github.com/mweagle/Sparta@v1.15.0/docs/reference/hybrid_topologies/index.html (about) 1 <!DOCTYPE html> 2 <html lang="en" class="js csstransforms3d"> 3 <head> 4 <meta charset="utf-8"> 5 <meta name="viewport" content="width=device-width, initial-scale=1.0"> 6 <meta name="generator" content="Hugo 0.69.2" /> 7 <meta name="description" content="Sparta - AWS Lambda Microservices"> 8 <meta name="author" content="Matt Weagle"> 9 10 <link rel="icon" href="/images/favicon.png" type="image/png"> 11 12 <title>Hybrid Topologies :: Sparta - AWS Lambda Microservices</title> 13 14 15 <link href="/css/nucleus.css?1588464711" rel="stylesheet"> 16 <link href="/css/fontawesome-all.min.css?1588464711" rel="stylesheet"> 17 <link href="/css/hybrid.css?1588464711" rel="stylesheet"> 18 <link href="/css/featherlight.min.css?1588464711" rel="stylesheet"> 19 <link href="/css/perfect-scrollbar.min.css?1588464711" rel="stylesheet"> 20 <link href="/css/auto-complete.css?1588464711" rel="stylesheet"> 21 <link href="/css/theme.css?1588464711" rel="stylesheet"> 22 <link href="/css/hugo-theme.css?1588464711" rel="stylesheet"> 23 24 <link href="/css/theme-sparta.css?1588464711" rel="stylesheet"> 25 26 27 <script src="/js/jquery-3.3.1.min.js?1588464711"></script> 28 29 <link href="/css/vs.css?1588464711" rel="stylesheet"> 30 <script src="/js/highlight.pack.js?1588464711"></script> 31 <script>hljs.initHighlightingOnLoad();</script> 32 33 34 <style> 35 :root #header + #content > #left > #rlblock_left{ 36 display:none !important; 37 } 38 39 </style> 40 41 <style type="text/css"> 42 pre { 43 padding: 2px; 44 } 45 </style> 46 47 48 </head> 49 <body class="" data-url="/reference/hybrid_topologies/"> 50 <nav id="sidebar" class=""> 51 52 53 54 <div id="header-wrapper"> 55 <div id="header"> 56 <a href="/"><img src="/images/SpartaLogoNoDomain.png" height="50%" width="50%"/></a> 57 </div> 58 59 <div class="searchbox"> 60 <label for="search-by"><i class="fas fa-search"></i></label> 61 <input data-search-input id="search-by" type="search" placeholder="Search..."> 62 <span data-search-clear=""><i class="fas fa-times"></i></span> 63 </div> 64 65 <script type="text/javascript" src="/js/lunr.min.js?1588464711"></script> 66 <script type="text/javascript" src="/js/auto-complete.js?1588464711"></script> 67 <script type="text/javascript"> 68 69 var baseurl = "\/"; 70 71 </script> 72 <script type="text/javascript" src="/js/search.js?1588464711"></script> 73 74 75 </div> 76 77 <div class="highlightable"> 78 <ul class="topics"> 79 80 81 82 83 84 85 86 87 88 <li data-nav-id="/getting_started/" title="Getting Started" class="dd-item 89 90 91 92 "> 93 <a href="/getting_started/"> 94 Getting Started 95 96 </a> 97 98 99 </li> 100 101 102 103 104 105 106 107 108 109 110 <li data-nav-id="/example_service/" title="Example Service" class="dd-item 111 112 113 114 "> 115 <a href="/example_service/"> 116 Example Service 117 118 </a> 119 120 121 <ul> 122 123 124 125 126 127 128 129 130 131 132 133 134 135 <li data-nav-id="/example_service/step1/" title="Overview" class="dd-item "> 136 <a href="/example_service/step1/"> 137 Overview 138 139 </a> 140 </li> 141 142 143 144 145 146 147 148 149 150 151 152 153 154 <li data-nav-id="/example_service/step2/" title="Details" class="dd-item "> 155 <a href="/example_service/step2/"> 156 Details 157 158 </a> 159 </li> 160 161 162 163 164 165 166 167 </ul> 168 169 </li> 170 171 172 173 174 175 176 177 178 179 180 <li data-nav-id="/concepts/" title="Concepts" class="dd-item 181 182 183 184 "> 185 <a href="/concepts/"> 186 Concepts 187 188 </a> 189 190 191 </li> 192 193 194 195 196 197 198 199 200 201 202 <li data-nav-id="/reference/" title="Reference" class="dd-item 203 parent 204 205 206 "> 207 <a href="/reference/"> 208 Reference 209 210 </a> 211 212 213 <ul> 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 <li data-nav-id="/reference/apigateway/" title="" class="dd-item 230 231 232 233 "> 234 <a href="/reference/apigateway/"> 235 <b>API Gateway</b> 236 237 </a> 238 239 240 <ul> 241 242 243 244 245 246 247 248 249 250 251 252 253 254 <li data-nav-id="/reference/apigateway/echo_event/" title="Echo" class="dd-item "> 255 <a href="/reference/apigateway/echo_event/"> 256 Echo 257 258 </a> 259 </li> 260 261 262 263 264 265 266 267 268 269 270 271 272 273 <li data-nav-id="/reference/apigateway/request_params/" title="Request Parameters" class="dd-item "> 274 <a href="/reference/apigateway/request_params/"> 275 Request Parameters 276 277 </a> 278 </li> 279 280 281 282 283 284 285 286 287 288 289 290 291 292 <li data-nav-id="/reference/apigateway/context/" title="Request Context" class="dd-item "> 293 <a href="/reference/apigateway/context/"> 294 Request Context 295 296 </a> 297 </li> 298 299 300 301 302 303 304 305 306 307 308 309 310 311 <li data-nav-id="/reference/apigateway/cors/" title="CORS" class="dd-item "> 312 <a href="/reference/apigateway/cors/"> 313 CORS 314 315 </a> 316 </li> 317 318 319 320 321 322 323 324 325 326 327 328 329 330 <li data-nav-id="/reference/apigateway/slack/" title="Slack SlashCommand" class="dd-item "> 331 <a href="/reference/apigateway/slack/"> 332 Slack SlashCommand 333 334 </a> 335 </li> 336 337 338 339 340 341 342 343 344 345 346 347 348 349 <li data-nav-id="/reference/apigateway/s3site/" title="S3 Sites with CORS" class="dd-item "> 350 <a href="/reference/apigateway/s3site/"> 351 S3 Sites with CORS 352 353 </a> 354 </li> 355 356 357 358 359 360 361 362 </ul> 363 364 </li> 365 366 367 368 369 370 371 372 373 374 375 376 377 <li data-nav-id="/reference/apiv2gateway/" title="" class="dd-item 378 379 380 381 "> 382 <a href="/reference/apiv2gateway/"> 383 <b>API V2 Gateway</b> 384 385 </a> 386 387 388 </li> 389 390 391 392 393 394 395 396 397 398 399 400 401 <li data-nav-id="/reference/eventsources/" title="" class="dd-item 402 403 404 405 "> 406 <a href="/reference/eventsources/"> 407 <b>Event Sources</b> 408 409 </a> 410 411 412 <ul> 413 414 415 416 417 418 419 420 421 422 423 424 425 426 <li data-nav-id="/reference/eventsources/codecommit/" title="CodeCommit" class="dd-item "> 427 <a href="/reference/eventsources/codecommit/"> 428 CodeCommit 429 430 </a> 431 </li> 432 433 434 435 436 437 438 439 440 441 442 443 444 445 <li data-nav-id="/reference/eventsources/cloudformation/" title="CloudFormation" class="dd-item "> 446 <a href="/reference/eventsources/cloudformation/"> 447 CloudFormation 448 449 </a> 450 </li> 451 452 453 454 455 456 457 458 459 460 461 462 463 464 <li data-nav-id="/reference/eventsources/cloudwatchevents/" title="CloudWatch Events" class="dd-item "> 465 <a