Sha256: 4e816dc698c1612621a23bdc931d5eb24133b41baeb84d752b3d230b561dd044
Contents?: true
Size: 1.8 KB
Versions: 7
Compression:
Stored size: 1.8 KB
Contents
# encoding: utf-8
# This file is distributed under New Relic's license terms.
# See https://github.com/newrelic/rpm/blob/master/LICENSE for complete details.
require 'new_relic/agent/database/obfuscation_helpers'
module NewRelic
module Agent
module Database
module PostgresExplainObfuscator
extend self
# Note that this regex can't be shared with the ones in the
# Database::Obfuscator class because here we don't look for
# backslash-escaped strings (and those regexes are backwards).
QUOTED_STRINGS_REGEX = /'(?:[^']|'')*'|"(?:[^"]|"")*"/
LABEL_LINE_REGEX = /^([^:\n]*:\s+).*$/.freeze
def obfuscate(explain)
# First, we replace all single-quoted strings.
# This is necessary in order to deal with multi-line string constants
# embedded in the explain output.
#
# Note that we look for both single or double quotes but do not
# replace double quotes in order to avoid accidentally latching onto a
# single quote character embedded within a quoted identifier (such as
# a table name).
#
# Note also that we make no special provisions for backslash-escaped
# single quotes (\') because these are canonicalized to two single
# quotes ('') in the explain output.
explain.gsub!(QUOTED_STRINGS_REGEX) do |match|
match.start_with?('"') ? match : '?'
end
# Now, mask anything after the first colon (:).
# All parts of the query that can appear in the explain output are
# prefixed with "<label>: ", so we want to preserve the label, but
# remove the rest of the line.
explain.gsub!(LABEL_LINE_REGEX, '\1?')
explain
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems