summaryrefslogtreecommitdiff
path: root/python-aws-cdk-aws-lambda-go-alpha.spec
blob: 34cda11ca1129cc78711ee300bccd6c572994ff3 (plain)
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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
%global _empty_manifest_terminate_build 0
Name:		python-aws-cdk.aws-lambda-go-alpha
Version:	2.81.0a0
Release:	1
Summary:	The CDK Construct Library for AWS Lambda in Golang
License:	Apache-2.0
URL:		https://github.com/aws/aws-cdk
Source0:	https://mirrors.nju.edu.cn/pypi/web/packages/1a/39/2d13bb75fec2ab385249e86054aba62ab1ecb8bf84d09e0f7c841014b8b1/aws-cdk.aws-lambda-go-alpha-2.81.0a0.tar.gz
BuildArch:	noarch

Requires:	python3-aws-cdk-lib
Requires:	python3-constructs
Requires:	python3-jsii
Requires:	python3-publication
Requires:	python3-typeguard

%description
<!--END STABILITY BANNER-->
This library provides constructs for Golang Lambda functions.
To use this module you will either need to have `Go` installed (`go1.11` or later) or `Docker` installed.
See [Local Bundling](#local-bundling)/[Docker Bundling](#docker-bundling) for more information.
This module also requires that your Golang application is
using a Go version >= 1.11 and is using [Go modules](https://golang.org/ref/mod).
## Go Function
Define a `GoFunction`:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api"
)
```
By default, if `entry` points to a directory, then the construct will assume there is a Go entry file (i.e. `main.go`).
Let's look at an example Go project:
```bash
lamda-app
├── cmd
│   └── api
│       └── main.go
├── go.mod
├── go.sum
├── pkg
│   ├── auth
│   │   └── auth.go
│   └── middleware
│       └── middleware.go
└── vendor
    ├── github.com
    │   └── aws
    │       └── aws-lambda-go
    └── modules.txt
```
With the above layout I could either provide the `entry` as `lambda-app/cmd/api` or `lambda-app/cmd/api/main.go`, either will work.
When the construct builds the golang binary this will be translated `go build ./cmd/api` & `go build ./cmd/api/main.go` respectively.
The construct will figure out where it needs to run the `go build` command from, in this example it would be from
the `lambda-app` directory. It does this by determining the [mod file path](#mod-file-path), which is explained in the
next section.
### mod file path
The `GoFunction` tries to automatically determine your project root, that is
the root of your golang project. This is usually where the top level `go.mod` file or
`vendor` folder of your project is located. When bundling in a Docker container, the
`moduleDir` is used as the source (`/asset-input`) for the volume mounted in
the container.
The CDK will walk up parent folders starting from
the current working directory until it finds a folder containing a `go.mod` file.
Alternatively, you can specify the `moduleDir` prop manually. In this case you
need to ensure that this path includes `entry` and any module/dependencies used
by your function. Otherwise bundling will fail.
## Runtime
The `GoFunction` can be used with either the `GO_1_X` runtime or the provided runtimes (`PROVIDED`/`PROVIDED_AL2`).
By default it will use the `PROVIDED_AL2` runtime. The `GO_1_X` runtime does not support things like
[Lambda Extensions](https://docs.aws.amazon.com/lambda/latest/dg/using-extensions.html), whereas the provided runtimes do.
The [aws-lambda-go](https://github.com/aws/aws-lambda-go) library has built in support for the provided runtime as long as
you name the handler `bootstrap` (which we do by default).
## Dependencies
The construct will attempt to figure out how to handle the dependencies for your function. It will
do this by determining whether or not you are vendoring your dependencies. It makes this determination
by looking to see if there is a `vendor` folder at the [mod file path](#mod-file-path).