href="/reference/eventsources/cloudwatchevents/"> 466 CloudWatch Events 467 468 </a> 469 </li> 470 471 472 473 474 475 476 477 478 479 480 481 482 483 <li data-nav-id="/reference/eventsources/cloudwatchlogs/" title="CloudWatch Logs" class="dd-item "> 484 <a href="/reference/eventsources/cloudwatchlogs/"> 485 CloudWatch Logs 486 487 </a> 488 </li> 489 490 491 492 493 494 495 496 497 498 499 500 501 502 <li data-nav-id="/reference/eventsources/cognito/" title="Cognito" class="dd-item "> 503 <a href="/reference/eventsources/cognito/"> 504 Cognito 505 506 </a> 507 </li> 508 509 510 511 512 513 514 515 516 517 518 519 520 521 <li data-nav-id="/reference/eventsources/dynamodb/" title="DynamoDB" class="dd-item "> 522 <a href="/reference/eventsources/dynamodb/"> 523 DynamoDB 524 525 </a> 526 </li> 527 528 529 530 531 532 533 534 535 536 537 538 539 540 <li data-nav-id="/reference/eventsources/kinesis/" title="Kinesis" class="dd-item "> 541 <a href="/reference/eventsources/kinesis/"> 542 Kinesis 543 544 </a> 545 </li> 546 547 548 549 550 551 552 553 554 555 556 557 558 559 <li data-nav-id="/reference/eventsources/s3/" title="S3" class="dd-item "> 560 <a href="/reference/eventsources/s3/"> 561 S3 562 563 </a> 564 </li> 565 566 567 568 569 570 571 572 573 574 575 576 577 578 <li data-nav-id="/reference/eventsources/ses/" title="SES" class="dd-item "> 579 <a href="/reference/eventsources/ses/"> 580 SES 581 582 </a> 583 </li> 584 585 586 587 588 589 590 591 592 593 594 595 596 597 <li data-nav-id="/reference/eventsources/sns/" title="SNS" class="dd-item "> 598 <a href="/reference/eventsources/sns/"> 599 SNS 600 601 </a> 602 </li> 603 604 605 606 607 608 609 610 611 612 613 614 615 616 <li data-nav-id="/reference/eventsources/sqs/" title="SQS" class="dd-item "> 617 <a href="/reference/eventsources/sqs/"> 618 SQS 619 620 </a> 621 </li> 622 623 624 625 626 627 628 629 </ul> 630 631 </li> 632 633 634 635 636 637 638 639 640 641 642 643 644 <li data-nav-id="/reference/archetypes/" title="" class="dd-item 645 646 647 648 "> 649 <a href="/reference/archetypes/"> 650 <b>Archetype Constructors</b> 651 652 </a> 653 654 655 <ul> 656 657 658 659 660 661 662 663 664 665 666 667 668 669 <li data-nav-id="/reference/archetypes/event_bridge/" title="Event Bridge" class="dd-item "> 670 <a href="/reference/archetypes/event_bridge/"> 671 Event Bridge 672 673 </a> 674 </li> 675 676 677 678 679 680 681 682 683 684 685 686 687 688 <li data-nav-id="/reference/archetypes/codecommit/" title="CodeCommit" class="dd-item "> 689 <a href="/reference/archetypes/codecommit/"> 690 CodeCommit 691 692 </a> 693 </li> 694 695 696 697 698 699 700 701 702 703 704 705 706 707 <li data-nav-id="/reference/archetypes/cloudwatch/" title="CloudWatch" class="dd-item "> 708 <a href="/reference/archetypes/cloudwatch/"> 709 CloudWatch 710 711 </a> 712 </li> 713 714 715 716 717 718 719 720 721 722 723 724 725 726 <li data-nav-id="/reference/archetypes/dynamodb/" title="DynamoDB" class="dd-item "> 727 <a href="/reference/archetypes/dynamodb/"> 728 DynamoDB 729 730 </a> 731 </li> 732 733 734 735 736 737 738 739 740 741 742 743 744 745 <li data-nav-id="/reference/archetypes/kinesis/" title="Kinesis" class="dd-item "> 746 <a href="/reference/archetypes/kinesis/"> 747 Kinesis 748 749 </a> 750 </li> 751 752 753 754 755 756 757 758 759 760 761 762 763 764 <li data-nav-id="/reference/archetypes/kinesis_firehose/" title="Kinesis Firehose" class="dd-item "> 765 <a href="/reference/archetypes/kinesis_firehose/"> 766 Kinesis Firehose 767 768 </a> 769 </li> 770 771 772 773 774 775 776 777 778 779 780 781 782 783 <li data-nav-id="/reference/archetypes/rest/" title="REST Service" class="dd-item "> 784 <a href="/reference/archetypes/rest/"> 785 REST Service 786 787 </a> 788 </li> 789 790 791 792 793 794 795 796 797 798 799 800 801 802 <li data-nav-id="/reference/archetypes/s3/" title="S3" class="dd-item "> 803 <a href="/reference/archetypes/s3/"> 804 S3 805 806 </a> 807 </li> 808 809 810 811 812 813 814 815 816 817 818 819 820 821 <li data-nav-id="/reference/archetypes/sns/" title="SNS" class="dd-item "> 822 <a href="/reference/archetypes/sns/"> 823 SNS 824 825 </a> 826 </li> 827 828 829 830 831 832 833 834 </ul> 835 836 </li> 837 838 839 840 841 842 843 844 845 846 847 848 849 <li data-nav-id="/reference/decorators/" title="" class="dd-item 850 851 852 853 "> 854 <a href="/reference/decorators/"> 855 <b>Build-Time Decorators</b> 856 857 </a> 858 859 860 <ul> 861 862 863 864 865 866 867 868 869 870 871 872 873 874 <li data-nav-id="/reference/decorators/application_load_balancer/" title="Application Load Balancer" class="dd-item "> 875 <a href="/reference/decorators/application_load_balancer/"> 876 Application Load Balancer 877 878 </a> 879 </li> 880 881 882 883 884 885 886 887 888 889 890 891 892 893 <li data-nav-id="/reference/decorators/cloudmap/" title="CloudMap Service Discovery" class="dd-item "> 894 <a href="/reference/decorators/cloudmap/"> 895 CloudMap Service Discovery 896 897 </a> 898 </li> 899 900 901 902 903 904 905 906 907 908 909 910 911 912 <li data-nav-id="/reference/decorators/cloudfront_distribution/" title="CloudFront Distribution" class="dd-item "> 913 <a href="/reference/decorators/cloudfront_distribution/"> 914 CloudFront Distribution 915 916 </a> 917 </li> 918 919 920 921 922 923 924 925 926 927 928 929 930 931 <li data-nav-id="/reference/decorators/lambda_versioning/" title="Lambda Versioning Decorator" class="dd-item "> 932 <a href="/reference/decorators/lambda_versioning/"> 933 Lambda Versioning Decorator 934 935 </a> 936 </li> 937 938 939 940 941 942 943 944 945 946 947 948 949 950 <li data-nav-id="/reference/decorators/publish_outputs/" title="Publishing Outputs" class="dd-item "> 951 <a href="/reference/decorators/publish_outputs/"> 952 Publishing Outputs 953 954 </a> 955 </li> 956 957 958 959 960 961 962 963 964 965 966 967 968 969 <li data-nav-id="/reference/decorators/s3_artifact_publisher/" title="S3 Artifact Publisher" class="dd-item "> 970 <a href="/reference/decorators/s3_artifact_publisher/"> 971 S3 Artifact Publisher 972 973 </a> 974 </li> 975 976 977 978 979 980 981 982 983 984 985 986 987 988 <li data-nav-id="/reference/decorators/dynamic_infrastructure/" title="Dynamic Infrastructure" class="dd-item "> 989 <a href="/reference/decorators/dynamic_infrastructure/"> 990 Dynamic Infrastructure 991 992 </a> 993 </li> 994 995 996 997 998 999 1000 1001 </ul> 1002 1003 </li> 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 <li data-nav-id="/reference/interceptors/" title="" class="dd-item 1017 1018 1019 1020 "> 1021 <a href="/reference/interceptors/"> 1022 <b>Runtime Interceptors</b> 1023 1024 </a> 1025 1026 1027 <ul> 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 <li data-nav-id="/reference/interceptors/xray_interceptor/" title="XRayInterceptor" class="dd-item "> 1042 <a href="/reference/interceptors/xray_interceptor/"> 1043 XRayInterceptor 1044 1045 </a> 1046 </li> 1047 1048 1049 1050 1051 1052 1053 1054 </ul> 1055 1056 </li> 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 <li data-nav-id="/reference/cli_options/" title="" class="dd-item 1070 1071 1072 1073 "> 1074 <a href="/reference/cli_options/"> 1075 <b>Command Line Options</b> 1076 1077 </a> 1078 1079 1080 </li> 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 <li data-nav-id="/reference/application/" title="" class="dd-item 1094 1095 1096 1097 "> 1098 <a href="/reference/application/"> 1099 <b>Application Customization</b> 1100 1101 </a> 1102 1103 1104 <ul> 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 <li data-nav-id="/reference/application/custom_commands/" title="Custom Commands" class="dd-item "> 1119 <a href="/reference/application/custom_commands/"> 1120 Custom Commands 1121 1122 </a> 1123 </li> 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 <li data-nav-id="/reference/application/custom_flags/" title="Custom Flags" class="dd-item "> 1138 <a href="/reference/application/custom_flags/"> 1139 Custom Flags 1140 1141 </a> 1142 </li> 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 <li data-nav-id="/reference/application/environments/" title="Managing Environments" class="dd-item "> 1157 <a href="/reference/application/environments/"> 1158 Managing Environments 1159 1160 </a> 1161 </li> 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 <li data-nav-id="/reference/application/custom_lambda_resources/" title="CloudFormation Resources" class="dd-item "> 1176 <a href="/reference/application/custom_lambda_resources/"> 1177 CloudFormation Resources 1178 1179 </a> 1180 </li> 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 <li data-nav-id="/reference/application/custom_resources/" title="Custom Resources" class="dd-item "> 1195 <a href="/reference/application/custom_resources/"> 1196 Custom Resources 1197 1198 </a> 1199 </li> 1200 1201 1202 1203 1204 1205 1206 1207 </ul> 1208 1209 </li> 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 <li data-nav-id="/reference/step/" title="" class="dd-item 1223 1224 1225 1226 "> 1227 <a href="/reference/step/"> 1228 <b>Step Functions</b> 1229 1230 </a> 1231 1232 1233 <ul> 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 <li data-nav-id="/reference/step/lambda/" title="Lambda" class="dd-item "> 1250 <a href="/reference/step/lambda/"> 1251 Lambda 1252 1253 </a> 1254 </li> 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 <li data-nav-id="/reference/step/fargate/" title="Fargate" class="dd-item "> 1269 <a href="/reference/step/fargate/"> 1270 Fargate 1271 1272 </a> 1273 </li> 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 <li data-nav-id="/reference/step/services/" title="" class="dd-item 1288 1289 1290 1291 "> 1292 <a href="/reference/step/services/"> 1293 <b>Service Integrations</b> 1294 1295 </a> 1296 1297 1298 <ul> 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 <li data-nav-id="/reference/step/services/dynamodb/" title="Amazon DynamoDb" class="dd-item "> 1313 <a href="/reference/step/services/dynamodb/"> 1314 Amazon DynamoDb 1315 1316 </a> 1317 </li> 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 <li data-nav-id="/reference/step/services/sagemaker/" title="Amazon SageMaker" class="dd-item "> 1332 <a href="/reference/step/services/sagemaker/"> 1333 Amazon SageMaker 1334 1335 </a> 1336 </li> 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 <li data-nav-id="/reference/step/services/sns/" title="Amazon SNS" class="dd-item "> 1351 <a href="/reference/step/services/sns/"> 1352 Amazon SNS 1353 1354 </a> 1355 </li> 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 <li data-nav-id="/reference/step/services/sqs/" title="Amazon SQS" class="dd-item "> 1370 <a href="/reference/step/services/sqs/"> 1371 Amazon SQS 1372 1373 </a> 1374 </li> 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 <li data-nav-id="/reference/step/services/batch/" title="AWS Batch" class="dd-item "> 1389 <a href="/reference/step/services/batch/"> 1390 AWS Batch 1391 1392 </a> 1393 </li> 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 <li data-nav-id="/reference/step/services/fargate/" title="AWS Fargate" class="dd-item "> 1408 <a href="/reference/step/services/fargate/"> 1409 AWS Fargate 1410 1411 </a> 1412 </li> 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 <li data-nav-id="/reference/step/services/glue/" title="AWS Glue" class="dd-item "> 1427 <a href="/reference/step/services/glue/"> 1428 AWS Glue 1429 1430 </a> 1431 </li> 1432 1433 1434 1435 1436 1437 1438 1439 </ul> 1440 1441 </li> 1442 1443 1444 1445 1446 1447 1448 </ul> 1449 1450 </li> 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 <li data-nav-id="/reference/discovery/" title="Discovery Service" class="dd-item "> 1464 <a href="/reference/discovery/"> 1465 Discovery Service 1466 1467 </a> 1468 </li> 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 <li data-nav-id="/reference/docker/" title="Docker" class="dd-item "> 1483 <a href="/reference/docker/"> 1484 Docker 1485 1486 </a> 1487 </li> 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 <li data-nav-id="/reference/hybrid_topologies/" title="Hybrid Topologies" class="dd-item active"> 1502 <a href="/reference/hybrid_topologies/"> 1503 Hybrid Topologies 1504 1505 </a> 1506 </li> 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 <li data-nav-id="/reference/operations/" title="" class="dd-item 1521 1522 1523 1524 "> 1525 <a href="/reference/operations/"> 1526 <b>Operations</b> 1527 1528 </a> 1529 1530 1531 <ul> 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 <li data-nav-id="/reference/operations/magefile/" title="Magefiles" class="dd-item "> 1546 <a href="/reference/operations/magefile/"> 1547 Magefiles 1548 1549 </a> 1550 </li> 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 <li data-nav-id="/reference/operations/cloudwatch_alarms/" title="CloudWatch Alarms" class="dd-item "> 1565 <a href="/reference/operations/cloudwatch_alarms/"> 1566 CloudWatch Alarms 1567 1568 </a> 1569 </li> 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 <li data-nav-id="/reference/operations/cloudwatch_dashboard/" title="CloudWatch Dashboard" class="dd-item "> 1584 <a href="/reference/operations/cloudwatch_dashboard/"> 1585 CloudWatch