Commit Graph

75 Commits

Author SHA1 Message Date
Jesse Szwedko 0fbd72a355 Add some basic math interpolation functions
Support the following math functions for interpolation:

* ceil
* floor
* max
* min

Fixes #7409
2016-10-28 17:49:31 +00:00
James Nugent 47bce79b29 core: Add zipmap interpolation function
This commit adds a new interpolation function, zipmap, which produces a
map given a list of string keys and a list of values of the same length
as the list of keys.

The name comes from the same operation in Clojure (and likely other
functional langauges).
2016-10-26 11:28:36 -05:00
Gustavo 5910e3b8af Adds ‘tittle’ built-in function. (#9087)
The tittle function returns a copy of the string with the first characters of all the words capitalized.
2016-10-26 13:21:32 +01:00
James Bardin 39bbbb8da6 Add merge interpolation function
Add a `merge` interpolation function, which merges any number of maps.
Duplicate keys are OK, with the last write winning.
2016-08-01 18:30:58 -04:00
James Bardin c9e1522103 Use HIL to limit concat to ast.TypeList
we can remove some type checks in the concat function
2016-08-01 15:24:18 -04:00
James Bardin c15c0eb0cb Disallow strings as arguments to concat
The concat interpolation function now only accepts list arguments.
Strings are no longer supported, for concatenation or appending to
lists. All arguments must be a list, and single elements can be promoted
with the `list` interpolation function.
2016-08-01 15:06:20 -04:00
Paul Hinze 88030764ff
config: Audit all interpolation functions for list/map behavior
- `distinct()` - error on non-flat lists
 - `element()` - error on non-flat lists
 - `join()` - error on non-flat lists
 - `length()` - support maps
 - `lookup()` - error on non-flat maps
 - `values()` - error on non-flat maps
2016-07-28 09:56:30 -05:00
Paul Hinze 1425b34562
config: Add map() interpolation function
* `map(key, value, ...)` - Returns a map consisting of the key/value pairs
  specified as arguments. Every odd argument must be a string key, and every
  even argument must have the same type as the other values specified.
  Duplicate keys are not allowed. Examples:
  * `map("hello", "world")`
  * `map("us-east", list("a", "b", "c"), "us-west", list("b", "c", "d"))`
2016-07-27 13:03:08 -05:00
James Bardin 8dcbc0b0a0 Add concat to accept lists of lists and maps
This will allow the concat interpolation function to accept lists of
lists, and lists of maps as well as strings. We still allow bare strings
for backwards compatibility, but remove some of the old comment wording
as it could cause confusion of this function with actual string
concatenation.

Since maps are now supported in the config, this removes the superfluous
(and failing) TestInterpolationFuncConcatListOfMaps.
2016-07-19 17:45:50 -04:00
James Bardin 2bd7cfd5fe Expand list interpolation to lists and maps
Allow lists and maps within the list interpolation function via variable
interpolation. Since this requires setting the variadic type to TypeAny,
we check for non-heterogeneous lists in the callback.
2016-07-19 13:44:37 -04:00
James Nugent 58dd41f3b1 core: Add list() interpolation function
The list() interpolation function provides a way to add support for list
literals (of strings) to HIL without having to invent new syntax for it
and modify the HIL parser.

It presents as a function, thus:

    - list() -> []
    - list("a") -> ["a"]
    - list("a", "b") -> ["a", "b"]

Thanks to @wr0ngway for the idea of this approach, fixes #7460.
2016-07-18 18:12:11 -04:00
James Nugent 8403a465bc core: Add test and fix for element with empty list
The incldued test previously caused a panic, it now returns an error
message explaining the issue.
2016-06-23 21:15:33 +01:00
James Nugent 4b6a632246 core: Rename uniq -> distinct and add docs 2016-06-15 13:25:17 +02:00
Jan Schumann df3e017f6c fix #7106 2016-06-15 13:25:16 +02:00
Paul Hinze 9bc980f569
core: Fix panic on concat() w/ list of nonprimitives
The `concat()` interpolation function does not yet support types other
than strings / lists of strings. Make it an error message instead of a
panic when a list of non-primitives is supplied.