With this information the construct can determine what commands to run. You will
generally fall into two scenarios:
1. You are using vendoring (indicated by the presence of a `vendor` folder)
   In this case `go build` will be run with `-mod=vendor` set
2. You are not using vendoring (indicated by the absence of a `vendor` folder)
   If you are not vendoring then `go build` will be run without `-mod=vendor`
   since the default behavior is to download dependencies
All other properties of `lambda.Function` are supported, see also the [AWS Lambda construct library](https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/aws-lambda).
## Environment
By default the following environment variables are set for you:
* `GOOS=linux`
* `GOARCH`: based on the target architecture of the Lambda function
* `GO111MODULE=on`
Use the `environment` prop to define additional environment variables when go runs:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        environment={
            "HELLO": "WORLD"
        }
    )
)
```
## Local Bundling
If `Go` is installed locally and the version is >= `go1.11` then it will be used to bundle your code in your environment. Otherwise, bundling will happen in a [Lambda compatible Docker container](https://gallery.ecr.aws/sam/build-go1.x) with the Docker platform based on the target architecture of the Lambda function.
For macOS the recommended approach is to install `Go` as Docker volume performance is really poor.
`Go` can be installed by following the [installation docs](https://golang.org/doc/install).
## Docker
To force bundling in a docker container even if `Go` is available in your environment, set the `forceDockerBundling` prop to `true`. This is useful if you want to make sure that your function is built in a consistent Lambda compatible environment.
Use the `buildArgs` prop to pass build arguments when building the bundling image:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        build_args={
            "HTTPS_PROXY": "https://127.0.0.1:3001"
        }
    )
)
```
Use the `bundling.dockerImage` prop to use a custom bundling image:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        docker_image=DockerImage.from_build("/path/to/Dockerfile")
    )
)
```
Use the `bundling.goBuildFlags` prop to pass additional build flags to `go build`:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        go_build_flags=["-ldflags \"-s -w\""]
    )
)
```
By default this construct doesn't use any Go module proxies. This is contrary to
a standard Go installation, which would use the Google proxy by default. To
recreate that behavior, do the following:
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        go_proxies=[go.GoFunction.GOOGLE_GOPROXY, "direct"]
    )
)
```
You can set additional Docker options to configure the build environment:
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        network="host",
        security_opt="no-new-privileges",
        user="user:group",
        volumes_from=["777f7dc92da7"],
        volumes=[DockerVolume(host_path="/host-path", container_path="/container-path")]
    )
)
```
## Command hooks
It is  possible to run additional commands by specifying the `commandHooks` prop:
```text
// This example only available in TypeScript
// Run additional commands on a GoFunction via `commandHooks` property
new go.GoFunction(this, 'handler', {
  bundling: {
    commandHooks: {
      // run tests
      beforeBundling(inputDir: string): string[] {
        return ['go test ./cmd/api -v'];
      },
      // ...
    },
  },
});
```
The following hooks are available:
* `beforeBundling`: runs before all bundling commands
* `afterBundling`: runs after all bundling commands
They all receive the directory containing the `go.mod` file (`inputDir`) and the
directory where the bundled asset will be output (`outputDir`). They must return
an array of commands to run. Commands are chained with `&&`.
The commands will run in the environment in which bundling occurs: inside the
container for Docker bundling or on the host OS for local bundling.
## Additional considerations
Depending on how you structure your Golang application, you may want to change the `assetHashType` parameter.
By default this parameter is set to `AssetHashType.OUTPUT` which means that the CDK will calculate the asset hash
(and determine whether or not your code has changed) based on the Golang executable that is created.
If you specify `AssetHashType.SOURCE`, the CDK will calculate the asset hash by looking at the folder
that contains your `go.mod` file. If you are deploying a single Lambda function, or you want to redeploy
all of your functions if anything changes, then `AssetHashType.SOURCE` will probably work.
For example, if my app looked like this:
```bash
lamda-app
├── cmd
│   └── api
│       └── main.go
├── go.mod
├── go.sum
└── pkg
    └── auth
        └── auth.go
```
With this structure I would provide the `entry` as `cmd/api` which means that the CDK
will determine that the protect root is `lambda-app` (it contains the `go.mod` file).