Dashboard 1586 1587 </a> 1588 </li> 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 <li data-nav-id="/reference/operations/codedeploy_service_update/" title="CodeDeploy Service Update" class="dd-item "> 1603 <a href="/reference/operations/codedeploy_service_update/"> 1604 CodeDeploy Service Update 1605 1606 </a> 1607 </li> 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 <li data-nav-id="/reference/operations/cicd/" title="CI/CD" class="dd-item "> 1622 <a href="/reference/operations/cicd/"> 1623 CI/CD 1624 1625 </a> 1626 </li> 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 <li data-nav-id="/reference/operations/deployment_strategies/" title="Deployment Strategies" class="dd-item "> 1641 <a href="/reference/operations/deployment_strategies/"> 1642 Deployment Strategies 1643 1644 </a> 1645 </li> 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 <li data-nav-id="/reference/operations/metrics_publisher/" title="Metrics Publisher" class="dd-item "> 1660 <a href="/reference/operations/metrics_publisher/"> 1661 Metrics Publisher 1662 1663 </a> 1664 </li> 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 <li data-nav-id="/reference/operations/profiling/" title="Profiling" class="dd-item "> 1679 <a href="/reference/operations/profiling/"> 1680 Profiling 1681 1682 </a> 1683 </li> 1684 1685 1686 1687 1688 1689 1690 1691 </ul> 1692 1693 </li> 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 <li data-nav-id="/reference/testing/" title="Testing" class="dd-item "> 1707 <a href="/reference/testing/"> 1708 Testing 1709 1710 </a> 1711 </li> 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 <li data-nav-id="/reference/supporting_packages/" title="Supporting Packages" class="dd-item "> 1726 <a href="/reference/supporting_packages/"> 1727 Supporting Packages 1728 1729 </a> 1730 </li> 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 <li data-nav-id="/reference/limitations/" title="Limitations" class="dd-item "> 1745 <a href="/reference/limitations/"> 1746 Limitations 1747 1748 </a> 1749 </li> 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 <li data-nav-id="/reference/faq/" title="FAQ" class="dd-item "> 1764 <a href="/reference/faq/"> 1765 FAQ 1766 1767 </a> 1768 </li> 1769 1770 1771 1772 1773 1774 1775 1776 </ul> 1777 1778 </li> 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 <li data-nav-id="/presentations/" title="Presentations" class="dd-item 1790 1791 1792 1793 "> 1794 <a href="/presentations/"> 1795 Presentations 1796 1797 </a> 1798 1799 1800 </li> 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 <li data-nav-id="/meta/" title="Meta" class="dd-item 1812 1813 1814 1815 "> 1816 <a href="/meta/"> 1817 Meta 1818 1819 </a> 1820 1821 1822 </li> 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 <li data-nav-id="/credits/" title="Credits" class="dd-item 1834 1835 1836 1837 "> 1838 <a href="/credits/"> 1839 Credits 1840 1841 </a> 1842 1843 1844 </li> 1845 1846 1847 1848 1849 1850 </ul> 1851 1852 1853 1854 <section id="shortcuts"> 1855 <h3>More</h3> 1856 <ul> 1857 1858 <li> 1859 <a class="padding" href="https://github.com/mweagle/Sparta"><i class='fab fa-fw fa-github'></i> Github repo</a> 1860 </li> 1861 1862 <li> 1863 <a class="padding" href="https://github.com/mweagle?utf8=%E2%9C%93&tab=repositories&q=Sparta&type=&language="><i class='fas fa-fw fa-camera'></i> Showcases</a> 1864 </li> 1865 1866 <li> 1867 <a class="padding" href="https://github.com/mweagle/Sparta/blob/master/CHANGES.md"><i class='fas fa-fw fa-signal'></i> Release History</a> 1868 </li> 1869 1870 </ul> 1871 </section> 1872 1873 1874 1875 <section id="footer"> 1876 1877 Build: <a target="_blank" href="https://github.com/mweagle/Sparta/commit/46463572">46463572</a><p/> 1878 Date: 2020-05-02T17:11:51-07:00 1879 1880 1881 <p>Built with <a href="https://github.com/matcornic/hugo-theme-learn"><i class="fas fa-heart"></i></a> from <a href="http://getgrav.org">Grav</a> and <a href="http://gohugo.io/">Hugo</a></p> 1882 1883 </section> 1884 </div> 1885 </nav> 1886 1887 1888 1889 1890 1891 <section id="body"> 1892 <div id="overlay"></div> 1893 <div class="padding highlightable"> 1894 1895 <div> 1896 <div id="top-bar"> 1897 1898 1899 1900 1901 <div id="top-github-link"> 1902 <a class="github-link" title='Edit this page' href="https://github.com/mweagle/Sparta/tree/docs/content/reference/hybrid_topologies.md" target="blank"> 1903 <i class="fas fa-code-branch"></i> 1904 <span id="top-github-link-text">Edit this page</span> 1905 </a> 1906 </div> 1907 1908 1909 1910 <div id="breadcrumbs" itemscope="" itemtype="http://data-vocabulary.org/Breadcrumb"> 1911 <span id="sidebar-toggle-span"> 1912 <a href="#" id="sidebar-toggle" data-sidebar-toggle=""> 1913 <i class="fas fa-bars"></i> 1914 </a> 1915 </span> 1916 1917 <span id="toc-menu"><i class="fas fa-list-alt"></i></span> 1918 1919 <span class="links"> 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 <a href='/'></a> > <a href='/reference/'>Reference</a> > Hybrid Topologies 1934 1935 1936 1937 1938 1939 1940 1941 </span> 1942 </div> 1943 1944 <div class="progress"> 1945 <div class="wrapper"> 1946 <nav id="TableOfContents"> 1947 <ul> 1948 <li><a href="#add-custom-command-line-option">Add Custom Command Line Option</a></li> 1949 <li><a href="#create-cloudinit-userdata">Create CloudInit Userdata</a> 1950 <ul> 1951 <li><a href="#notes">Notes</a></li> 1952 </ul> 1953 </li> 1954 <li><a href="#decorate-toplogy">Decorate Toplogy</a></li> 1955 </ul> 1956 1957 <ul> 1958 <li><a href="#http-access">HTTP Access</a></li> 1959 <li><a href="#lambda-access">Lambda Access</a></li> 1960 </ul> 1961 </nav> 1962 </div> 1963 </div> 1964 1965 1966 </div> 1967 </div> 1968 1969 <div id="head-tags"> 1970 1971 </div> 1972 1973 <div id="body-inner"> 1974 1975 <h1> 1976 1977 Hybrid Topologies 1978 </h1> 1979 1980 1981 1982 1983 1984 1985 <p>At a broad level, AWS Lambda represents a new level of compute abstraction for services. Developers don’t immediately concern themselves with HA topologies, configuration management, capacity planning, or many of the other areas traditionally handled by operations. These are handled by the vendor supplied execution environment.