Fixes the panic in #7030
2016-06-12 13:29:06 -05:00
James Nugent 578ff9569e core: Add sort() interpolation function 2016-06-11 18:03:52 +01:00
David Adams b5d1279107 Allow specifying a default value to lookup()
Fixes #4474, where lookup() calls fail out the entire interpolation when
the provided key value is not found in the map. This will allow using
coalesce() along with lookup() to greatly improve module flexibility.
2016-05-25 19:25:15 -05:00
David Glasser 594ea105d8 config: support lists and maps in jsonencode
For now we only support lists and maps whose values are strings, not
deeply nested data.
2016-05-18 10:46:06 -07:00
James Nugent f49583d25a core: support native list variables in config
This commit adds support for native list variables and outputs, building
up on the previous change to state. Interpolation functions now return
native lists in preference to StringList.

List variables are defined like this:

variable "test" {
    # This can also be inferred
    type = "list"
    default = ["Hello", "World"]
}

output "test_out" {
    value = "${var.a_list}"
}
This results in the following state:

```
...
            "outputs": {
                "test_out": [
                    "hello",
                    "world"
                ]
            },
...
```

And the result of terraform output is as follows:

```
$ terraform output
test_out = [
  hello
  world
]
```

Using the output name, an xargs-friendly representation is output:

```
$ terraform output test_out
hello
world
```

The output command also supports indexing into the list (with
appropriate range checking and no wrapping):

```
$ terraform output test_out 1
world
```

Along with maps, list outputs from one module may be passed as variables
into another, removing the need for the `join(",", var.list_as_string)`
and `split(",", var.list_as_string)` which was previously necessary in
Terraform configuration.

This commit also updates the tests and implementations of built-in
interpolation functions to take and return native lists where
appropriate.

A backwards compatibility note: previously the concat interpolation
function was capable of concatenating either strings or lists. The
strings use case was deprectated a long time ago but still remained.
Because we cannot return `ast.TypeAny` from an interpolation function,
this use case is no longer supported for strings - `concat` is only
capable of concatenating lists. This should not be a huge issue - the
type checker picks up incorrect parameters, and the native HIL string
concatenation - or the `join` function - can be used to replicate the
missing behaviour.
2016-05-10 14:49:14 -04:00
James Nugent e57a399d71 core: Use native HIL maps instead of flatmaps
This changes the representation of maps in the interpolator from the
dotted flatmap form of a string variable named "var.variablename.key"
per map element to use native HIL maps instead.

This involves porting some of the interpolation functions in order to
keep the tests green, and adding support for map outputs.

There is one backwards incompatibility: as a result of an implementation
detail of maps, one could access an indexed map variable using the
syntax "${var.variablename.key}".

This is no longer possible - instead HIL native syntax -
"${var.variablename["key"]}" must be used. This was previously
documented, (though not heavily used) so it must be noted as a backward
compatibility issue for Terraform 0.7.
2016-05-10 14:49:13 -04:00
David Glasser 6cf06bb3ab config: new interpolation function jsonencode 2016-03-29 07:38:58 -07:00
Paul Hinze 293c6ca68c Revert "Revert "core: Add uuid() interpolate function.""
This reverts commit 661be01d9b.
2016-03-21 15:14:30 -05:00
James Nugent 87550b2b72 Merge pull request #5263 from uber/b-element-negative
Error out on negative indices in element()
2016-03-16 09:39:35 +00:00
Paul Hinze 661be01d9b Revert "core: Add uuid() interpolate function." 2016-03-15 18:39:34 -05:00
Paul Hinze 1e0b8ea478 core: Add uuid() interpolate function.
Utilizes hashicorp's go-uuid library for proper random seeding setup.
2016-03-10 18:39:07 -06:00
Radek Simko 664ba5f5a6 config: Add new interpolation function - md5 2016-02-24 13:01:05 +00:00
Radek Simko 573d3bd7ab config: Sort functions mapping alphabetically 2016-02-24 13:01:05 +00:00
Bill Fumerola c0034e672b Error out on negative indices in element() 2016-02-22 15:58:47 -08:00
Radek Simko 4edf782260 Merge pull request #4854 from jfromaniello/add_signum_interpolation
Add signum interpolation function
2016-02-07 19:44:16 +00:00
Mitchell Hashimoto 5f3de02fa9 remove config/lang, use hashicorp/hil 2016-02-03 13:24:04 -05:00
Radek Simko ecedcd0032 config: Add base64sha256() function 2016-01-30 13:19:10 +01:00
Colin Hebert d92d205dd9 rename trim to trimspace 2016-01-30 20:51:28 +11:00
Colin Hebert d45b7b2ddc Fix name from strip to trim 2016-01-30 10:32:18 +11:00
Colin Hebert f5074cd521 Add the trim() interpolation function 2016-01-30 10:28:04 +11:00
José F. Romaniello c8795b8565 Add signum interpolation function
This function returns -1 for negative numbers, 0 for 0 and 1 for positive numbers.