Since I only have a single Lambda function, and any update to files within the `lambda-app` directory
should trigger a new deploy, I could specify `AssetHashType.SOURCE`.
On the other hand, if I had a project that deployed multiple Lambda functions, for example:
```bash
lamda-app
├── cmd
│   ├── api
│   │   └── main.go
│   └── anotherApi
│       └── main.go
├── go.mod
├── go.sum
└── pkg
    ├── auth
    │   └── auth.go
    └── middleware
        └── middleware.go
```
Then I would most likely want `AssetHashType.OUTPUT`. With `OUTPUT`
the CDK will only recognize changes if the Golang executable has changed,
and Go only includes dependencies that are used in the executable. So in this case
if `cmd/api` used the `auth` & `middleware` packages, but `cmd/anotherApi` did not, then
an update to `auth` or `middleware` would only trigger an update to the `cmd/api` Lambda
Function.
## Docker based bundling in complex Docker configurations
By default the input and output of Docker based bundling is handled via bind mounts.
In situtations where this does not work, like Docker-in-Docker setups or when using a remote Docker socket, you can configure an alternative, but slower, variant that also works in these situations.
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        bundling_file_access=BundlingFileAccess.VOLUME_COPY
    )
)
```

%package -n python3-aws-cdk.aws-lambda-go-alpha
Summary:	The CDK Construct Library for AWS Lambda in Golang
Provides:	python-aws-cdk.aws-lambda-go-alpha
BuildRequires:	python3-devel
BuildRequires:	python3-setuptools
BuildRequires:	python3-pip
%description -n python3-aws-cdk.aws-lambda-go-alpha
<!--END STABILITY BANNER-->
This library provides constructs for Golang Lambda functions.
To use this module you will either need to have `Go` installed (`go1.11` or later) or `Docker` installed.
See [Local Bundling](#local-bundling)/[Docker Bundling](#docker-bundling) for more information.
This module also requires that your Golang application is
using a Go version >= 1.11 and is using [Go modules](https://golang.org/ref/mod).
## Go Function
Define a `GoFunction`:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api"
)
```
By default, if `entry` points to a directory, then the construct will assume there is a Go entry file (i.e. `main.go`).
Let's look at an example Go project:
```bash
lamda-app
├── cmd
│   └── api
│       └── main.go
├── go.mod
├── go.sum
├── pkg
│   ├── auth
│   │   └── auth.go
│   └── middleware
│       └── middleware.go
└── vendor
    ├── github.com
    │   └── aws
    │       └── aws-lambda-go
    └── modules.txt
```
With the above layout I could either provide the `entry` as `lambda-app/cmd/api` or `lambda-app/cmd/api/main.go`, either will work.
When the construct builds the golang binary this will be translated `go build ./cmd/api` & `go build ./cmd/api/main.go` respectively.
The construct will figure out where it needs to run the `go build` command from, in this example it would be from
the `lambda-app` directory. It does this by determining the [mod file path](#mod-file-path), which is explained in the
next section.
### mod file path
The `GoFunction` tries to automatically determine your project root, that is
the root of your golang project. This is usually where the top level `go.mod` file or
`vendor` folder of your project is located. When bundling in a Docker container, the
`moduleDir` is used as the source (`/asset-input`) for the volume mounted in
the container.
The CDK will walk up parent folders starting from
the current working directory until it finds a folder containing a `go.mod` file.
Alternatively, you can specify the `moduleDir` prop manually. In this case you
need to ensure that this path includes `entry` and any module/dependencies used
by your function. Otherwise bundling will fail.
## Runtime
The `GoFunction` can be used with either the `GO_1_X` runtime or the provided runtimes (`PROVIDED`/`PROVIDED_AL2`).
By default it will use the `PROVIDED_AL2` runtime. The `GO_1_X` runtime does not support things like
[Lambda Extensions](https://docs.aws.amazon.com/lambda/latest/dg/using-extensions.html), whereas the provided runtimes do.