</p> 1986 <p>However, Lambda is a relatively new technology and is not ideally suited to certain types of tasks. For example, given the current <a href="http://docs.aws.amazon.com/lambda/latest/dg/limits.html">Lambda limits</a>, the following task types might better be handled by “legacy” AWS services:</p> 1987 <ul> 1988 <li>Long running tasks</li> 1989 <li>Tasks with significant disk space requirements</li> 1990 <li>Large HTTP(S) I/O tasks</li> 1991 </ul> 1992 <p>It may also make sense to integrate EC2 when:</p> 1993 <ul> 1994 <li>Applications are being gradually decomposed into Lambda functions</li> 1995 <li>Latency-sensitive request paths can’t afford <a href="https://aws.amazon.com/blogs/compute/container-reuse-in-lambda/">cold container</a> startup times</li> 1996 <li>Price/performance justifies using EC2</li> 1997 <li>Using EC2 as a failover for system-wide Lambda outages</li> 1998 </ul> 1999 <p>For such cases, Sparta supports running the exact same binary on EC2. This section describes how to create a single Sparta service that publishes a function via AWS Lambda <em>and</em> EC2 as part of the same application codebase. It’s based on the <a href="https://github.com/mweagle/SpartaOmega">SpartaOmega</a> project.</p> 2000 <h1 id="mixed-topology">Mixed Topology</h1> 2001 <p>Deploying your application to a mixed topology is accomplished by combining existing Sparta features. There is no “make mixed” command line option.</p> 2002 <h2 id="add-custom-command-line-option">Add Custom Command Line Option</h2> 2003 <p>The first step is to add a <a href="/reference/application/custom_commands">custom command line option</a>. This command option will be used when your binary is running in “mixed topology” mode. The SpartaOmega project starts up a localhost HTTP server, so we’ll add a <code>httpServer</code> command line option with:</p> 2004 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-go" data-lang="go"><span style="color:#008000">// Custom command to startup a simple HelloWorld HTTP server 2005 </span><span style="color:#008000"></span>httpServerCommand := &cobra.Command{ 2006 Use: <span style="color:#a31515">"httpServer"</span>, 2007 Short: <span style="color:#a31515">"Sample HelloWorld HTTP server"</span>, 2008 Long: <span style="color:#a31515">`Sample HelloWorld HTTP server that binds to port: `</span> + HTTPServerPort, 2009 RunE: <span style="color:#00f">func</span>(cmd *cobra.Command, args []<span style="color:#2b91af">string</span>) <span style="color:#2b91af">error</span> { 2010 http.HandleFunc(<span style="color:#a31515">"/"</span>, helloWorldResource) 2011 <span style="color:#00f">return</span> http.ListenAndServe(fmt.Sprintf(<span style="color:#a31515">":%d"</span>, HTTPServerPort), <span style="color:#00f">nil</span>) 2012 }, 2013 } 2014 sparta.CommandLineOptions.Root.AddCommand(httpServerCommand) 2015 </code></pre></div><p>Our command doesn’t accept any additional flags. If your command needs additional user flags, consider adding a <a href="https://godoc.org/github.com/mweagle/Sparta#ParseOptions">ParseOptions</a> call to validate they are properly set.</p> 2016 <h2 id="create-cloudinit-userdata">Create CloudInit Userdata</h2> 2017 <p>The next step is to write a <a href="http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html">user-data</a> script that will be used to configure your EC2 instance(s) at startup. Your script is likely to differ from the one below, but at a minimum it will include code to download and unzip the archive containing your Sparta binary.</p> 2018 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-bash" data-lang="bash"><span style="color:#00f">#!/bin/bash -xe 2019 </span><span style="color:#00f"></span><span style="color:#008000">#!/bin/bash -xe</span> 2020 SPARTA_OMEGA_BINARY_PATH=/home/ubuntu/{{.SpartaBinaryName}} 2021 2022 <span style="color:#008000">################################################################################</span> 2023 # 2024 <span style="color:#008000"># Tested on Ubuntu 16.04</span> 2025 # 2026 <span style="color:#008000"># AMI: ubuntu/images/hvm-ssd/ubuntu-xenial-16.04-amd64-server-20160516.1 (ami-06b94666)</span> 2027 <span style="color:#00f">if</span> [ ! -f <span style="color:#a31515">"/home/ubuntu/userdata.sh"</span> ] 2028 <span style="color:#00f">then</span> 2029 curl -vs http://169.254.169.254/latest/user-data -o /home/ubuntu/userdata.sh 2030 chmod +x /home/ubuntu/userdata.sh 2031 <span style="color:#00f">fi</span> 2032 2033 <span style="color:#008000"># Install everything</span> 2034 service supervisor stop || true 2035 apt-get update -y 2036 apt-get upgrade -y 2037 apt-get install supervisor awscli unzip git -y 2038 2039 <span style="color:#008000">################################################################################</span> 2040 <span style="color:#008000"># Our own binary</span> 2041 aws s3 cp s3://{{ .S3Bucket }}/{{ .S3Key }} /home/ubuntu/application.zip 2042 unzip -o /home/ubuntu/application.zip -d /home/ubuntu 2043 chmod +x $SPARTA_OMEGA_BINARY_PATH 2044 2045 <span style="color:#008000">################################################################################</span> 2046 <span style="color:#008000"># SUPERVISOR</span> 2047 <span style="color:#008000"># REF: http://supervisord.org/</span> 2048 <span style="color:#008000"># Cleanout secondary directory</span> 2049 mkdir -pv /etc/supervisor/conf.d 2050 2051 SPARTA_OMEGA_SUPERVISOR_CONF=<span style="color:#a31515">"[program:spartaomega] 2052 </span><span style="color:#a31515">command=</span>$SPARTA_OMEGA_BINARY_PATH<span style="color:#a31515"> httpServer 2053 </span><span style="color:#a31515">numprocs=1 2054 </span><span style="color:#a31515">directory=/tmp 2055 </span><span style="color:#a31515">priority=999 2056 </span><span style="color:#a31515">autostart=true 2057 </span><span style="color:#a31515">autorestart=unexpected 2058 </span><span style="color:#a31515">startsecs=10 2059 </span><span style="color:#a31515">startretries=3 2060 </span><span style="color:#a31515">exitcodes=0,2 2061 </span><span style="color:#a31515">stopsignal=TERM 2062 </span><span style="color:#a31515">stopwaitsecs=10 2063 </span><span style="color:#a31515">stopasgroup=false 2064 </span><span style="color:#a31515">killasgroup=false 2065 </span><span style="color:#a31515">user=ubuntu 2066 </span><span style="color:#a31515">stdout_logfile=/var/log/spartaomega.log 2067 </span><span style="color:#a31515">stdout_logfile_maxbytes=1MB 2068 </span><span style="color:#a31515">stdout_logfile_backups=10 2069 </span><span style="color:#a31515">stdout_capture_maxbytes=1MB 2070 </span><span style="color:#a31515">stdout_events_enabled=false 2071 </span><span style="color:#a31515">redirect_stderr=false 2072 </span><span style="color:#a31515">stderr_logfile=spartaomega.err.log 2073 </span><span style="color:#a31515">stderr_logfile_maxbytes=1MB 2074 </span><span style="color:#a31515">stderr_logfile_backups=10 2075 </span><span style="color:#a31515">stderr_capture_maxbytes=1MB 2076 </span><span style="color:#a31515">stderr_events_enabled=false 2077 </span><span style="color:#a31515">"</span> 2078 echo <span style="color:#a31515">"</span>$SPARTA_OMEGA_SUPERVISOR_CONF<span style="color:#a31515">"</span> > /etc/supervisor/conf.d/spartaomega.conf 2079 2080 <span style="color:#008000"># Patch up the directory</span> 2081 chown -R ubuntu:ubuntu /home/ubuntu 2082 2083 <span style="color:#008000"># Startup Supervisor</span> 2084 service supervisor restart || service supervisor start 2085 </code></pre></div><p>The script uses the command line option (<code>command=$SPARTA_OMEGA_BINARY_PATH httpServer</code>) that was defined in the first step.