::npos)
- return false;
-
- // ignore an expansion loop and create a human readable
- // message about it
- if (opt) {
- for (const auto stack_ptr : stack) {
- if (opt->name == stack_ptr->name) {
- *oss << "variable expansion loop at "
- << opt->name << "=" << origval << std::endl;
- *oss << "expansion stack: " << std::endl;
- for (const auto j : stack) {
- std::string val;
- _get_val(j->name, &val);
- *oss << j->name << "=" << val << std::endl;
- }
- return false;
- }
- }
-
- stack.push_front(opt);
- }
-
- bool found_meta = false;
- string out;
- string val = origval;
- for (string::size_type s = 0; s < val.size(); ) {
- if (val[s] != '$') {
- out += val[s++];
- continue;
- }
-
- // try to parse the variable name into var, either \$\{(.+)\} or
- // \$[a-z\_]+
- const char *valid_chars = "abcdefghijklmnopqrstuvwxyz_";
- string var;
- size_t endpos = 0;
- if (val[s+1] == '{') {
- // ...${foo_bar}...
- endpos = val.find_first_not_of(valid_chars, s+2);
- if (endpos != std::string::npos &&
- val[endpos] == '}') {
- var = val.substr(s+2, endpos-s-2);
- endpos++;
- }
- } else {
- // ...$foo...
- endpos = val.find_first_not_of(valid_chars, s+1);
- if (endpos != std::string::npos)
- var = val.substr(s+1, endpos-s-1);
- else
- var = val.substr(s+1);
- }
-
- bool expanded = false;
- if (var.length()) {
- // special metavariable?
- for (int i = 0; i < NUM_CONF_METAVARIABLES; ++i) {
- if (var != CONF_METAVARIABLES[i])
- continue;
- //cout << " meta match of " << var << " " << CONF_METAVARIABLES[i] << std::endl;
- if (var == "type")
- out += name.get_type_name();
- else if (var == "cluster")
- out += cluster;
- else if (var == "name")
- out += name.to_cstr();
- else if (var == "host")
- {
- if (host == "")
- out += ceph_get_short_hostname();
- else
- out += host;
- }
- else if (var == "num")
- out += name.get_id().c_str();
- else if (var == "id")
- out += name.get_id().c_str();
- else if (var == "pid")
- out += stringify(getpid());
- else if (var == "cctid")
- out += stringify((unsigned long long)this);
- else if (var == "data_dir") {
- if (data_dir_option.length()) {
- char *vv = NULL;
- _get_val(data_dir_option.c_str(), &vv, -1);
- string tmp = vv;
- free(vv);
- expand_meta(tmp, NULL, stack, oss);
- out += tmp;
- } else {
- // this isn't really right, but it'll result in a mangled
- // non-existent path that will fail any search list
- out += "$data_dir";
- }
- } else
- ceph_abort(); // unreachable
- expanded = true;
- }
-
- if (!expanded) {
- // config option?
- const auto other_opt_iter = schema.find(var);
- if (other_opt_iter != schema.end()) {
- const Option &other_opt = other_opt_iter->second;
- if (other_opt.type == Option::TYPE_STR) {
- // The referenced option is a string, it may need substitution
- // before inserting.
- Option::value_t *other_val_ptr = const_cast<Option::value_t*>(&(values.at(other_opt.name)));
- std::string *other_opt_val = boost::get<std::string>(other_val_ptr);
- expand_meta(*other_opt_val, &other_opt, stack, oss);
- out += *other_opt_val;
- } else {
- // The referenced option is not a string: retrieve and insert
- // its stringized form.
- char *vv = NULL;
- _get_val(other_opt.name, &vv, -1);
- out += vv;
- free(vv);
- }
- expanded = true;
- }
- }
- }
-
- if (expanded) {
- found_meta = true;
- s = endpos;
- } else {
- out += val[s++];
- }
- }
- // override the original value with the expanded value
- origval = out;
- return found_meta;
-}
-
-void md_config_t::diff(
- const md_config_t *other,
- map<string, pair<string, string> > *diff,
- set<string> *unknown)
-{
- diff_helper(other, diff, unknown);
-}
-void md_config_t::diff(
- const md_config_t *other,
- map<string, pair<string, string> > *diff,
- set<string> *unknown, const string& setting)
-{
- diff_helper(other, diff, unknown, setting);
-}
-
-void md_config_t::diff_helper(
- const md_config_t *other,
- map<string,pair<string,string> > *diff,
- set<string> *unknown, const string& setting)
-{
- Mutex::Locker l(lock);
-
- char local_buf[4096];
- char other_buf[4096];
- for (const auto &i : schema) {
- const Option &opt = i.second;
- if (!setting.empty()) {
- if (setting != opt.name) {
- continue;
- }
- }
- memset(local_buf, 0, sizeof(local_buf));
- memset(other_buf, 0, sizeof(other_buf));
-
- char *other_val = other_buf;
- int err = other->get_val(opt.name, &other_val, sizeof(other_buf));
- if (err < 0) {
- if (err == -ENOENT) {
- unknown->insert(opt.name);
- }
- continue;
- }
-
- char *local_val = local_buf;
- err = _get_val(opt.name, &local_val, sizeof(local_buf));
- if (err != 0)
- continue;
-
- if (strcmp(local_val, other_val))
- diff->insert(make_pair(opt.name, make_pair(local_val, other_val)));
- else if (!setting.empty()) {
- diff->insert(make_pair(opt.name, make_pair(local_val, other_val)));
- break;
- }
- }
-}
-
-void md_config_t::complain_about_parse_errors(CephContext *cct)
-{
- ::complain_about_parse_errors(cct, &parse_errors);
-}
-
Code Review / stor4nfv.git / blobdiff