The [aws-lambda-go](https://github.com/aws/aws-lambda-go) library has built in support for the provided runtime as long as
you name the handler `bootstrap` (which we do by default).
## Dependencies
The construct will attempt to figure out how to handle the dependencies for your function. It will
do this by determining whether or not you are vendoring your dependencies. It makes this determination
by looking to see if there is a `vendor` folder at the [mod file path](#mod-file-path).
With this information the construct can determine what commands to run. You will
generally fall into two scenarios:
1. You are using vendoring (indicated by the presence of a `vendor` folder)
   In this case `go build` will be run with `-mod=vendor` set
2. You are not using vendoring (indicated by the absence of a `vendor` folder)
   If you are not vendoring then `go build` will be run without `-mod=vendor`
   since the default behavior is to download dependencies
All other properties of `lambda.Function` are supported, see also the [AWS Lambda construct library](https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/aws-lambda).
## Environment
By default the following environment variables are set for you:
* `GOOS=linux`
* `GOARCH`: based on the target architecture of the Lambda function
* `GO111MODULE=on`
Use the `environment` prop to define additional environment variables when go runs:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        environment={
            "HELLO": "WORLD"
        }
    )
)
```
## Local Bundling
If `Go` is installed locally and the version is >= `go1.11` then it will be used to bundle your code in your environment. Otherwise, bundling will happen in a [Lambda compatible Docker container](https://gallery.ecr.aws/sam/build-go1.x) with the Docker platform based on the target architecture of the Lambda function.
For macOS the recommended approach is to install `Go` as Docker volume performance is really poor.
`Go` can be installed by following the [installation docs](https://golang.org/doc/install).
## Docker
To force bundling in a docker container even if `Go` is available in your environment, set the `forceDockerBundling` prop to `true`. This is useful if you want to make sure that your function is built in a consistent Lambda compatible environment.
Use the `buildArgs` prop to pass build arguments when building the bundling image:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        build_args={
            "HTTPS_PROXY": "https://127.0.0.1:3001"
        }
    )
)
```
Use the `bundling.dockerImage` prop to use a custom bundling image:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        docker_image=DockerImage.from_build("/path/to/Dockerfile")
    )
)
```
Use the `bundling.goBuildFlags` prop to pass additional build flags to `go build`:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        go_build_flags=["-ldflags \"-s -w\""]
    )
)
```
By default this construct doesn't use any Go module proxies. This is contrary to
a standard Go installation, which would use the Google proxy by default. To
recreate that behavior, do the following:
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        go_proxies=[go.GoFunction.GOOGLE_GOPROXY, "direct"]
    )
)
```
You can set additional Docker options to configure the build environment:
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        network="host",
        security_opt="no-new-privileges",
        user="user:group",
        volumes_from=["777f7dc92da7"],
        volumes=[DockerVolume(host_path="/host-path", container_path="/container-path")]
    )
)
```
## Command hooks
It is  possible to run additional commands by specifying the `commandHooks` prop:
```text
// This example only available in TypeScript
// Run additional commands on a GoFunction via `commandHooks` property
new go.GoFunction(this, 'handler', {
  bundling: {
    commandHooks: {
      // run tests
      beforeBundling(inputDir: string): string[] {
        return ['go test ./cmd/api -v'];
      },
      // ...
    },
  },
});
```
The following hooks are available:
* `beforeBundling`: runs before all bundling commands
* `afterBundling`: runs after all bundling commands
They all receive the directory containing the `go.mod` file (`inputDir`) and the
directory where the bundled asset will be output (`outputDir`). They must return
an array of commands to run. Commands are chained with `&&`.
The commands will run in the environment in which bundling occurs: inside the
container for Docker bundling or on the host OS for local bundling.
## Additional considerations
Depending on how you structure your Golang application, you may want to change the `assetHashType` parameter.