</p> 2086 <p>It also uses the <code>S3Bucket</code> and <code>S3Key</code> properties that Sparta creates during the build and provides to your decorator function (next section).</p> 2087 <h3 id="notes">Notes</h3> 2088 <p>The script is using <a href="https://golang.org/pkg/text/template/">text/template</a> markup to expand properties known at build time. Because this content will be parsed by <a href="https://godoc.org/github.com/mweagle/Sparta/aws/cloudformation#ConvertToTemplateExpression">ConvertToTemplateExpression</a> (next section), it’s also possible to use <a href="http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-join.html">Fn::Join</a> compatible JSON serializations (single line only) to reference properties that are known only during CloudFormation provision time.</p> 2089 <p>For example, if we were also provisioning a PostgreSQL instance and needed to dynamically discover the endpoint address, a shell script variable could be assigned via:</p> 2090 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-bash" data-lang="bash">POSTGRES_ADDRESS={ <span style="color:#a31515">"Fn::GetAtt"</span> : [ <span style="color:#a31515">"{{ .DBInstanceResourceName }}"</span> , <span style="color:#a31515">"Endpoint.Address"</span> ] } 2091 </code></pre></div><p>This expression combines both a build-time variable (<code>DBInstanceResourceName</code>: the CloudFormation resource name) and a provision time one (<code>Endpoint.Address</code>: dynamically assigned by the CloudFormation <a href="http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-getatt.html">RDS Resource</a>).</p> 2092 <h2 id="decorate-toplogy">Decorate Toplogy</h2> 2093 <p>The final step is to use a <a href="https://godoc.org/github.com/mweagle/Sparta#TemplateDecorator">TemplateDecorator</a> to tie everything together. A decorator can annotate the CloudFormation template with any supported <a href="https://github.com/crewjam/go-cloudformation">go-cloudformation</a> resource. For this example, we’ll create a single AutoScalingGroup and EC2 instance that’s bootstrapped with our custom <em>userdata.sh</em> script.</p> 2094 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-go" data-lang="go"> 2095 <span style="color:#008000">// The CloudFormation template decorator that inserts all the other 2096 </span><span style="color:#008000">// AWS components we need to support this deployment... 2097 </span><span style="color:#008000"></span><span style="color:#00f">func</span> lambdaDecorator(customResourceAMILookupName <span style="color:#2b91af">string</span>) sparta.TemplateDecorator { 2098 2099 <span style="color:#00f">return</span> <span style="color:#00f">func</span>(serviceName <span style="color:#2b91af">string</span>, 2100 lambdaResourceName <span style="color:#2b91af">string</span>, 2101 lambdaResource gocf.LambdaFunction, 2102 resourceMetadata <span style="color:#00f">map</span>[<span style="color:#2b91af">string</span>]<span style="color:#00f">interface</span>{}, 2103 S3Bucket <span style="color:#2b91af">string</span>, 2104 S3Key <span style="color:#2b91af">string</span>, 2105 buildID <span style="color:#2b91af">string</span>, 2106 cfTemplate *gocf.Template, 2107 context <span style="color:#00f">map</span>[<span style="color:#2b91af">string</span>]<span style="color:#00f">interface</span>{}, 2108 logger *logrus.Logger) <span style="color:#2b91af">error</span> { 2109 2110 <span style="color:#008000">// Create the launch configuration with Metadata to download the ZIP file, unzip it & launch the 2111 </span><span style="color:#008000"></span> <span style="color:#008000">// golang binary... 2112 </span><span style="color:#008000"></span> ec2SecurityGroupResourceName := sparta.CloudFormationResourceName(<span style="color:#a31515">"SpartaOmegaSecurityGroup"</span>, 2113 <span style="color:#a31515">"SpartaOmegaSecurityGroup"</span>) 2114 asgLaunchConfigurationName := sparta.CloudFormationResourceName(<span style="color:#a31515">"SpartaOmegaASGLaunchConfig"</span>, 2115 <span style="color:#a31515">"SpartaOmegaASGLaunchConfig"</span>) 2116 asgResourceName := sparta.CloudFormationResourceName(<span style="color:#a31515">"SpartaOmegaASG"</span>, 2117 <span style="color:#a31515">"SpartaOmegaASG"</span>) 2118 ec2InstanceRoleName := sparta.CloudFormationResourceName(<span style="color:#a31515">"SpartaOmegaEC2InstanceRole"</span>, 2119 <span style="color:#a31515">"SpartaOmegaEC2InstanceRole"</span>) 2120 ec2InstanceProfileName := sparta.CloudFormationResourceName(<span style="color:#a31515">"SpartaOmegaEC2InstanceProfile"</span>, 2121 <span style="color:#a31515">"SpartaOmegaEC2InstanceProfile"</span>) 2122 2123 <span style="color:#008000">////////////////////////////////////////////////////////////////////////////// 2124 </span><span style="color:#008000"></span> <span style="color:#008000">// 1 - Create the security group for the SpartaOmega EC2 instance 2125 </span><span style="color:#008000"></span> ec2SecurityGroup := &gocf.EC2SecurityGroup{ 2126 GroupDescription: gocf.String(<span style="color:#a31515">"SpartaOmega Security Group"</span>), 2127 SecurityGroupIngress: &gocf.EC2SecurityGroupRuleList{ 2128 gocf.EC2SecurityGroupRule{ 2129 CidrIp: gocf.String(<span style="color:#a31515">"0.0.0.0/0"</span>), 2130 IpProtocol: gocf.String(<span style="color:#a31515">"tcp"</span>), 2131 FromPort: gocf.Integer(HTTPServerPort), 2132 ToPort: gocf.Integer(HTTPServerPort), 2133 }, 2134 gocf.EC2SecurityGroupRule{ 2135 CidrIp: gocf.String(<span style="color:#a31515">"0.0.0.0/0"</span>), 2136 IpProtocol: gocf.String(<span style="color:#a31515">"tcp"</span>), 2137 FromPort: gocf.Integer(22), 2138 ToPort: gocf.Integer(22), 2139 }, 2140 }, 2141 } 2142 template.AddResource(ec2SecurityGroupResourceName, ec2SecurityGroup) 2143 <span style="color:#008000">////////////////////////////////////////////////////////////////////////////// 2144 </span><span style="color:#008000"></span> <span