Class: Doraemon::SQLiteDatabase

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/doraemon/sqlite_database.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SQLiteDatabase

Returns a new instance of SQLiteDatabase.



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# File 'lib/doraemon/sqlite_database.rb', line 29

def initialize
  self.connect
end

Instance Method Details

#active_scene(uid, scene_id) ⇒ Object 



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# File 'lib/doraemon/sqlite_database.rb', line 118

def active_scene(uid, scene_id)
  puts __method__.to_s
  @mutex.lock
  scenes = execute("SELECT * FROM scenes WHERE is_actived = true AND uid = #{uid}")
  if scenes.empty?
    execute("UPDATE scenes SET is_actived = true WHERE id = #{scene_id} AND uid = #{uid}")
    @mutex.unlock
    yield(true) if block_given?
  else
    scene = scenes.first
    execute("UPDATE scenes SET is_actived = false WHERE id = #{scene['id']}")
    execute("UPDATE scenes SET is_actived = true WHERE id = #{scene_id} AND uid = #{uid}")
    @mutex.unlock
    yield(true) if block_given?
  end
end

#add_scene(uid, name) {|scene| ... } ⇒ Object

给指定 uid 增加场景

Yields:

  • (scene) 


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# File 'lib/doraemon/sqlite_database.rb', line 92

def add_scene(uid, name)
  puts __method__.to_s
  @mutex.lock
  execute("INSERT INTO scenes (name, uid) VALUES ('#{name}', #{uid})")
  result = execute("SELECT seq FROM sqlite_sequence WHERE name = 'users'")
  id = result.first['seq']
  scene = {id: id, name: name, isActived: false}
  @mutex.unlock
  yield(scene) if block_given?
end

#connect ⇒ Object 



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# File 'lib/doraemon/sqlite_database.rb', line 15

def connect
  Dir.mkdir workdir unless File.exist?(workdir)
  puts "Database file path: #{database_file_path}"
  is_db_exist = File.exist? database_file_path
  puts "Database exist: #{is_db_exist}"
  @conn = SQLite3::Database.new database_file_path
  @conn.results_as_hash = true
  if !is_db_exist
    puts "Creating tables"
    create_tables
  end
  @mutex = Mutex.new
end

#connected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/doraemon/sqlite_database.rb', line 33

def connected?
  @conn != nil
end

#create_api(scene_id, path) {|api| ... } ⇒ Object

创建 scene_id 场景下名为 path 的 api

Yields:

  • (api) 


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# File 'lib/doraemon/sqlite_database.rb', line 170

def create_api(scene_id, path)
  puts __method__.to_s
  path = path[1, path.length] if path.start_with?('/')
  contents = Base64.strict_encode64('{
  "code": 0,
  "msg": "请求已成功处理",
  "res": {

  }
}')
  @mutex.lock
  execute("INSERT INTO apis (scene_id, path, contents) VALUES (#{scene_id}, '#{path}', '#{contents}')")
  result = execute("SELECT seq FROM sqlite_sequence WHERE name = 'apis'")
  @mutex.unlock
  id = result.first['seq']
  api = {id: id, path: path, enabled: true, contents: contents}
  yield(api) if block_given?
end

#create_tables ⇒ Object 



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# File 'lib/doraemon/sqlite_database.rb', line 240

