HIGOBASHI.AWS 第5回 「初めてサーバーレス開発をやってみた振り返り」

2018/7/27に開催されたHIGOBASHI.AWS 第5回の発表資料です。

サーバーレス開発未経験者が入社〜2ヶ月間のサーバーレス開発を振り返り、
・ハマった点
・もっとこうすれば良かったという反省点
・うまくいった点
についてお話ししました。

Transcript

1. ؠాɹஐ࠸ ॳΊͯαʔόʔϨε։ൃΛ΍ͬͯΈͨৼΓฦΓ
2. εϥΠυ͸ޙͰೖख͢Δ͜ͱ͕ग़དྷ·͢ͷͰ ൃදதͷ಺༰ΛϝϞ͢Δඞཁ͸͋Γ·ͤΜɻ ࣸਅࡱӨΛ͢Δ৔߹͸ ϑϥογϡɾγϟολʔԻ͕ग़ͳ͍Α͏ʹ͝഑ྀ͍ͩ͘͞ Attention
3. ࣗݾ঺հ
    ؠాɹஐ࠸ w αʔόʔϨε։ൃ෦
   w ೥݄ೖࣾ
   w Ϋϥϝιೖࣾ·Ͱ͸4JFSͰ೥ۈ຿
   w ӡ༻೥ डୗγεςϜܥӡ༻
   w ։ൃ೥ /&5
   1)1
   w "84ྺɺαʔόʔϨεྺ໿ϲ݄
4. ࠓ೔͓࿩͢͠Δ͜ͱ
    w ॳΊͯͷαʔόʔϨε։ൃͰࢼߦࡨޡͯ͠Έͨ൓ল఺
   w ϋϚͬͨͱ͜Ζɺ͏·͍ͬͨ͘ͱ͜Ζ౳ͷ5*14
   w 1ZUIPOͷ࣮૷ͷ࿩
5. ࠓ೔͓࿩͠͠ͳ͍͜ͱ
    w ىঝస݁ͷ͋Δ·ͱ·ͬͨ࿩
   w "84΍αʔόʔϨεͷجૅ஌ࣝ
   w ͜͏͍͏࣌͸͜͏ʂɹΈ͍ͨͳϕετϓϥΫςΟε࿦
   w 1ZUIPOҎ֎ͷݴޠͷ࿩
6. 
    ೖࣾʙ্݄०·Ͱैࣄͨ͠
   ։ൃҊ݅Λ୊ࡐʹ
   খωλΛ঺հ͍͖ͯ͠·͢
7. 
    ϓϩδΣΫτͷ֓ཁ
8. ϓϩδΣΫτͷ֓ཁ
    w"1*
   (BUFXBZͱ-BNCEBΛ࢖༻ͨ͠3FTU"1*ͷ։ൃ͕ओͳλεΫ
   w։ൃͨ͠"1*͸ผϕϯμʔ͕ϞόΠϧΞϓϦ౳͔Βར༻
   w݄͔Β1+࢝ಈɹ্݄०ʹຊ൪Քಇ։࢝ ˞ߏ੒͸؆ུԽͯ͠هࡌ͍ͯ͠·͢
9. ࢖༻ٕͨ͠ज़
    ΞϓϦέʔγϣϯϑϨʔϜ ϫʔΫ ಛʹͳ͠ ςετ༻ϥΠϒϥϦ 6OJU5FTUɺ.PUP ։ൃݴޠ 1ZUIPO
    ߏ੒؅ཧ "84
   4". ιʔε؅ཧ (JU-BC $*$% (JU-BC
   $*$%
10. ϓϩδΣΫτͷମ੍
     w ૬ํɹ"͞Μ
    w ೥݄ೖࣾɾɾɾೖࣾ̍ϲ݄
    w 1ZUIPOܦݧແ͠
    w ࢲ
    w ೥݄ೖࣾɾɾɾೖࣾϲ݄
    w 1ZUIPOܦݧແ͠ Ҏ্ʂʂ
11. ײ૝
     (lllʉ˘ʉ)
12. 
     ͜Μͳײ͡Ͱ։ൃ͕ελʔτ͠·ͨ͠
13. 