style="color:#008000">// 2 - Create the ASG and associate the userdata with the EC2 init 2145 </span><span style="color:#008000"></span> <span style="color:#008000">// EC2 Instance Role... 2146 </span><span style="color:#008000"></span> statements := sparta.CommonIAMStatements.Core 2147 2148 <span style="color:#008000">// Add the statement that allows us to fetch the S3 object with this compiled 2149 </span><span style="color:#008000"></span> <span style="color:#008000">// binary 2150 </span><span style="color:#008000"></span> statements = append(statements, spartaIAM.PolicyStatement{ 2151 Effect: <span style="color:#a31515">"Allow"</span>, 2152 Action: []<span style="color:#2b91af">string</span>{<span style="color:#a31515">"s3:GetObject"</span>}, 2153 Resource: gocf.String(fmt.Sprintf(<span style="color:#a31515">"arn:aws:s3:::%s/%s"</span>, S3Bucket, S3Key)), 2154 }) 2155 iamPolicyList := gocf.IAMPoliciesList{} 2156 iamPolicyList = append(iamPolicyList, 2157 gocf.IAMPolicies{ 2158 PolicyDocument: sparta.ArbitraryJSONObject{ 2159 <span style="color:#a31515">"Version"</span>: <span style="color:#a31515">"2012-10-17"</span>, 2160 <span style="color:#a31515">"Statement"</span>: statements, 2161 }, 2162 PolicyName: gocf.String(<span style="color:#a31515">"EC2Policy"</span>), 2163 }, 2164 ) 2165 ec2InstanceRole := &gocf.IAMRole{ 2166 AssumeRolePolicyDocument: sparta.AssumePolicyDocument, 2167 Policies: &iamPolicyList, 2168 } 2169 template.AddResource(ec2InstanceRoleName, ec2InstanceRole) 2170 2171 <span style="color:#008000">// Create the instance profile 2172 </span><span style="color:#008000"></span> ec2InstanceProfile := &gocf.IAMInstanceProfile{ 2173 Path: gocf.String(<span style="color:#a31515">"/"</span>), 2174 Roles: []gocf.Stringable{gocf.Ref(ec2InstanceRoleName).String()}, 2175 } 2176 template.AddResource(ec2InstanceProfileName, ec2InstanceProfile) 2177 2178 <span style="color:#008000">//Now setup the properties map, expand the userdata, and attach it... 2179 </span><span style="color:#008000"></span> userDataProps := <span style="color:#00f">map</span>[<span style="color:#2b91af">string</span>]<span style="color:#00f">interface</span>{}{ 2180 <span style="color:#a31515">"S3Bucket"</span>: S3Bucket, 2181 <span style="color:#a31515">"S3Key"</span>: S3Key, 2182 <span style="color:#a31515">"ServiceName"</span>: serviceName, 2183 } 2184 2185 userDataTemplateInput, userDataTemplateInputErr := resources.FSString(<span style="color:#00f">false</span>, <span style="color:#a31515">"/resources/source/userdata.sh"</span>) 2186 <span style="color:#00f">if</span> <span style="color:#00f">nil</span> != userDataTemplateInputErr { 2187 <span style="color:#00f">return</span> userDataTemplateInputErr 2188 } 2189 templateReader := strings.NewReader(userDataTemplateInput) 2190 userDataExpression, userDataExpressionErr := spartaCF.ConvertToTemplateExpression(templateReader, 2191 userDataProps) 2192 <span style="color:#00f">if</span> <span style="color:#00f">nil</span> != userDataExpressionErr { 2193 <span style="color:#00f">return</span> userDataExpressionErr 2194 } 2195 2196 logger.WithFields(logrus.Fields{ 2197 <span style="color:#a31515">"Parameters"</span>: userDataProps, 2198 <span style="color:#a31515">"Expanded"</span>: userDataExpression, 2199 }).Debug(<span style="color:#a31515">"Expanded userdata"</span>) 2200 2201 asgLaunchConfigurationResource := &gocf.AutoScalingLaunchConfiguration{ 2202 ImageId: gocf.GetAtt(customResourceAMILookupName, <span style="color:#a31515">"HVM"</span>), 2203 InstanceType: gocf.String(<span style="color:#a31515">"t2.micro"</span>), 2204 KeyName: gocf.String(SSHKeyName), 2205 IamInstanceProfile: gocf.Ref(ec2InstanceProfileName).String(), 2206 UserData: gocf.Base64(userDataExpression), 2207 SecurityGroups: gocf.StringList(gocf.GetAtt(ec2SecurityGroupResourceName, <span style="color:#a31515">"GroupId"</span>)), 2208 } 2209 launchConfigResource := template.AddResource(asgLaunchConfigurationName, 2210 asgLaunchConfigurationResource) 2211 launchConfigResource.DependsOn = append(launchConfigResource.DependsOn, 2212 customResourceAMILookupName) 2213 2214 <span style="color:#008000">// Create the ASG 2215 </span><span style="color:#008000"></span> asgResource := &gocf.AutoScalingAutoScalingGroup{ 2216 <span style="color:#008000">// Empty Region is equivalent to all region AZs 2217 </span><span style="color:#008000"></span> <span style="color:#008000">// Ref: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-getavailabilityzones.html 2218 </span><span style="color:#008000"></span> AvailabilityZones: gocf.GetAZs(gocf.String(<span style="color:#a31515">""</span>)), 2219 LaunchConfigurationName: gocf.Ref(asgLaunchConfigurationName).String(), 2220 MaxSize: gocf.String(<span style="color:#a31515">"1"</span>), 2221 MinSize: gocf.String(<span style="color:#a31515">"1"</span>), 2222 } 2223 template.AddResource(asgResourceName, asgResource) 2224 <span style="color:#00f">return</span> <span style="color:#00f">nil</span> 2225 } 2226 } 2227 </code></pre></div><p>There are a few things to point out in this function:</p> 2228 <ul> 2229 <li><strong>Security Groups</strong> - The decorator adds an ingress rule so that the endpoint is publicly accessible:</li> 2230 </ul> 2231 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-go" data-lang="go"> gocf.EC2SecurityGroupRule{ 2232 CidrIp: gocf.String(<span style="color:#a31515">"0.0.0.0/0"</span>), 2233 IpProtocol: gocf.String(<span style="color:#a31515">"tcp"</span>), 2234 FromPort: gocf.Integer(HTTPServerPort), 2235 ToPort: gocf.Integer(HTTPServerPort), 2236 } 2237 </code></pre></div><ul> 2238 <li><strong>IAM Role</strong> - In order to download the S3 archive, the EC2 IAM Policy includes a custom privilege:</li> 2239 </ul> 2240 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-go" data-lang="go"> statements = append(statements, spartaIAM.PolicyStatement{ 2241 Effect: <span style="color:#a31515">"Allow"</span>, 2242 Action: []<span style="color:#2b91af">string</span>{<span style="color:#a31515">"s3:GetObject"</span>}, 2243 Resource: gocf.String(fmt.Sprintf(<span style="color:#a31515">"arn:aws:s3:::%s/%s"</span>, S3Bucket, S3Key)), 2244 }) 2245 </code></pre></div><ul> 2246 <li><strong>UserData Marshaling</strong> - Marshaling the <em>userdata.sh</em> script is handled by <code>ConvertToTemplateExpression</code>:</li> 2247 </ul> 2248 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-go" data-lang="go"> <span style="color:#008000">// Now setup the properties map, expand the userdata, and attach it... 2249 </span><span style="color:#008000"></span> userDataProps := <span style="color:#00f">map</span>[<span style="color:#2b91af">string</span>]<span style="color:#00f">interface</span>{}{ 2250 <span style="color:#a31515">"S3Bucket"</span>: S3Bucket, 2251 <span style="color:#a31515">"S3Key"</span>: S3Key, 2252 <span style="color:#a31515">"ServiceName"</span>: serviceName, 2253 } 2254 <span style="color:#008000">// ... 