By default this parameter is set to `AssetHashType.OUTPUT` which means that the CDK will calculate the asset hash
(and determine whether or not your code has changed) based on the Golang executable that is created.
If you specify `AssetHashType.SOURCE`, the CDK will calculate the asset hash by looking at the folder
that contains your `go.mod` file. If you are deploying a single Lambda function, or you want to redeploy
all of your functions if anything changes, then `AssetHashType.SOURCE` will probably work.
For example, if my app looked like this:
```bash
lamda-app
├── cmd
│   └── api
│       └── main.go
├── go.mod
├── go.sum
└── pkg
    └── auth
        └── auth.go
```
With this structure I would provide the `entry` as `cmd/api` which means that the CDK
will determine that the protect root is `lambda-app` (it contains the `go.mod` file).
Since I only have a single Lambda function, and any update to files within the `lambda-app` directory
should trigger a new deploy, I could specify `AssetHashType.SOURCE`.
On the other hand, if I had a project that deployed multiple Lambda functions, for example:
```bash
lamda-app
├── cmd
│   ├── api
│   │   └── main.go
│   └── anotherApi
│       └── main.go
├── go.mod
├── go.sum
└── pkg
    ├── auth
    │   └── auth.go
    └── middleware
        └── middleware.go
```
Then I would most likely want `AssetHashType.OUTPUT`. With `OUTPUT`
the CDK will only recognize changes if the Golang executable has changed,
and Go only includes dependencies that are used in the executable. So in this case
if `cmd/api` used the `auth` & `middleware` packages, but `cmd/anotherApi` did not, then
an update to `auth` or `middleware` would only trigger an update to the `cmd/api` Lambda
Function.
## Docker based bundling in complex Docker configurations
By default the input and output of Docker based bundling is handled via bind mounts.
In situtations where this does not work, like Docker-in-Docker setups or when using a remote Docker socket, you can configure an alternative, but slower, variant that also works in these situations.
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        bundling_file_access=BundlingFileAccess.VOLUME_COPY
    )
)
```

%package help
Summary:	Development documents and examples for aws-cdk.aws-lambda-go-alpha
Provides:	python3-aws-cdk.aws-lambda-go-alpha-doc
%description help
<!--END STABILITY BANNER-->
This library provides constructs for Golang Lambda functions.
To use this module you will either need to have `Go` installed (`go1.11` or later) or `Docker` installed.
See [Local Bundling](#local-bundling)/[Docker Bundling](#docker-bundling) for more information.
This module also requires that your Golang application is
using a Go version >= 1.11 and is using [Go modules](https://golang.org/ref/mod).
## Go Function
Define a `GoFunction`:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api"
)
```
By default, if `entry` points to a directory, then the construct will assume there is a Go entry file (i.e. `main.go`).
Let's look at an example Go project:
```bash
lamda-app
├── cmd
│   └── api
│       └── main.go
├── go.mod
├── go.sum
├── pkg
│   ├── auth
│   │   └── auth.go
│   └── middleware
│       └── middleware.go
└── vendor
    ├── github.com
    │   └── aws
    │       └── aws-lambda-go
    └── modules.txt
```
With the above layout I could either provide the `entry` as `lambda-app/cmd/api` or `lambda-app/cmd/api/main.go`, either will work.
When the construct builds the golang binary this will be translated `go build ./cmd/api` & `go build ./cmd/api/main.go` respectively.
The construct will figure out where it needs to run the `go build` command from, in this example it would be from
the `lambda-app` directory. It does this by determining the [mod file path](#mod-file-path), which is explained in the
next section.
### mod file path
The `GoFunction` tries to automatically determine your project root, that is
the root of your golang project. This is usually where the top level `go.mod` file or
`vendor` folder of your project is located. When bundling in a Docker container, the
`moduleDir` is used as the source (`/asset-input`) for the volume mounted in
the container.
The CDK will walk up parent folders starting from
the current working directory until it finds a folder containing a `go.mod` file.