     ͔͜͜ΒϓϩδΣΫτΛৼΓฦΓͳ͕Β
    ࢼߦࡨޡͨ͜͠ͱΛ͝঺հ͍͖ͯ͠·͢ɻ
14. ৼΓฦΓ
     ᶃAPIઃܭฤ
15. "1*ઃܭฤ
     w "1*ͷઃܭʹ͸4XBHHFSΛར༻
    w "1*ʹؔ࿈͢Δ"84ͷॾʑͷϦ ιʔεΛఆٛͭͭ͠΋ɺఆٛϑΝ ΠϧΛͦͷ··υΩϡϝϯτͱ ͯ͠ྲྀ༻Մೳ
    w 4XBHHFS6*౳ͷπʔϧͱ૊Έ߹ ΘͤΔ͜ͱͰ؆୯ʹ"1*ͷςετ ؀ڥ͕࡞੒Ͱ͖Δɻ
16. ઃܭʹ4XBHHFSΛར༻͢Δࡍͷ஫ҙ఺ᶃ
     AWSͷAPI Gateway͸Swagger2.0ʹ ׬શରԠ͍ͯ͠Δ༁Ͱ͸ແ͍
17. 4XBHHFS
    º
    "1*
    (BUFXBZ
    ඇޓ׵ͷྫ
     "1*ར༻ऀଆͱͯ͠͸خ͍͠
    ʮ&YBNQMFʯͰ͕͢ɺී௨ʹ"1*
    (BUFXBZʹΠϯϙʔτ͢ΔͱΤϥʔ ʹͳΓ·͢ɻ
    4".ςϯϓϨʔτ΋ಉ༷Ͱɺී௨ ʹςϯϓϨʔτʹ&YBNQMFΛॻ͍ ͯ"1*ΛσϓϩΠ͢ΔͱɺσϓϩΠ ʹࣦഊ͠·͢ɻ
18. ղܾࡦ
     (JU-BC
    3VOOFS্ͰϏϧυͷδϣϒΛ࣮ߦ͢Δࡍɺ&YBNQMFΛ࡟আͯ͠ ͔ΒσϓϩΠΛ࣮ߦ
    "1*ఆٛΛެ։͢Δࡍ͸&YBNMF࡟আલͷఆٛϑΝΠϧΛ࢖༻
19. ઃܭʹ4XBHHFSΛར༻͢Δࡍͷ஫ҙ఺ᶄ
     SAMͰAPI GatewayͷઃఆΛߦ͏৔߹ɺ SwaggerΛ࢖͍ͬͯΔ͔Ͳ͏͔Ͱ هड़͕มΘΔ͜ͱ͕͋Δɻ
20. ྫ
     ྫ͑͹ɺ"1*
    (BUFXBZͷϨεϙϯεςϯϓϨʔτΛઃఆ͢Δ৔߹
21. 4XBHHFSΛ࢖͏৔߹ͱ࢖Θͳ͍৔߹Ͱॻ͖ํ͕ҧ͏ʂ
     ɾɾɾུ x-amazon-apigateway-gateway-responses: DEFAULT_4XX: responseTemplates: application/json: > {"message":"$context.authorizer.message"} GatewayResponse: Type: "AWS::ApiGateway::GatewayResponse" Properties: ResponseTemplates: application/json: > {"message":"$context.authorizer.message"} ResponseType: DEFAULT_4XX RestApiId: !Ref HelloAPI "84"QJ(BUFXBZ(BUFXBZ3FTQPOTF
    ͷϓϩύςΟ3FTQPOTF5FNQMBUFTͰఆٛ YBNB[POBQJHBUFXBZHBUFXBZSFTQPOTFT
    Ͱఆٛ
    "84"QJ(BUFXBZ(BUFXBZ3FTQPOTFͰఆٛ͠ ͯ΋ແࢹ͞ΕΔ 4XBHHFSΛ࢖Θͳ͍৔߹ 4XBHHFSΛ࢖͏৔߹
22. ֶΜͩ͜ͱ
     ઃఆํ๏ʹ͍ͭͯωοτͰௐ΂ͨΓɺ υΩϡϝϯτΛಡΜͩΓ͢Δ৔߹͸ SwaggerΛ࢖͏৔߹ɾ࢖Θͳ͍৔߹Ͱ هड़͕มΘΔ͜ͱΛ೦಄ʹஔ͖ͳ͕Β ௐࠪ͢Δ
23. ৼΓฦΓ
     ᶄPython࣮૷ฤ
24. ৼΓฦΓ
     ᶄʔᶃDynamoDB΁ͷΞΫηε
25. CPUPʹର͢ΔΠϝʔδ
     ͍͍ͪͪςʔϒϧ໊Λࢦఆͨ͠Γ
    ΩʔͷଐੑΛࢦఆ͢Δͷ͕൥ࡶ
    ઈରλΠϙ͢Δࣗ৴͕͋ͬͨ import boto3 dynamodb = boto3.resource('dynamodb') table = dynamodb.Table('test') res = table.get_item(Key={ "hash_key": "1", "range_key": "ABC" }) ͍͍ײ͡ʹΫϥεઃܭͯ͠%ZOBNP%#΁ͷΞΫηεΛ؆ૉԽ͍ͨ͠ αʔόʔϨεΞϓϦͷσʔλετΞͱ͍͑͹%ZOBNP%#Ͱ͕͢ɾɾɾ
26. ΍ͬͨ͜ͱ
     ֤ςʔϒϧڞ௨ͷॲཧΛ࣮૷ͨ͠ந৅ ΫϥεΛ࡞੒͠ɺςʔϒϧຖʹ۩৅Ϋ ϥεΛ࡞੒
