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/* Copyright 2016-present Facebook, Inc.
* Licensed under the Apache License, Version 2.0 */
#pragma once
#include "watchman_system.h"
#include <future>
#include <vector>
#include "scm/SCM.h"
#include "watchman_perf.h"
#include "watchman_query.h"
#include "watchman_string.h"
struct watchman_file;
struct watchman_dir;
struct watchman_glob_tree;
namespace watchman {
class QueryableView : public std::enable_shared_from_this<QueryableView> {
public:
virtual ~QueryableView();
/** Perform a time-based (since) query and emit results to the supplied
* query context */
virtual void timeGenerator(w_query* query, struct w_query_ctx* ctx) const;
/** Walks all files with the suffix(es) configured in the query */
virtual void suffixGenerator(w_query* query, struct w_query_ctx* ctx) const;
/** Walks files that match the supplied set of paths */
virtual void pathGenerator(w_query* query, struct w_query_ctx* ctx) const;
virtual void globGenerator(w_query* query, struct w_query_ctx* ctx) const;
virtual void allFilesGenerator(w_query* query, struct w_query_ctx* ctx) const;
virtual ClockPosition getMostRecentRootNumberAndTickValue() const = 0;
virtual w_string getCurrentClockString() const = 0;
virtual uint32_t getLastAgeOutTickValue() const;
virtual time_t getLastAgeOutTimeStamp() const;
virtual void ageOut(w_perf_t& sample, std::chrono::seconds minAge);
virtual bool syncToNow(std::chrono::milliseconds timeout) = 0;
// Specialized query function that is used to test whether
// version control files exist as part of some settling handling.
// It should query the view and return true if any of the named
// files current exist in the view.
virtual bool doAnyOfTheseFilesExist(
const std::vector<w_string>& fileNames) const = 0;
bool isVCSOperationInProgress() const;
// Start up any helper threads
virtual void startThreads(const std::shared_ptr<w_root_t>& root);
// Request that helper threads shutdown (but does not join them)
virtual void signalThreads();
// Request that helper threads wake up and re-evaluate their state
virtual void wakeThreads();
virtual const w_string& getName() const = 0;
virtual std::shared_future<void> waitUntilReadyToQuery(
const std::shared_ptr<w_root_t>& root) = 0;
// Return the SCM detected for this watched root
virtual SCM* getSCM() const = 0;
};
}
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