Alternatively, you can specify the `moduleDir` prop manually. In this case you
need to ensure that this path includes `entry` and any module/dependencies used
by your function. Otherwise bundling will fail.
## Runtime
The `GoFunction` can be used with either the `GO_1_X` runtime or the provided runtimes (`PROVIDED`/`PROVIDED_AL2`).
By default it will use the `PROVIDED_AL2` runtime. The `GO_1_X` runtime does not support things like
[Lambda Extensions](https://docs.aws.amazon.com/lambda/latest/dg/using-extensions.html), whereas the provided runtimes do.
The [aws-lambda-go](https://github.com/aws/aws-lambda-go) library has built in support for the provided runtime as long as
you name the handler `bootstrap` (which we do by default).
## Dependencies
The construct will attempt to figure out how to handle the dependencies for your function. It will
do this by determining whether or not you are vendoring your dependencies. It makes this determination
by looking to see if there is a `vendor` folder at the [mod file path](#mod-file-path).
With this information the construct can determine what commands to run. You will
generally fall into two scenarios:
1. You are using vendoring (indicated by the presence of a `vendor` folder)
   In this case `go build` will be run with `-mod=vendor` set
2. You are not using vendoring (indicated by the absence of a `vendor` folder)
   If you are not vendoring then `go build` will be run without `-mod=vendor`
   since the default behavior is to download dependencies
All other properties of `lambda.Function` are supported, see also the [AWS Lambda construct library](https://github.com/aws/aws-cdk/tree/main/packages/%40aws-cdk/aws-lambda).
## Environment
By default the following environment variables are set for you:
* `GOOS=linux`
* `GOARCH`: based on the target architecture of the Lambda function
* `GO111MODULE=on`
Use the `environment` prop to define additional environment variables when go runs:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        environment={
            "HELLO": "WORLD"
        }
    )
)
```
## Local Bundling
If `Go` is installed locally and the version is >= `go1.11` then it will be used to bundle your code in your environment. Otherwise, bundling will happen in a [Lambda compatible Docker container](https://gallery.ecr.aws/sam/build-go1.x) with the Docker platform based on the target architecture of the Lambda function.
For macOS the recommended approach is to install `Go` as Docker volume performance is really poor.
`Go` can be installed by following the [installation docs](https://golang.org/doc/install).
## Docker
To force bundling in a docker container even if `Go` is available in your environment, set the `forceDockerBundling` prop to `true`. This is useful if you want to make sure that your function is built in a consistent Lambda compatible environment.
Use the `buildArgs` prop to pass build arguments when building the bundling image:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        build_args={
            "HTTPS_PROXY": "https://127.0.0.1:3001"
        }
    )
)
```
Use the `bundling.dockerImage` prop to use a custom bundling image:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        docker_image=DockerImage.from_build("/path/to/Dockerfile")
    )
)
```
Use the `bundling.goBuildFlags` prop to pass additional build flags to `go build`:
```python
go.GoFunction(self, "handler",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        go_build_flags=["-ldflags \"-s -w\""]
    )
)
```
By default this construct doesn't use any Go module proxies. This is contrary to
a standard Go installation, which would use the Google proxy by default. To
recreate that behavior, do the following:
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        go_proxies=[go.GoFunction.GOOGLE_GOPROXY, "direct"]
    )
)
```
You can set additional Docker options to configure the build environment:
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        network="host",
        security_opt="no-new-privileges",
        user="user:group",
        volumes_from=["777f7dc92da7"],
        volumes=[DockerVolume(host_path="/host-path", container_path="/container-path")]
    )
)
```
## Command hooks
It is  possible to run additional commands by specifying the `commandHooks` prop:
```text
// This example only available in TypeScript
// Run additional commands on a GoFunction via `commandHooks` property
new go.GoFunction(this, 'handler', {
  bundling: {
    commandHooks: {
      // run tests
      beforeBundling(inputDir: string): string[] {
        return ['go test ./cmd/api -v'];
      },
      // ...
