pulumi/tests/integration/config_basic/python/__main__.py
Justin Van Patten c08714ffb4
Support lists and maps in config (#3342)
This change adds support for lists and maps in config. We now allow
lists/maps (and nested structures) in `Pulumi.<stack>.yaml` (or
`Pulumi.<stack>.json`; yes, we currently support that).

For example:

```yaml
config:
  proj:blah:
  - a
  - b
  - c
  proj:hello: world
  proj:outer:
    inner: value
  proj:servers:
  - port: 80
```

While such structures could be specified in the `.yaml` file manually,
we support setting values in maps/lists from the command line.

As always, you can specify single values with:

```shell
$ pulumi config set hello world
```

Which results in the following YAML:

```yaml
proj:hello world
```

And single value secrets via:

```shell
$ pulumi config set --secret token shhh
```

Which results in the following YAML:

```yaml
proj:token:
  secure: v1:VZAhuroR69FkEPTk:isKafsoZVMWA9pQayGzbWNynww==
```

Values in a list can be set from the command line using the new
`--path` flag, which indicates the config key contains a path to a
property in a map or list:

```shell
$ pulumi config set --path names[0] a
$ pulumi config set --path names[1] b
$ pulumi config set --path names[2] c
```

Which results in:

```yaml
proj:names
- a
- b
- c
```

Values can be obtained similarly:

```shell
$ pulumi config get --path names[1]
b
```

Or setting values in a map:

```shell
$ pulumi config set --path outer.inner value
```

Which results in:

```yaml
proj:outer:
  inner: value
```

Of course, setting values in nested structures is supported:

```shell
$ pulumi config set --path servers[0].port 80
```

Which results in:

```yaml
proj:servers:
- port: 80
```

If you want to include a period in the name of a property, it can be
specified as:

```
$ pulumi config set --path 'nested["foo.bar"]' baz
```

Which results in:

```yaml
proj:nested:
  foo.bar: baz
```

Examples of valid paths:

- root
- root.nested
- 'root["nested"]'
- root.double.nest
- 'root["double"].nest'
- 'root["double"]["nest"]'
- root.array[0]
- root.array[100]
- root.array[0].nested
- root.array[0][1].nested
- root.nested.array[0].double[1]
- 'root["key with \"escaped\" quotes"]'
- 'root["key with a ."]'
- '["root key with \"escaped\" quotes"].nested'
- '["root key with a ."][100]'

Note: paths that contain quotes can be surrounded by single quotes.

When setting values with `--path`, if the value is `"false"` or
`"true"`, it will be saved as the boolean value, and if it is
convertible to an integer, it will be saved as an integer.

Secure values are supported in lists/maps as well:

```shell
$ pulumi config set --path --secret tokens[0] shh
```

Will result in:

```yaml
proj:tokens:
- secure: v1:wpZRCe36sFg1RxwG:WzPeQrCn4n+m4Ks8ps15MxvFXg==
```

Note: maps of length 1 with a key of “secure” and string value are
reserved for storing secret values. Attempting to create such a value
manually will result in an error:

```shell
$ pulumi config set --path parent.secure foo
error: "secure" key in maps of length 1 are reserved
```

**Accessing config values from the command line with JSON**

```shell
$ pulumi config --json
```

Will output:

```json
{
  "proj:hello": {
    "value": "world",
    "secret": false,
    "object": false
  },
  "proj:names": {
    "value": "[\"a\",\"b\",\"c\"]",
    "secret": false,
    "object": true,
    "objectValue": [
      "a",
      "b",
      "c"
    ]
  },
  "proj:nested": {
    "value": "{\"foo.bar\":\"baz\"}",
    "secret": false,
    "object": true,
    "objectValue": {
      "foo.bar": "baz"
    }
  },
  "proj:outer": {
    "value": "{\"inner\":\"value\"}",
    "secret": false,
    "object": true,
    "objectValue": {
      "inner": "value"
    }
  },
  "proj:servers": {
    "value": "[{\"port\":80}]",
    "secret": false,
    "object": true,
    "objectValue": [
      {
        "port": 80
      }
    ]
  },
  "proj:token": {
    "secret": true,
    "object": false
  },
  "proj:tokens": {
    "secret": true,
    "object": true
  }
}
```

If the value is a map or list, `"object"` will be `true`. `"value"` will
contain the object as serialized JSON and a new `"objectValue"` property
will be available containing the value of the object.

If the object contains any secret values, `"secret"` will be `true`, and
just like with scalar values, the value will not be outputted unless
`--show-secrets` is specified.

**Accessing config values from Pulumi programs**

Map/list values are available to Pulumi programs as serialized JSON, so
the existing
`getObject`/`requireObject`/`getSecretObject`/`requireSecretObject`
functions can be used to retrieve such values, e.g.:

```typescript
import * as pulumi from "@pulumi/pulumi";

interface Server {
    port: number;
}

const config = new pulumi.Config();

const names = config.requireObject<string[]>("names");
for (const n of names) {
    console.log(n);
}

const servers = config.requireObject<Server[]>("servers");
for (const s of servers) {
    console.log(s.port);
}
```
2019-11-01 13:41:27 -07:00

54 lines
1.5 KiB
Python

# Copyright 2016-2018, Pulumi Corporation. All rights reserved.
import pulumi
# Just test that basic config works.
config = pulumi.Config('config_basic_py')
# This value is plaintext and doesn't require encryption.
value = config.require('aConfigValue')
assert value == 'this value is a Pythonic value'
# This value is a secret and is encrypted using the passphrase `supersecret`.
secret = config.require('bEncryptedSecret')
assert secret == 'this super Pythonic secret is encrypted'
test_data = [
{
'key': 'outer',
'expected_json': '{"inner":"value"}',
'expected_object': { 'inner': 'value' }
},
{
'key': 'names',
'expected_json': '["a","b","c","super secret name"]',
'expected_object': ['a', 'b', 'c', 'super secret name']
},
{
'key': 'servers',
'expected_json': '[{"host":"example","port":80}]',
'expected_object': [{ 'host': 'example', 'port': 80 }]
},
{
'key': 'a',
'expected_json': '{"b":[{"c":true},{"c":false}]}',
'expected_object': { 'b': [{ 'c': True }, { 'c': False }] }
},
{
'key': 'tokens',
'expected_json': '["shh"]',
'expected_object': ['shh']
},
{
'key': 'foo',
'expected_json': '{"bar":"don\'t tell"}',
'expected_object': { 'bar': "don't tell" }
}
]
for test in test_data:
json = config.require(test['key'])
obj = config.require_object(test['key'])
assert json == test['expected_json']
assert obj == test['expected_object']