def create_tables
  @conn.execute <<-SQL
    -- 服务基础配置表
    CREATE TABLE IF NOT EXISTS configure (
      id INTEGER PRIMARY KEY AUTOINCREMENT,   -- 配置 id
      next_port INTEGER NOT NULL              -- 下一个可用端口号
    );
  SQL
  @conn.execute <<-SQL
    -- 用户表
    CREATE TABLE IF NOT EXISTS users (
      uid INTEGER PRIMARY KEY AUTOINCREMENT,  -- 用户 id
      username VARCHAR(32) NOT NULL,          -- 用户名
      port INTEGER NOT NULL,                  -- 端口号
      reg_tm bigint NOT NULL                  -- 注册时间
    );
  SQL
  @conn.execute <<-SQL
    -- 服务基础配置表
    CREATE TABLE IF NOT EXISTS scenes (
      id INTEGER PRIMARY KEY AUTOINCREMENT,   -- 场景 id
      name VARCHAR(128) NOT NULL,             -- 场景名
      uid INTEGER NOT NULL,                   -- 场景的所属用户 id
      is_actived BOOLEAN DEFAULT false        -- 是否被激活了
    );
  SQL
  @conn.execute <<-SQL
    -- API 表
    CREATE TABLE IF NOT EXISTS apis (
      id INTEGER PRIMARY KEY AUTOINCREMENT,   -- API id
      scene_id INTEGER NOT NULL,              -- API 所属的场景 id
      path VARCHAR(128) NOT NULL,             -- API 路径
      enabled BOOLEAN DEFAULT true,           -- API 是否启用
      contents TEXT NOT NULL DEFAULT ''       -- API mock 内容
    );
  SQL
  @conn.execute <<-SQL
    -- 初始化下一个可用端口号为 20001
    insert into configure (next_port) values (20001);
  SQL
end

#database_file_path ⇒ Object 



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# File 'lib/doraemon/sqlite_database.rb', line 232

def database_file_path
  File.join(workdir, 'app.db')
end

#delete_api(id) {|true| ... } ⇒ Object

删除 api

Yields:

  • (true) 


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# File 'lib/doraemon/sqlite_database.rb', line 190

def delete_api(id)
  puts __method__.to_s
  @mutex.lock
  execute("DELETE FROM apis WHERE id = #{id}")
  @mutex.unlock
  yield(true) if block_given?
end

#execute(sql) ⇒ Object 



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# File 'lib/doraemon/sqlite_database.rb', line 37

def execute(sql)
  puts "    #{sql}"
  @conn.execute(sql)
end

#modify_api(id, enabled, path) {|true| ... } ⇒ Object

修改 api

Yields:

  • (true) 


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# File 'lib/doraemon/sqlite_database.rb', line 199

def modify_api(id, enabled, path)
  puts __method__.to_s
  @mutex.lock
  execute("UPDATE apis SET enabled = #{enabled}, path = '#{path}' WHERE id = #{id}")
  @mutex.unlock
  yield(true) if block_given?
end

#query_actived_scene(uid) {|scene_id| ... } ⇒ Object

查询用户当前激活的场景

Yields:

  • (scene_id) 


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# File 'lib/doraemon/sqlite_database.rb', line 222

def query_actived_scene(uid)
  puts __method__.to_s
  @mutex.lock
  result = execute("SELECT * FROM scenes WHERE uid = #{uid} AND is_actived = true")
  @mutex.unlock
  scene = result.first
  scene_id = scene.nil? ? -1 : scene['id'].to_i
  yield(scene_id) if block_given?
end

#query_api_contents(scene_id, path) {|api| ... } ⇒ Object

查询 scene_id 场景下指定路径的 api

Yields:

  • (api) 


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# File 'lib/doraemon/sqlite_database.rb', line 208

def query_api_contents(scene_id, path)
  puts __method__.to_s
  path = path[1, path.length-1] if path.start_with?('/')
  @mutex.lock
  result = execute("SELECT * FROM apis WHERE scene_id = #{scene_id} AND path = '#{path}' AND enabled = true")
  @mutex.unlock
  api = result.first
  if !api.nil?
    api['contents'] = Base64.strict_decode64(api['contents']).force_encoding("utf-8")
  end
  yield(api) if block_given?
end

#query_apis(scene_id) {|name, is_actived, apis| ... } ⇒ Object

获取所有 api

Yields:

  • (name, is_actived, apis) 