    ςʔϒϧ໊΍Ωʔͷ৘ใ͸Ϋϥεͷ ϑΟʔϧυʹอ࣋͢ΔΑ͏ʹઃܭ
    ίϨͰݺͼग़͠ݩ͸ςʔϒϧࢦఆ΍Ωʔ ࢦఆͱ͍ͬͨ໘౗͝ͱ͔Βղ์͞ΕΔ ͸ͣʂʂ
27. ΍ͬͨ͜ͱ
     جఈΫϥε ۩৅Ϋϥε from abc import ABC, ABCMeta, abstractmethod from boto3.dynamodb.conditions import Key class TableBase(ABC): """ DynaoDBͷςʔϒϧૢ࡞ͷͨΊͷந৅Ϋϥε """ def __init__(self, dynamo): """ :param dynamo: """ self.__dynamo = dynamo @property def dynamo(self): return self.__dynamo @property @abstractmethod def table(self): pass @property @abstractmethod def table_name(self): pass @property @abstractmethod def hash_key(self): pass class MDeviceResourceState(TableBase): def __init__(self, dynamo): """ :param dynamo: """ super().__init__(dynamo) self.__table_name = os.getenv('M_DEVICE_RESOURCE_STATE') self.__hash_key = 'device_mng_id' self.__range_key = None self.__table = self.dynamo.Table(self.__table_name) @property def table_name(self)->str: return self.__table_name @property def table(self)->str: return self.__table @property def hash_key(self)->str: return self.__hash_key @property def range_key(self)->str: return self.__range_key def get_item_by_device_id(self, device_id): return self.__table.query( IndexName='GSI_device_id',
28. ΍ͬͨ͜ͱ
     kinesis_data = base64.b64decode(record['kinesis']['data']) kinesis_data = json.loads(kinesis_data, parse_float=Decimal) raw_data = kinesis_data['payloads'] # DynamoDB͔Βߋ৽લͷϨίʔυऔಘ device_id = kinesis_data['deviceId'] table = MDeviceResourceState(dynamo) before_item = table.get_item_by_device_id(device_id) ! ݺͼग़͠ଆͷ࣮૷͸ൺֱతγϯϓϧʹ
    ! λΠϙ͠ͳ͘ͳͬͨ
29. ྑ͔ͬͨ఺
     DynamoDB΁ΞΫηε͢ΔϩδοΫΛ શͯLambdaͷhandlerʹ٧ΊࠐΉͱ ݟ௨͕͠ѱ͘ͳͬͯਏ͍ ςʔϒϧຖʹઐ༻ΫϥεΛ༻ҙ͢Δͷ΋༗ޮ
30. ൓ল఺
     ςʔϒϧຖʹΫϥεΛ༻ҙ͢Δͱɺ ෳ਺ςʔϒϧΛލ͍ͩ Batch Get౳Λ͏·͘ϝιουʹ མͱ͠ࠐΊͳ͔ͬͨ
31. ৼΓฦΓ
     ᶄʔᶄAPIͷϩδοΫڞ௨Խ
32. ॲཧͷڞ௨Խʹؔ͢Δ೰Έɾɾɾ