Useful when you need to set a value for the first resource and a different value for the rest of the resources.

Example: `${element(split(",", var.r53_failover_policy), signum(count.index))}`
2016-01-27 12:49:52 -03:00
Matt Moyer c17a6ceb2a Add a sha256(...) interpolation function. 2016-01-16 23:54:04 +00:00
Paul Hinze 0739cf2348 provider/template: fix race causing panic in template_file
The render code path in `template_file` was doing unsynchronized access
to a shared mapping of functions in `config.Func`.

This caused a race condition that was most often triggered when a
`template_file` had a `count` of more than one, and expressed itself as
a panic in the plugin followed by a cascade of "unexpected EOF" errors
through the plugin system.

Here, we simply turn the FuncMap from shared state into a generated
value, which avoids the race. We do more re-initialization of the data
structure, but the performance implications are minimal, and we can
always revisit with a perf pass later now that the race is fixed.
2016-01-15 16:34:46 -05:00
Joseph Kordish e1b62c76ad add sha1 interpolation 2016-01-06 15:10:43 -06:00
Matt Morrison 6ecec7fe83 Add coalesce func 2015-11-08 19:34:56 +13:00
Martin Atkins ef161e1c1b Various interpolation functions for CIDR range manipulation.
These new functions allow Terraform to be used for network address space
planning tasks, and make it easier to produce reusable modules that
contain or depend on network infrastructure.

For example:
- cidrsubnet allows an aws_subnet to derive its
  CIDR prefix from its parent aws_vpc.
- cidrhost allows a fixed IP address for a resource to be assigned within
  an address range defined elsewhere.
- cidrnetmask provides the dotted-decimal form of a prefix length that is
  accepted by some systems such as routing tables and static network
  interface configuration files.

The bulk of the work here is done by an external library I authored called
go-cidr. It is MIT licensed and was implemented primarily for the purpose
of using it within Terraform. It has its own unit tests and so the unit
tests within this change focus on simple success cases and on the correct
handling of the various error cases.
2015-10-22 08:10:52 -07:00
Matt Morrison cccc5d03e3 Add lower / upper interpolation functions 2015-10-21 08:16:24 -07:00
Martin Atkins 16b11e443d go fmt the "compact" function changes. 2015-10-10 15:17:25 -07:00
Anthony Stanton aed3f98703 Rename func which is now a method. 2015-10-08 10:01:21 +02:00
Anthony Stanton ef2b0a0b71 Order functions alphabetically 2015-10-08 10:01:21 +02:00
Anthony Stanton 7610874264 Initial implementation of compact() interpolation function 2015-10-08 10:00:32 +02:00
Martin Atkins 0b85d35e87 Rename base64enc/dec to encode/decode.
There isn't any precedent for abbreviating words in the interpolation
function names, and it may not be clear to all users what "enc" and "dec"
are short for, so instead we'll prefer to spell out the whole words for
improved readability.
2015-10-03 15:12:51 -07:00
Gorka Lerchundi Osa 70522fb770 implements base64{enc,dec} interpolation funcs
fixes #3320

Signed-off-by: Gorka Lerchundi Osa <glertxundi@gmail.com>
2015-09-25 09:23:36 +02:00
Jason Gedge cf5926ddad Add a function to find the index of an element in a list. 2015-07-13 14:11:30 -04:00
Paul Hinze c95f21cec1 config: make formatlist work on lists of length 1
removes treat-lists-as-scalar special casing for formatlist

/cc @radeksimko

fixes #2240
2015-06-25 18:55:28 -05:00
Paul Hinze e88aeede9b core: allow distinguishing between empty lists and strings
Had to handle a lot of implicit leaning on a few properties of the old
representation:

 * Old representation allowed plain strings to be treated as lists
   without problem (i.e. shoved into strings.Split), now strings need to
   be checked whether they are a list before they are treated as one
   (i.e. shoved into StringList(s).Slice()).
 * Tested behavior of 0 and 1 length lists in formatlist() was a side
   effect of the representation. Needs to be special cased now to
   maintain the behavior.
 * Found a pretty old context test failure that was wrong in several
   different ways. It's covered by TestContext2Apply_multiVar so I
   removed it.
2015-06-25 18:53:35 -05:00