Module: RedshiftConnector::Importer

Defined in:
lib/redshift-connector/importer.rb,
lib/redshift-connector/importer.rb

Defined Under Namespace

Classes: InsertDelta, RebuildRename, RebuildTruncate, Upsert

Class Method Summary collapse

Class Method Details

.get_rebuild_class(strategy) ⇒ Object 



108
109
110
111
112
113
114
115
 
# File 'lib/redshift-connector/importer.rb', line 108

def Importer.get_rebuild_class(strategy)
  case strategy.to_s
  when 'rename' then RebuildRename
  when 'truncate' then RebuildTruncate
  else
    raise ArgumentError, "unsupported rebuild strategy: #{strategy.inspect}"
  end
end

.transport_all_from_bundle(strategy: 'rename', bundle:, table:, columns:, logger: RedshiftConnector.logger, quiet: false) ⇒ Object 



93
94
95
96
97
98
99
100
101
102
103
104
105
106
 
# File 'lib/redshift-connector/importer.rb', line 93

def Importer.transport_all_from_bundle(
  strategy: 'rename',
  bundle:,
  table:, columns:,
  logger: RedshiftConnector.logger, quiet: false
)
  importer = get_rebuild_class(strategy).new(
    dao: table.classify.constantize,
    bundle: bundle,
    columns: columns,
    logger: logger
  )
  importer
end

.transport_all_from_s3(strategy: 'rename', bucket: nil, prefix:, format:, filter: nil, table:, columns:, logger: RedshiftConnector.logger, quiet: false) ⇒ Object 



71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/redshift-connector/importer.rb', line 71

def Importer.transport_all_from_s3(
    strategy: 'rename',
    bucket: nil, prefix:, format:, filter: nil,
    table:, columns:,
    logger: RedshiftConnector.logger, quiet: false)
  bucket = bucket ? S3Bucket.get(bucket) : S3Bucket.default
  logger = NullLogger.new if quiet
  bundle = S3DataFileBundle.for_prefix(
    bucket: bucket,
    prefix: prefix,
    format: format,
    filter: filter,
    logger: logger
  )
  transport_all_from_bundle(
    strategy: strategy,
    bundle: bundle,
    table: table, columns: columns,
    logger: logger, quiet: quiet
  )
end

.transport_delta_from_bundle(bundle:, table:, columns:, delete_cond: nil, upsert_columns: nil, logger: RedshiftConnector.logger, quiet: false) ⇒ Object 



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
 
# File 'lib/redshift-connector/importer.rb', line 39

def Importer.transport_delta_from_bundle(
  bundle:,
  table:, columns:,
  delete_cond: nil, upsert_columns: nil,
  logger: RedshiftConnector.logger, quiet: false
)
  if delete_cond and upsert_columns
    raise ArgumentError, "delete_cond and upsert_columns are exclusive"
  end
  importer =
    if delete_cond
      Importer::InsertDelta.new(
        dao: table.classify.constantize,
        bundle: bundle,
        columns: columns,
        delete_cond: delete_cond,
        logger: logger
      )
    elsif upsert_columns
      Importer::Upsert.new(
        dao: table.classify.constantize,
        bundle: bundle,
        columns: columns,
        upsert_columns: upsert_columns,
        logger: logger
      )
    else
      raise ArgumentError, "either of delete_cond or upsert_columns is required for transport_delta"
    end
  importer
end

.transport_delta_from_s3(bucket: nil, prefix:, format:, filter: nil, table:, columns:, delete_cond: nil, upsert_columns: nil, logger: RedshiftConnector.logger, quiet: false) ⇒ Object 



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/redshift-connector/importer.rb', line 17

def Importer.transport_delta_from_s3(
    bucket: nil, prefix:, format:, filter: nil,
    table:, columns:,
    delete_cond: nil, upsert_columns: nil,
    logger: RedshiftConnector.logger, quiet: false)
  bucket = bucket ? S3Bucket.get(bucket) : S3Bucket.default
  logger = NullLogger.new if quiet
  bundle = S3DataFileBundle.for_prefix(
    bucket: bucket,
    prefix: prefix,
    format: format,
    filter: filter,
    logger: logger
  )
  transport_delta_from_bundle(
    bundle: bundle,
    table: table, columns: columns,
    delete_cond: delete_cond, upsert_columns: upsert_columns,
    logger: logger, quiet: quiet
  )
end