1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
require 'uri'
module ActiveRecord
module ConnectionAdapters
class ConnectionSpecification #:nodoc:
attr_reader :config, :adapter_method
def initialize(config, adapter_method)
@config, @adapter_method = config, adapter_method
end
def initialize_dup(original)
@config = original.config.dup
end
##
# Builds a ConnectionSpecification from user input
class Resolver # :nodoc:
attr_reader :configurations
def initialize(configurations)
@configurations = configurations
end
def resolve(config)
if config
resolve_connection config
elsif defined?(Rails.env)
resolve_env_connection Rails.env.to_sym
else
raise AdapterNotSpecified
end
end
def spec(config)
spec = resolve(config).symbolize_keys
raise(AdapterNotSpecified, "database configuration does not specify adapter") unless spec.key?(:adapter)
path_to_adapter = "active_record/connection_adapters/#{spec[:adapter]}_adapter"
begin
require path_to_adapter
rescue Gem::LoadError => e
raise Gem::LoadError, "Specified '#{spec[:adapter]}' for database adapter, but the gem is not loaded. Add `gem '#{e.name}'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord)."
rescue LoadError => e
raise LoadError, "Could not load '#{path_to_adapter}'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile.", e.backtrace
end
adapter_method = "#{spec[:adapter]}_connection"
ConnectionSpecification.new(spec, adapter_method)
end
private
def resolve_connection(spec) #:nodoc:
case spec
when Symbol, String
resolve_env_connection spec
when Hash
resolve_hash_connection spec
end
end
def resolve_env_connection(spec) # :nodoc:
# Rails has historically accepted a string to mean either
# an environment key or a url spec, so we have deprecated
# this ambiguous behaviour and in the future this function
# can be removed in favor of resolve_string_connection and
# resolve_symbol_connection.
if config = configurations[spec.to_s]
if spec.is_a?(String)
ActiveSupport::Deprecation.warn "Passing a string to ActiveRecord::Base.establish_connection " \
"for a configuration lookup is deprecated, please pass a symbol (#{spec.to_sym.inspect}) instead"
end
resolve_connection(config)
elsif spec.is_a?(String)
resolve_string_connection(spec)
else
raise(AdapterNotSpecified, "#{spec} database is not configured")
end
end
def resolve_hash_connection(spec) # :nodoc:
spec
end
def resolve_string_connection(spec) # :nodoc:
config = URI.parse spec
adapter = config.scheme
adapter = "postgresql" if adapter == "postgres"
database = if adapter == 'sqlite3'
if '/:memory:' == config.path
':memory:'
else
config.path
end
else
config.path.sub(%r{^/},"")
end
spec = { "adapter" => adapter,
"username" => config.user,
"password" => config.password,
"port" => config.port,
"database" => database,
"host" => config.host }
spec.reject!{ |_,value| value.blank? }
uri_parser = URI::Parser.new
spec.map { |key,value| spec[key] = uri_parser.unescape(value) if value.is_a?(String) }
if config.query
options = Hash[config.query.split("&").map{ |pair| pair.split("=") }]
spec.merge!(options)
end
spec
end
end
end
end
end
|