     "1*ΛԿຊ΋࡞͍ͬͯΔͱɺେମॲཧ͕ࣅ௨ͬͯ͘Δ def lambda_handler(event, context): try: # ϦΫΤετύϥϝʔλΛ୯߲໨νΣοΫͯ͠NGͳΒ400Τϥʔฦ͢ # ୯߲໨νΣοΫ͕OKͳΒؔ࿈νΣοΫͯ͠NGͳΒ400Τϥʔฦ͢ # ϝΠϯͷϏδωεϩδοΫ # OKͳΒϨεϙϯεΛฦ͢ɹྫ֎͕ൃੜͨ͠Β500ΤϥʔΛฦͨ͠Γ except Exception as e: logger.error(e) raise e ͏·͘ڞ௨Խ͍ͨ͠ɾɾɾ
33. ΍ͬͨ͜ͱ
     def valid_json_check(func): """ ϦΫΤετBODYʹଥ౰ͳJSON͕ૹΒΕ͖͍ͯͯΔ͔ΛνΣοΫ͢ΔσίϨʔλ JSON͕ૹΒΕ͖͍ͯͳ͍৔߹͸BadRequestΛฦ͢ :param func: :return: """ def json_check_wrapper(*args, **kwargs): body = args[0]["body"] if not is_valid_json(body): res_dict = add_system_time(({ "message": "request body not contain valid json" })) return HttpResponseUtil.bad_request(json.dumps(res_dict)) return func(*args, **kwargs) return json_check_wrapper @valid_json_check def lambda_handler(event, context): try: data = json.loads(event["body"]) v = Validator(__schema()) if v.validate(data) is not True: return HttpResponseUtil.bad_request(json.dumps(v.errors, cls=DecimalEncoder)) ϦΫΤετ#0%:ʹଥ౰ͳ +40/ؚ͕·Ε͍ͯͳ͚Ε͹ ΤϥʔΛฦ͢
    ͱ͍ͬͨڞ௨ॲཧΛσίϨʔλ ͱ࣮ͯ͠૷ σίϨʔλͰڞ௨ॲཧΛ෇͚଍ ͍ͯ͘͜͠ͱͰɺ֤-BNEBͷ த਎͸ۃྗγϯϓϧʹ
34. ྑ͔ͬͨ఺
     ϦΫΤετͷόϦσʔγϣϯ΍ ྫ֎ͷϋϯυϦϯά౳ͷܾ·Γ͖ͬͨॲཧ͸ σίϨʔλΛ࢖ͬͯڞ௨Խ͢Δͷ΋༗ޮ
35. ൓ল఺
     σίϨʔλ͕࠷ద͔ͱݴΘΕΔͱٙ໰΋ APIͷछྨ(GET,POST,PUT,DELETE) ͝ͱʹجఈΫϥεΛ༻ҙͯ͠ɺ ֤APIͰ͸جఈΫϥεΛܧঝ͢ΔΑ͏ͳ ख๏΋ࠓޙࢼͯ͠Έ͍ͨ
36. ൓ল఺
     ͦ΋ͦ΋ϑϨʔϜϫʔΫΛ࢖͏ͱ͍͏ બ୒ࢶ͸ແ͔ͬͨͷ͔ʁ Chalice΍Flask౳
37. ৼΓฦΓ
     ᶅςετฤ
38. 6OJUςετʹ͓͚Δ%ZOBNP%#ͷςʔϒϧఆٛ؅ཧ
     6OJUςετ͸NPUPͰ
    %ZOBNP%#ΛϞοΫ
    6OJUςετͷ'JYUVSF಺Ͱ
    ςʔϒϧΛ࡞੒͢Δඞཁ͕͋Δ
39. ίϨ͸ݏɾɾɾ
     @mock_dynamodb2 def test_get_api(self): dynamodb = boto3.resource('dynamodb') dynamodb.create_table( TableName='Movies', KeySchema=[ { 'AttributeName': 'year', 'KeyType': 'HASH' }, { 'AttributeName': 'title', 'KeyType': 'RANGE' } ], AttributeDefinitions=[ { 'AttributeName': 'year', 'AttributeType': 'N' }, { 'AttributeName': 'title', 'AttributeType': 'S' }, ], ProvisionedThroughput={ 'ReadCapacityUnits': 10, 'WriteCapacityUnits': 10 } ) ςʔϒϧఆٛ͸4".ςϯϓϨʔ τͰ؅ཧ͍ͯ͠Δͷʹɺςετίʔ υʹ͍͍ͪͪςʔϒϧఆٛΛॻ͖ ͨ͘ͳ͍
40. 