    },
  },
});
```
The following hooks are available:
* `beforeBundling`: runs before all bundling commands
* `afterBundling`: runs after all bundling commands
They all receive the directory containing the `go.mod` file (`inputDir`) and the
directory where the bundled asset will be output (`outputDir`). They must return
an array of commands to run. Commands are chained with `&&`.
The commands will run in the environment in which bundling occurs: inside the
container for Docker bundling or on the host OS for local bundling.
## Additional considerations
Depending on how you structure your Golang application, you may want to change the `assetHashType` parameter.
By default this parameter is set to `AssetHashType.OUTPUT` which means that the CDK will calculate the asset hash
(and determine whether or not your code has changed) based on the Golang executable that is created.
If you specify `AssetHashType.SOURCE`, the CDK will calculate the asset hash by looking at the folder
that contains your `go.mod` file. If you are deploying a single Lambda function, or you want to redeploy
all of your functions if anything changes, then `AssetHashType.SOURCE` will probably work.
For example, if my app looked like this:
```bash
lamda-app
├── cmd
│   └── api
│       └── main.go
├── go.mod
├── go.sum
└── pkg
    └── auth
        └── auth.go
```
With this structure I would provide the `entry` as `cmd/api` which means that the CDK
will determine that the protect root is `lambda-app` (it contains the `go.mod` file).
Since I only have a single Lambda function, and any update to files within the `lambda-app` directory
should trigger a new deploy, I could specify `AssetHashType.SOURCE`.
On the other hand, if I had a project that deployed multiple Lambda functions, for example:
```bash
lamda-app
├── cmd
│   ├── api
│   │   └── main.go
│   └── anotherApi
│       └── main.go
├── go.mod
├── go.sum
└── pkg
    ├── auth
    │   └── auth.go
    └── middleware
        └── middleware.go
```
Then I would most likely want `AssetHashType.OUTPUT`. With `OUTPUT`
the CDK will only recognize changes if the Golang executable has changed,
and Go only includes dependencies that are used in the executable. So in this case
if `cmd/api` used the `auth` & `middleware` packages, but `cmd/anotherApi` did not, then
an update to `auth` or `middleware` would only trigger an update to the `cmd/api` Lambda
Function.
## Docker based bundling in complex Docker configurations
By default the input and output of Docker based bundling is handled via bind mounts.
In situtations where this does not work, like Docker-in-Docker setups or when using a remote Docker socket, you can configure an alternative, but slower, variant that also works in these situations.
```python
go.GoFunction(self, "GoFunction",
    entry="app/cmd/api",
    bundling=go.BundlingOptions(
        bundling_file_access=BundlingFileAccess.VOLUME_COPY
    )
)
```

%prep
%autosetup -n aws-cdk.aws-lambda-go-alpha-2.81.0a0

%build
%py3_build

%install
%py3_install
install -d -m755 %{buildroot}/%{_pkgdocdir}
if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
if [ -d examples ]; then cp -arf examples %{buildroot}/%{_pkgdocdir}; fi
pushd %{buildroot}
if [ -d usr/lib ]; then
	find usr/lib -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/lib64 ]; then
	find usr/lib64 -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/bin ]; then
	find usr/bin -type f -printf "/%h/%f\n" >> filelist.lst
fi
if [ -d usr/sbin ]; then
	find usr/sbin -type f -printf "/%h/%f\n" >> filelist.lst
fi
touch doclist.lst
if [ -d usr/share/man ]; then
	find usr/share/man -type f -printf "/%h/%f.gz\n" >> doclist.lst
fi
popd
mv %{buildroot}/filelist.lst .
mv %{buildroot}/doclist.lst .

%files -n python3-aws-cdk.aws-lambda-go-alpha -f filelist.lst
%dir %{python3_sitelib}/*

%files help -f doclist.lst
%{_docdir}/*

%changelog
* Wed May 31 2023 Python_Bot <Python_Bot@openeuler.org> - 2.81.0a0-1
- Package Spec generated