2255 </span><span style="color:#008000"></span> templateReader := strings.NewReader(userDataTemplateInput) 2256 userDataExpression, userDataExpressionErr := spartaCF.ConvertToTemplateExpression(templateReader, 2257 userDataProps) 2258 <span style="color:#008000">// ... 2259 </span><span style="color:#008000"></span> asgLaunchConfigurationResource := &gocf.AutoScalingLaunchConfiguration{ 2260 <span style="color:#008000">// ... 2261 </span><span style="color:#008000"></span> UserData: gocf.Base64(userDataExpression), 2262 <span style="color:#008000">// ... 2263 </span><span style="color:#008000"></span> } 2264 </code></pre></div><ul> 2265 <li><strong>Custom Command Line Flags</strong> - To externalize the SSH Key Name, the binary expects a <a href="/reference/application/custom_flags">custom flag</a> (not shown above):</li> 2266 </ul> 2267 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-go" data-lang="go"> <span style="color:#008000">// And add the SSHKeyName option to the provision step 2268 </span><span style="color:#008000"></span> sparta.CommandLineOptions.Provision.Flags().StringVarP(&SSHKeyName, 2269 <span style="color:#a31515">"key"</span>, 2270 <span style="color:#a31515">"k"</span>, 2271 <span style="color:#a31515">""</span>, 2272 <span style="color:#a31515">"SSH Key Name to use for EC2 instances"</span>) 2273 </code></pre></div><p>This value is used as an input to the AutoScalingLaunchConfiguration value:</p> 2274 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-go" data-lang="go"> asgLaunchConfigurationResource := &gocf.AutoScalingLaunchConfiguration{ 2275 <span style="color:#008000">// ... 2276 </span><span style="color:#008000"></span> KeyName: gocf.String(SSHKeyName), 2277 <span style="color:#008000">// ... 2278 </span><span style="color:#008000"></span> } 2279 </code></pre></div><h1 id="result">Result</h1> 2280 <p>Deploying your Go application using a mixed topology enables your “Lambda” endpoint to be addressable via AWS Lambda and standard HTTP.</p> 2281 <h2 id="http-access">HTTP Access</h2> 2282 <div class="highlight"><pre style="background-color:#fff;-moz-tab-size:2;-o-tab-size:2;tab-size:2"><code class="language-bash" data-lang="bash"> 2283 $ curl -vs http://ec2-52-26-146-138.us-west-2.compute.amazonaws.com:9999/ 2284 * Trying 52.26.146.138... 2285 * Connected to ec2-52-26-146-138.us-west-2.compute.amazonaws.com (52.26.146.138) port 9999 (<span style="color:#008000">#0)</span> 2286 > GET / HTTP/1.1 2287 > Host: ec2-52-26-146-138.us-west-2.compute.amazonaws.com:9999 2288 > User-Agent: curl/7.43.0 2289 > Accept: */* 2290 > 2291 < HTTP/1.1 200 OK 2292 < Date: Fri, 10 Jun 2016 14:58:15 GMT 2293 < Content-Length: 29 2294 < Content-Type: text/plain; charset=utf-8 2295 < 2296 * Connection <span style="color:#008000">#0 to host ec2-52-26-146-138.us-west-2.compute.amazonaws.com left intact</span> 2297 Hello world from SpartaOmega! 2298 </code></pre></div><h2 id="lambda-access">Lambda Access</h2> 2299 <p><img src="/images/alternative_topology/lambda.jpg" alt="Lambda"></p> 2300 <h1 id="conclusion">Conclusion</h1> 2301 <p>Mixed topology deployment is a powerful feature that enables your application to choose the right set of resources. It provides a way for services to non-destructively migrate to AWS Lambda or shift existing Lambda workloads to alternative compute resources.</p> 2302 <h1 id="notes-1">Notes</h1> 2303 <ul> 2304 <li>The <a href="https://github.com/mweagle/SpartaOmega">SpartaOmega</a> sample application uses <a href="http://supervisord.org/">supervisord</a> for process monitoring.</li> 2305 <li>The current <em>userdata.sh</em> script isn’t sufficient to reconfigure in response to CloudFormation update events. Production systems should also include <a href="http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-hup.html">cfn-hup</a> listeners.</li> 2306 <li>Production deployments may consider <a href="https://aws.amazon.com/codedeploy/">CodeDeploy</a> to assist in HA binary rollover.</li> 2307 <li>Forwarding <a href="http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/WhatIsCloudWatchLogs.html">CloudWatch Logs</a> is not handled by this sample.</li> 2308 <li>Consider using HTTPS & <a href="https://ivopetkov.com/b/let-s-encrypt-on-ec2/">Let’s Encrypt</a> on your EC2 instances.</li> 2309 </ul> 2310 2311 2312 <footer class="footline"> 2313 2314 </footer> 2315 2316 2317 </div> 2318 2319 2320 </div> 2321 2322 <div id="navigation"> 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 <a class="nav nav-prev" href="/reference/docker/" title="Docker"> <i class="fa fa-chevron-left"></i></a> 3695 3696 3697 <a class="nav nav-next" href="/reference/operations/" title="" style="margin-right: 0px;"><i class="fa fa-chevron-right"></i></a> 3698 3699 3700 </div> 3701 3702 </section> 3703 3704 <div style="left: -1000px; overflow: scroll; position: absolute; top: -1000px; border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"> 3705 <div style="border: none; box-sizing: content-box; height: 200px; margin: 0px; padding: 0px; width: 200px;"></div> 3706 </div> 3707 <script src="/js/clipboard.min.js?1588464711"></script> 3708 <script src="/js/perfect-scrollbar.min.js?1588464711"></script> 3709 <script src="/js/perfect-scrollbar.jquery.min.js?1588464711"></script> 3710 <script src="/js/jquery.sticky.js?1588464711"></script> 3711 <script src="/js/featherlight.min.js?1588464711"></script> 3712 <script src="/js/html5shiv-printshiv.min.js?1588464711"></script> 3713 <script src="/js/modernizr.custom-3.6.0.js?1588464711"></script> 3714 <script src="/js/learn.js?1588464711"></script> 3715 <script src="/js/hugo-learn.js?1588464711"></script> 3716 3717 <link href="/mermaid/mermaid.css?1588464711" rel="stylesheet" /> 3718 <script src="/mermaid/mermaid.js?1588464711"></script> 3719 <script> 3720 mermaid.initialize({ startOnLoad: true }); 3721 </script> 3722 3723 <script async src="https://www.googletagmanager.com/gtag/js?id=UA-70794971-2"></script> 3724 <script> 3725 window.dataLayer = window.dataLayer || []; 3726 function gtag(){dataLayer.push(arguments);} 3727 gtag('js', new Date()); 3728 3729 gtag('config', 'UA-70794971-2'); 3730 </script> 3731 </body> 3732 </html> 3733