     SAMςϯϓϨʔτΛύʔεͯ͠ɺ ύʔεͨ͠ఆ͔ٛΒςετ༻ͷ DynamoDBͷςʔϒϧΛ࡞Γ͍ͨ
41. %ZOBNP%#ͷఆٛΛύʔεͨ͠ࡍͷΤϥʔᶃ
     yaml.constructor.ConstructorError: could not determine a constructor for the tag ‘!Sub’ in "dynamo.yml", line 16, column 18
42. %ZOBNP%#ͷఆٛΛύʔεͨ͠ࡍͷΤϥʔᶄ
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43. "84
    $-*ͷؔ਺Λ࢖༻ͯ͠%ZOBNP%#ͷఆٛΛύʔε
     w 4VC΍3FGͷΑ͏ͳ୹ॖه๏͸:".-ͱͯ͠͸ύʔεग़དྷͳ͍
    w "84
    $-*಺ͷؔ਺Λ࢖͏͜ͱͰύʔεग़དྷΔ
    w ˞಺෦తʹ͸'O4VC΍'O3FGʹల։͞Ε͍ͯΔ
    IUUQTEFWDMBTTNFUIPEKQTFSWFSTJEFTFSWFSMFTTEZOBNPMPDBMGSPNDGO from awscli.customizations.cloudformation.yamlhelper import yaml_parse def main(): with open("dynamo.yml") as file: data = yaml_parse(file.read()) # ςετ༻ͷςʔϒϧΛ࡞੒͢Δॲཧ # .... if __name__ == '__main__': main()
44. ࠷ऴܥ
     w 'JYUVSFͷςʔϒϧ࡞੒ָ͕νϯʹ
    w ςʔϒϧఆٛͷ؅ཧΛҰݩԽ͢Δ͜ͱʹ੒ޭ region = os.getenv('AWS_DEFAULT_REGION', 'ap-northeast-1') self.dynamodb = boto3.resource('dynamodb', region_name=region) table_fixture = CreateTableFixture(self.dynamodb) table_fixture.create_m_device_resources_state()
45. ৼΓฦΓ
     ᶆෆ۩߹ରԠฤ
46. ৼΓฦΓ
     ᶆʔᶃDynamoDBۭจࣈྻ໰୊
47. ෆ۩߹ରԠᶃ
     ͓٬༷͔Βͷ໰͍߹Θͤ
    ఆظతʹ࣮ߦͯ͠Δॲཧ͕ίέͯΔͬΆ͍
    $MPVE
    8BUDI
    -PHTΛ
    ֬ೝ͢Δͱɾɾɾ
48. Τϥʔϝοηʔδ
     botocore.exceptions.ClientError: An error occurred (ValidationException) when callin g the PutItem operation: One or more parameter values were invalid: An Attribut eValue may not contain an empty string
49. ֶΜͩ͜ͱ
     DynamoDBͷϨίʔυΛొ࿥ɾߋ৽͢Δࡍɺ ஋ʹۭจࣈྻ͸ઃఆͰ͖ͳ͍ɻ ೖྗ஋ʹۭจࣈྻ͕ೖ͍ͬͯΔ͔ΛνΣοΫ ͠ɺNoneʹม׵͢ΔͳΓɺ߲໨͝ͱ࡟আ͢Δ ͳΓ͢Δඞཁ͕͋Δɻ
50. ൓ল఺
     ೖྗ஋ΛશͯνΣοΫ͢Δͷ͸໘౗
    جఈςʔϒϧΫϥεͷ6QEBUF 1VUॲཧʹ
    ۭจࣈྻˠ/POFͷม׵ॲཧΛ
    ࣮૷͓͚ͯ͠͹ྑ͔ͬͨɾɾɾ
    
51. ࢀߟ
     Pythonͷ৔߹͸ࣗྗͰؤுΔඞཁ͕͋Γ·͢ ͕ɺNode.jsͩͱdocument clientͷίϯετ ϥΫλͰconvertEmptyValuesͱ͍͏ύϥ ϝʔλΛࢦఆ͢Δ͜ͱͰۭจࣈྻˠNULL΁ͷ ม׵Λউखʹ΍ͬͯ͘Ε·͢ɻ https://github.com/aws/aws-sdk-js/pull/1268
52. ৼΓฦΓ
     ᶆ−ᶄSNSͰΤϥʔ௨஌དྷͳ͍໰୊
53. ෆ۩߹ରԠᶄ
     ઌ΄ͲͷۭจࣈྻʹΑΔΤϥʔɾɾɾ
    ͓٬༷͔Β໰͍߹Θ͕ͤདྷΔ·Ͱ
    ؾ෇͍͍ͯ·ͤΜͰͨ͠ɻ
54. 
