68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
 
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#pragma once
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#include <sys/types.h>
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#include <filesystem>
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#include <optional>
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#include <string>
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#include <vector>
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#include "network.hpp"
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namespace doos {
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class Container {
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public:
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Container(std::filesystem::path dir, std::string name) : dir_(std::move(dir)), name_(std::move(name)) {}
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static void validateName(const std::string& name);
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const std::string& name() const { return name_; }
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const std::filesystem::path& dir() const { return dir_; }
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std::filesystem::path rootfs() const { return dir_ / "rootfs"; }
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std::filesystem::path layer(const std::string& hostDir) const; // layers/<name>/{upper,work}
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std::filesystem::path privateDir(const std::string& hostDir) const;
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std::filesystem::path lockFile() const { return dir_ / "lock"; }
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std::filesystem::path pidFile() const { return dir_ / "pid"; }
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std::filesystem::path metaFile() const { return dir_ / "meta"; }
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NetMode net() const { return net_; }
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long created() const { return created_; }
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void create(NetMode net); // writes layout and meta
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void load(); // reads meta
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// Process id (outside view) of the container's init, if it is alive.
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std::optional<pid_t> runningPid() const;
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void recordPid(pid_t pid) const;
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void clearPid() const;
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// Creates the (empty) mountpoint skeleton and layer dirs. Idempotent.
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void prepareLayout() const;
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private:
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std::filesystem::path dir_;
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std::string name_;
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NetMode net_ = NetMode::Slirp;
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long created_ = 0;
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};
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class Store {
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public:
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explicit Store(std::filesystem::path root);
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static Store fromEnvironment();
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std::vector<Container> list() const;
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// Returns the container and whether it was created by this call.
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std::pair<Container, bool> getOrCreate(const std::string& name, std::optional<NetMode> net);
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// Dry-run unless confirmed. Returns a human-readable report line.
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std::string remove(const std::string& name, bool confirmed);
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const std::filesystem::path& root() const { return root_; }
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private:
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std::filesystem::path containersDir() const { return root_ / "containers"; }
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std::filesystem::path root_;
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};
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} // namespace doos
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