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# File 'lib/doraemon/sqlite_database.rb', line 136

def query_apis(scene_id)
  puts __method__.to_s
  @mutex.lock
  scene_result = execute("SELECT * FROM scenes WHERE id = #{scene_id}")
  name = scene_result.first['name']
  is_actived = scene_result.first['is_actived'] == 1
  result = execute("SELECT * FROM apis WHERE scene_id = #{scene_id} ORDER BY id")
  @mutex.unlock
  apis = []
  result.each do |x|
    apis << {
      id: x['id'], 
      path: x['path'], 
      enabled: x['enabled'] == 1, 
      contents: x['contents']
    }
  end
  yield(name, is_actived, apis) if block_given?
end

#query_scenes(uid) {|scenes| ... } ⇒ Object

获取对应 uid 的所有场景信息

Yields:

  • (scenes) 


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# File 'lib/doraemon/sqlite_database.rb', line 104

def query_scenes(uid)
  puts __method__.to_s
  @mutex.lock
  result = execute("SELECT * FROM scenes WHERE uid = #{uid} ORDER BY id")
  scenes = []
  result.each do |x|
    api_count_result = execute("SELECT COUNT(id) FROM apis WHERE scene_id = #{x['id']}")
    api_count = api_count_result.first["COUNT(id)"]
    scenes << {id: x['id'], name: x['name'], isActived: x['is_actived'] == 1, apiCount: api_count}
  end
  @mutex.unlock
  yield(scenes) if block_given?
end

#query_user(username) ⇒ Object

使用用户名查询端口



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# File 'lib/doraemon/sqlite_database.rb', line 62

def query_user(username)
  puts __method__.to_s
  @mutex.lock
  result = execute "SELECT * FROM users WHERE username = '#{username}'"
  @mutex.unlock
  if result.empty?
    puts "#{username} not register yet."
    yield if block_given?
  else
    user = result.first
    yield({port: user['port'].to_i, username: username, uid: user['uid'].to_i}) if block_given?
  end
end

#query_user_with_uid(uid) ⇒ Object

使用用户 id 查询用户信息



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# File 'lib/doraemon/sqlite_database.rb', line 77

def query_user_with_uid(uid)
  puts __method__.to_s
  @mutex.lock
  result = execute("SELECT * FROM users WHERE uid = #{uid}")
  @mutex.unlock
  if result.empty?
    puts "UID [#{uid}] not register yet."
    yield if block_given?
  else
    user = result.first
    yield({port: user['port'].to_i, username: user['username'], uid: user['uid'].to_i}) if block_given?
  end
end

#register_user(username) ⇒ Object

注册一个用户



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# File 'lib/doraemon/sqlite_database.rb', line 43

def register_user(username)
  puts __method__.to_s
  @mutex.lock
  usernames = execute("SELECT uid FROM users WHERE username = '#{username}'")
  if usernames.empty?
    next_port = execute("SELECT next_port FROM configure WHERE id = 1")
    port = next_port.first['next_port'].to_i
    reg_tm = (Time.now.to_f * 1000).to_i
    execute("INSERT INTO users (username, port, reg_tm) VALUES ('#{username}', #{port}, #{reg_tm})")
    execute("UPDATE configure SET next_port = #{port+1} WHERE id = 1")
    @mutex.unlock
    yield(true) if block_given?
  else
    @mutex.unlock
    yield(false) if block_given?
  end
end

#save_apis(scene_id, apis) {|true| ... } ⇒ Object

保存 scene_id 场景下的所有 api

Yields:

  • (true) 


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# File 'lib/doraemon/sqlite_database.rb', line 157

def save_apis(scene_id, apis)
  puts __method__.to_s
  @mutex.lock
  apis.each do |api|
    contents = Base64.strict_encode64(api['contents'])
    id = api['id']
    @conn.execute("UPDATE apis SET contents = '#{contents}' WHERE id = #{id}")
  end
  @mutex.unlock
  yield(true) if block_given?
end

#workdir ⇒ Object 



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# File 'lib/doraemon/sqlite_database.rb', line 236

def workdir
  File.join(Dir.home, '.doraemon')
end