77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
#pragma once
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#include <filesystem>
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#include <optional>
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#include <ostream>
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#include <string>
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#include <vector>
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namespace ota {
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enum class Phase {
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AConfirmed,
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PreparingB,
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BPrepared,
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TrialPending,
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TrialRunning,
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BConfirmed,
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RecoveryPending,
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RecoveryRunning,
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RecoveryChecked,
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SeparateRecoveryRequired
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};
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enum class Slot { A,
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B };
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const char *name(Phase phase);
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const char *name(Slot slot);
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struct State {
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Phase phase = Phase::AConfirmed;
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Slot normal = Slot::A;
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std::optional<Slot> trial;
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int attempts_left = 0;
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bool a_ready = true;
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bool b_ready = false;
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std::string outcome;
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};
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class Device {
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public:
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explicit Device(const std::filesystem::path &directory);
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const State &state() const { return state_; }
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std::optional<Slot> running() const { return running_; }
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void prepare(bool complete = true);
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void request_trial(int attempts = 2);
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Slot boot();
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void check(bool healthy);
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private:
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void save() const;
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State state_;
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std::filesystem::path path_;
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// Volatile: reconstructing a Device requires another boot before checks.
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std::optional<Slot> running_;
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};
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// Own only a freshly created directory and clean it up at scope exit.
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class TemporaryDirectory {
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public:
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TemporaryDirectory();
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~TemporaryDirectory();
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TemporaryDirectory(const TemporaryDirectory &) = delete;
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TemporaryDirectory &operator=(const TemporaryDirectory &) = delete;
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const std::filesystem::path &path() const { return path_; }
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private:
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std::filesystem::path path_;
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};
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const std::vector<std::string> &scenarios();
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Device run_scenario(const std::string &scenario,
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const std::filesystem::path &directory,
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std::ostream *output = nullptr);
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}// namespace ota
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