Module: PostHog::Utils

Included in:
Client, FeatureFlagsPoller, FieldParser, SendWorker, Transport
Defined in:
lib/posthog/utils.rb

Defined Under Namespace

Classes: SizeLimitedHash

Constant Summary collapse

UTC_OFFSET_WITH_COLON = 
'%s%02d:%02d'
UTC_OFFSET_WITHOUT_COLON = 
UTC_OFFSET_WITH_COLON.sub(':', '')

Class Method Summary collapse

Class Method Details

.convert_to_datetime(value) ⇒ Object 



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# File 'lib/posthog/utils.rb', line 89

def convert_to_datetime(value)
  if value.respond_to?(:strftime)
    value

  elsif value.respond_to?(:to_str)
    begin
      DateTime.parse(value)
    rescue ArgumentError
      raise InconclusiveMatchError, "#{value} is not in a valid date format"
    end
  else
    raise InconclusiveMatchError, 'The date provided must be a string or date object'
  end
end

.date_in_iso8601(date) ⇒ Object 



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# File 'lib/posthog/utils.rb', line 75

def date_in_iso8601(date)
  date.strftime('%F')
end

.datetime_in_iso8601(datetime) ⇒ Object 



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# File 'lib/posthog/utils.rb', line 55

def datetime_in_iso8601(datetime)
  case datetime
  when Time
    time_in_iso8601 datetime
  when DateTime
    time_in_iso8601 datetime.to_time
  when Date
    date_in_iso8601 datetime
  else
    datetime
  end
end

.formatted_offset(time, colon = true, alternate_utc_string = nil) ⇒ Object 



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# File 'lib/posthog/utils.rb', line 79

def formatted_offset(time, colon = true, alternate_utc_string = nil)
  (time.utc? && alternate_utc_string) ||
    seconds_to_utc_offset(time.utc_offset, colon)
end

.get_by_symbol_or_string_key(hash, key) ⇒ Object

public: Get value from hash by symbol key first, then string key

Handles falsy values correctly (unlike ||)

hash - Hash to lookup value in key - Symbol or String key to lookup

Returns the value if found, nil otherwise



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# File 'lib/posthog/utils.rb', line 122

def get_by_symbol_or_string_key(hash, key)
  symbol_key = key.to_sym
  string_key = key.to_s

  if hash.key?(symbol_key)
    hash[symbol_key]
  else
    hash[string_key]
  end
end

.is_valid_regex(regex) ⇒ Object

TODO: Rename to ‘valid_regex?` in future version



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# File 'lib/posthog/utils.rb', line 108

def is_valid_regex(regex) # rubocop:disable Naming/PredicateName
  Regexp.new(regex)
  true
rescue RegexpError
  false
end

.isoify_dates(hash) ⇒ Object

public: Returns a new hash with all the date values in the into iso8601

strings



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# File 'lib/posthog/utils.rb', line 33

def isoify_dates(hash)
  hash.transform_values do |v|
    datetime_in_iso8601(v)
  end
end

.isoify_dates!(hash) ⇒ Object

public: Converts all the date values in the into iso8601 strings in place



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# File 'lib/posthog/utils.rb', line 41

def isoify_dates!(hash)
  hash.replace isoify_dates hash
end

.seconds_to_utc_offset(seconds, colon = true) ⇒ Object 



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# File 'lib/posthog/utils.rb', line 84

def seconds_to_utc_offset(seconds, colon = true)
  format((colon ? UTC_OFFSET_WITH_COLON : UTC_OFFSET_WITHOUT_COLON), (seconds.negative? ? '-' : '+'),
         seconds.abs / 3600, (seconds.abs % 3600) / 60)
end

.stringify_keys(hash) ⇒ Object

public: Return a new hash with keys as strings



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# File 'lib/posthog/utils.rb', line 26

def stringify_keys(hash)
  hash.transform_keys(&:to_s)
end

.symbolize_keys(hash) ⇒ Object

public: Return a new hash with keys converted from strings to symbols



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# File 'lib/posthog/utils.rb', line 14

def symbolize_keys(hash)
  hash.transform_keys(&:to_sym)
end

.symbolize_keys!(hash) ⇒ Object

public: Convert hash keys from strings to symbols in place



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# File 'lib/posthog/utils.rb', line 20

def symbolize_keys!(hash)
  hash.replace symbolize_keys hash
end

.time_in_iso8601(time, fraction_digits = 3) ⇒ Object 



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# File 'lib/posthog/utils.rb', line 68

def time_in_iso8601(time, fraction_digits = 3)
  fraction =
    (('.%06i' % time.usec)[0, fraction_digits + 1] if fraction_digits.positive?) # rubocop:disable Style/FormatString

  "#{time.strftime('%Y-%m-%dT%H:%M:%S')}#{fraction}#{formatted_offset(time, true, 'Z')}"
end

.uid ⇒ Object

public: Returns a uid string



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# File 'lib/posthog/utils.rb', line 47

def uid
  arr = SecureRandom.random_bytes(16).unpack('NnnnnN')
  arr[2] = (arr[2] & 0x0fff) | 0x4000
  arr[3] = (arr[3] & 0x3fff) | 0x8000

  '%08x-%04x-%04x-%04x-%04x%08x' % arr # rubocop:disable Style/FormatStringToken, Style/FormatString
end