     σουϨλʔΩϡʔΛઃఆͯ͠
    4/4Ͱ௨஌͢ΔΑ͏ઃఆ͍ͯͨ͠ͷʹ
    ͳͥݕ஌Ͱ͖ͳ͔ͬͨͷ͔ʁʁ ❌ ෆ۩߹ରԠᶄ
55. ֶΜͩ͜ͱ
     %-2͕༗ޮͳͷ͸
    ετϦʔϜϕʔεͰ͸ͳ͍Πϕϯτιʔεͷ
    ඇಉظݺͼग़͠ͷ৔߹
    %ZOBNP%#ετϦʔϜ΍
    ,JOFTJT
    %BUB
    4USFBNT͔Βىಈ͢Δ -BNCEBͰ͸%-2͸ແҙຯ
56. ॲཧ଴ͪϨίʔυ ͕଺ཹ ֶΜͩ͜ͱ
     ͞Βʹɾɾɾ ετϦʔϜϕʔεͷΠϕϯτιʔε͔Βىಈ͢ΔLambda͕ ίέͨ৔߹ɺࣦഊͨ͠Ϩίʔυͷ༗ޮظݶ͕੾ΕΔ͔ॲཧ ͕੒ޭ͢Δ·Ͱɺ৽͍͠ϨίʔυͷಡΈࠐΈ͕ߦΘΕͳ͍ https://docs.aws.amazon.com/ja_jp/lambda/latest/dg/retries-on-errors.html %ZOBNP%#ετϦʔϜ ❌
57. ֶΜͩ͜ͱ
     ετϦʔϜϕʔεͷΠϕϯτιʔε͔Β ىಈ͢ΔLambda͕ίέΔͱ ΠϯύΫτେʂʂ ಛʹೖ೦ͳςετΛʂ
58. ·ͱΊ
     w "1*
    (BUFXBZͱ4XBHHFSͷඇޓ׵͸$*$%Ͱٵऩ͢Δ
    w "1*Λઃܭ͢Δࡍ͸ɺ4XBHHFSͷར༻༗ແͰॻ͖ํ͕มΘΔ͜ͱΛ೦಄ʹ
    w %ZOBNP%#΁ͷΞΫηε͸CPUP୯ମͰ͸ͳ͘ɺؒʹΫϥεΛט·͢ͱ ָʹͳΓͦ͏ʁ
    w "1*ͷϩδοΫڞ௨ԽʹσίϨʔλ͕ޮՌత͔΋ʁ
    w %ZOBNP%#ͷςʔϒϧఆٛ͸ຊ൪༻΋ςετ༻΋Ұݩ؅ཧ͢Δ
    w %ZOBNP%#ʹ͸ۭจࣈྻొ࿥Ͱ͖ͳ͍ͷͰؾΛ͚ͭΔ
    w ετϦʔϜϕʔεͷΠϕϯτ͔Βىಈ͢Δ-BNCEB͸ೖ೦ͳςετΛ
59. ·ͱΊ
     ࠓճ͝঺հͨ͠TIPSΛࢀߟʹɺ ΑΓྑ͍αʔόʔϨεϥΠϑΛʂʂ
60. ·ͱΊ
     ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