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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#pragma once
#include <map>
#include <optional>
#include <ostream>
#include <string>
#include "include/utime.h"
#include "common/options.h"
#include "common/entity_name.h"
class CrushWrapper;
// the precedence is thus:
//
// global
// crush location (coarse to fine, ordered by type id)
// daemon type (e.g., osd)
// device class (osd only)
// crush location (coarse to fine, ordered by type id)
// daemon name (e.g., mds.foo)
//
// Note that this means that if we have
//
// config/host:foo/a = 1
// config/osd/rack:foo/a = 2
//
// then we get a = 2. The osd-level config wins, even though rack
// is less precise than host, because the crush limiters are only
// resolved within a section (global, per-daemon, per-instance).
struct OptionMask {
std::string location_type, location_value; ///< matches crush_location
std::string device_class; ///< matches device class
bool empty() const {
return location_type.size() == 0
&& location_value.size() == 0
&& device_class.size() == 0;
}
std::string to_str() const {
std::string r;
if (location_type.size()) {
r += location_type + ":" + location_value;
}
if (device_class.size()) {
if (r.size()) {
r += "/";
}
r += "class:" + device_class;
}
return r;
}
void dump(ceph::Formatter *f) const;
};
struct MaskedOption {
std::string raw_value; ///< raw, unparsed, unvalidated value
const Option *opt; ///< the option
OptionMask mask;
std::unique_ptr<const Option> unknown_opt; ///< if fabricated for an unknown option
std::string localized_name; ///< localized name for the option
MaskedOption(const Option *o, bool fab=false) : opt(o) {
if (fab) {
unknown_opt.reset(o);
}
}
MaskedOption(MaskedOption&& o) {
raw_value = std::move(o.raw_value);
opt = o.opt;
mask = std::move(o.mask);
unknown_opt = std::move(o.unknown_opt);
localized_name = std::move(o.localized_name);
}
const MaskedOption& operator=(const MaskedOption& o) = delete;
const MaskedOption& operator=(MaskedOption&& o) = delete;
/// return a precision metric (smaller is more precise)
int get_precision(const CrushWrapper *crush);
friend std::ostream& operator<<(std::ostream& out, const MaskedOption& o);
void dump(ceph::Formatter *f) const;
};
struct Section {
std::multimap<std::string,MaskedOption> options;
void clear() {
options.clear();
}
void dump(ceph::Formatter *f) const;
std::string get_minimal_conf() const;
};
struct ConfigMap {
Section global;
std::map<std::string,Section, std::less<>> by_type;
std::map<std::string,Section, std::less<>> by_id;
std::list<std::unique_ptr<Option>> stray_options;
Section *find_section(const std::string& name) {
if (name == "global") {
return &global;
}
auto i = by_type.find(name);
if (i != by_type.end()) {
return &i->second;
}
i = by_id.find(name);
if (i != by_id.end()) {
return &i->second;
}
return nullptr;
}
void clear() {
global.clear();
by_type.clear();
by_id.clear();
stray_options.clear();
}
void dump(ceph::Formatter *f) const;
std::map<std::string,std::string,std::less<>> generate_entity_map(
const EntityName& name,
const std::map<std::string,std::string>& crush_location,
const CrushWrapper *crush,
const std::string& device_class,
std::map<std::string,std::pair<std::string,const MaskedOption*>> *src=0);
void parse_key(
const std::string& key,
std::string *name,
std::string *who);
static bool parse_mask(
const std::string& in,
std::string *section,
OptionMask *mask);
};
struct ConfigChangeSet {
version_t version;
utime_t stamp;
std::string name;
// key -> (old value, new value)
std::map<std::string,std::pair<std::optional<std::string>,std::optional<std::string>>> diff;
void dump(ceph::Formatter *f) const;
void print(std::ostream& out) const;
};
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