Module: Polyrun::Database::UrlBuilder::Connection

Defined in:
lib/polyrun/database/url_builder/connection.rb

Overview

Adapter detection, ENV fallbacks, and URL string construction (Rails DATABASE_URL conventions).

Class Method Summary collapse

Class Method Details

.build_database_url(database, conn) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 30

def build_database_url(database, conn)
  scheme = conn[:scheme].to_s
  host = conn[:host].to_s
  port = conn[:port].to_s
  user = conn[:user].to_s
  password = conn[:password]
  db = database.to_s

  case scheme
  when "postgres"
    ConnectionUrlBuilders.build_url_authority("postgres", host, port, user, password, db)
  when "mysql2", "trilogy"
    ConnectionUrlBuilders.build_url_authority(scheme, host, port, user, password, db)
  when "sqlserver"
    ConnectionUrlBuilders.build_url_authority("sqlserver", host, port, user, password, db)
  when "mongodb"
    ConnectionUrlBuilders.build_mongodb_url(host, port, user, password, db)
  when "sqlite3"
    ConnectionUrlBuilders.build_sqlite_url(db)
  else
    raise Polyrun::Error, "unsupported URL scheme: #{scheme.inspect}"
  end
end

.connection_profile(dh) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 54

def connection_profile(dh)
  name = ConnectionInfer.infer_adapter_name(dh)
  case name
  when "postgresql"
    {
      scheme: "postgres",
      nested_key: "postgresql",
      default_host: "localhost",
      default_port: "5432",
      default_user: "postgres",
      env_host: %w[PGHOST],
      env_port: %w[PGPORT],
      env_user: %w[PGUSER],
      env_password: %w[PGPASSWORD]
    }
  when "mysql2"
    nested_mysql_key(dh)
  when "trilogy"
    {
      scheme: "trilogy",
      nested_key: "trilogy",
      default_host: "localhost",
      default_port: "3306",
      default_user: "root",
      env_host: %w[MYSQL_HOST MYSQL_ADDRESS TRILOGY_HOST],
      env_port: %w[MYSQL_PORT MYSQL_TCP_PORT TRILOGY_PORT],
      env_user: %w[MYSQL_USER MYSQL_USERNAME TRILOGY_USER],
      env_password: %w[MYSQL_PASSWORD MYSQL_PWD TRILOGY_PASSWORD]
    }
  when "sqlserver"
    nested =
      if ConnectionInfer.nested_hash?(dh, "sqlserver")
        "sqlserver"
      else
        "mssql"
      end
    {
      scheme: "sqlserver",
      nested_key: nested,
      default_host: "localhost",
      default_port: "1433",
      default_user: "sa",
      env_host: %w[SQLSERVER_HOST MSSQL_HOST TDS_HOST],
      env_port: %w[SQLSERVER_PORT MSSQL_PORT TDS_PORT],
      env_user: %w[SQLSERVER_USER MSSQL_USER SA_USER],
      env_password: %w[SQLSERVER_PASSWORD MSSQL_PASSWORD SA_PASSWORD]
    }
  when "sqlite3"
    nested =
      if ConnectionInfer.nested_hash?(dh, "sqlite3")
        "sqlite3"
      else
        "sqlite"
      end
    {
      scheme: "sqlite3",
      nested_key: nested,
      default_host: "",
      default_port: "",
      default_user: "",
      env_host: [],
      env_port: [],
      env_user: [],
      env_password: []
    }
  when "mongodb"
    nested_mongo_key(dh)
  else
    raise Polyrun::Error, "unsupported databases.adapter: #{name.inspect}"
  end
end

.env_first(keys) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 177

def env_first(keys)
  Array(keys).each do |k|
    v = ENV[k]
    return v if present?(v)
  end
  nil
end

.merged_connection_block(dh, profile) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 166

def merged_connection_block(dh, profile)
  nk = profile[:nested_key]
  nested = dh[nk].is_a?(Hash) ? normalize_hash(dh[nk]) : {}
  top = dh.slice("host", "port", "username", "user", "password").transform_keys(&:to_s)
  nested.merge(top)
end

.nested_mongo_key(dh) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 146

def nested_mongo_key(dh)
  nested =
    if ConnectionInfer.nested_hash?(dh, "mongodb")
      "mongodb"
    else
      "mongo"
    end
  {
    scheme: "mongodb",
    nested_key: nested,
    default_host: "localhost",
    default_port: "27017",
    default_user: "",
    env_host: %w[MONGO_HOST MONGODB_HOST],
    env_port: %w[MONGO_PORT MONGODB_PORT],
    env_user: %w[MONGO_USER MONGODB_USER],
    env_password: %w[MONGO_PASSWORD MONGODB_PASSWORD]
  }
end

.nested_mysql_key(dh) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 126

def nested_mysql_key(dh)
  nested =
    if ConnectionInfer.nested_hash?(dh, "mysql2")
      "mysql2"
    else
      "mysql"
    end
  {
    scheme: "mysql2",
    nested_key: nested,
    default_host: "localhost",
    default_port: "3306",
    default_user: "root",
    env_host: %w[MYSQL_HOST MYSQL_ADDRESS],
    env_port: %w[MYSQL_PORT MYSQL_TCP_PORT],
    env_user: %w[MYSQL_USER MYSQL_USERNAME],
    env_password: %w[MYSQL_PASSWORD MYSQL_PWD]
  }
end

.normalize_hash(h) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 173

def normalize_hash(h)
  h.is_a?(Hash) ? h.transform_keys(&:to_s) : {}
end

.present?(s) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/polyrun/database/url_builder/connection.rb', line 185

def present?(s)
  !s.nil? && !s.to_s.empty?
end

.resolve_connection(databases_hash) ⇒ Object 



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# File 'lib/polyrun/database/url_builder/connection.rb', line 11

def resolve_connection(databases_hash)
  dh = normalize_hash(databases_hash)
  profile = connection_profile(dh)
  blk = merged_connection_block(dh, profile)
  scheme = profile[:scheme]
  host = (blk["host"] || env_first(profile[:env_host]) || profile[:default_host]).to_s
  port = (blk["port"] || env_first(profile[:env_port]) || profile[:default_port]).to_s
  user = (blk["username"] || blk["user"] || env_first(profile[:env_user]) || profile[:default_user]).to_s
  password = blk["password"] || env_first(profile[:env_password])

  {
    scheme: scheme,
    host: host,
    port: port,
    user: user,
    password: password
  }
end