Commit graph

99 commits

Author SHA1 Message Date
CyrusNajmabadi 4b761f9fc1
Include richer information in events so that final display can flexibly chose how to present it. (#1088) 2018-03-31 12:08:48 -07:00
Pat Gavlin 713a38dcb6
Merge pull request #1083 from pulumi/GetStack
Remove some calls to `...repo/project/stacks`.
2018-03-28 15:48:33 -07:00
Pat Gavlin 7fb48b7658 Fix the local implementation of GetStack. 2018-03-28 15:22:13 -07:00
joeduffy 8b5874dab5 General prep work for refresh
This change includes a bunch of refactorings I made in prep for
doing refresh (first, the command, see pulumi/pulumi#1081):

* The primary change is to change the way the engine's core update
  functionality works with respect to deploy.Source.  This is the
  way we can plug in new sources of resource information during
  planning (and, soon, diffing).  The way I intend to model refresh
  is by having a new kind of source, deploy.RefreshSource, which
  will let us do virtually everything about an update/diff the same
  way with refreshes, which avoid otherwise duplicative effort.

  This includes changing the planOptions (nee deployOptions) to
  take a new SourceFunc callback, which is responsible for creating
  a source specific to the kind of plan being requested.

  Preview, Update, and Destroy now are primarily differentiated by
  the kind of deploy.Source that they return, rather than sprinkling
  things like `if Destroying` throughout.  This tidies up some logic
  and, more importantly, gives us precisely the refresh hook we need.

* Originally, we used the deploy.NullSource for Destroy operations.
  This simply returns nothing, which is how Destroy works.  For some
  reason, we were no longer doing this, and instead had some
  `if Destroying` cases sprinkled throughout the deploy.EvalSource.
  I think this is a vestige of some old way we did configuration, at
  least judging by a comment, which is apparently no longer relevant.

* Move diff and diff-printing logic within the engine into its own
  pkg/engine/diff.go file, to prepare for upcoming work.

* I keep noticing benign diffs anytime I regenerate protobufs.  I
  suspect this is because we're also on different versions.  I changed
  generate.sh to also dump the version into grpc_version.txt.  At
  least we can understand where the diffs are coming from, decide
  whether to take them (i.e., a newer version), and ensure that as
  a team we are monotonically increasing, and not going backwards.

* I also tidied up some tiny things I noticed while in there, like
  comments, incorrect types, lint suppressions, and so on.
2018-03-28 07:45:23 -07:00
Pat Gavlin 75d75a41c0 Enable logs for managed stacks.
Simply fetch the checkpoint and use the local config to process logs.

Fixes #1078.
2018-03-27 14:29:10 -07:00
Pat Gavlin 58300f9ee7
Add support for service-managed stacks. (#1067)
These changes add the API types and cloud backend code necessary to
interact with service-managed stacks (i.e. stacks that do not have
PPC-managed deployments). The bulk of these changes are unremarkable:
the API types are straightforward, as are most of the interactions with
the new APIs. The trickiest bits are token and log management.

During an update to a managed stack, the CLI must continually renew the
token used to authorize the operations on that stack that comprise the
update. Once a token has been renewed, the old token should be
discarded. The CLI supports this by running a goroutine that is
responsible for both periodically renewing the token for an update and
servicing requests for the token itself from the rest of the backend.

In addition to token renewal, log output must be captured and uploaded
to the service during an update to a managed stack. Implementing this in
a reasonable fashion required a bit of refactoring in order to reuse
what already exists for the local backend. Each event-specific `Display`
function was replaced with an equivalent `Render` function that returns
a string rather than writing to a stream. This approach was chosen
primarily to avoid dealing with sheared colorization tags, which would
otherwise require clients to fuse log lines before colorizing. We could
take that approach in the future.
2018-03-22 10:42:43 -07:00
Pat Gavlin a23b10a9bf
Update the copyright end date to 2018. (#1068)
Just what it says on the tin.
2018-03-21 12:43:21 -07:00
Matt Ellis cd64462a9d Export display helper functions
This allows some upstack components that need to consume engine events
use the common display logic we have here.
2018-03-14 14:02:30 -07:00
Matt Ellis 936cab0c22 Add a version property to checkpoints
This takes the existing `apitype.Checkpoint` type and renames it to
`apitype.CheckpointV1` locking in the shape. In addition, we introduce
a `apitype.VersionedCheckpoint` type, which holds a version number and
a json document representing a checkpoint at that version. Now, when
reading a checkpoint, the CLI can determine if it's in a format it
understands, and fail gracefully if it is not.

While the CLI understands the older checkpoint version, it always
writes the newest version format, meaning that if you manage a
fire-and-forget stack with this version of the CLI, it will be
un-readable by previous versions.

Stacks managed by Pulumi.com are not impacted by this change.

Fixes: #887
2018-03-10 13:03:05 -08:00
Sean Gillespie 703a954839
Improve error messages output by the CLI (#1011)
* Improve error messages output by the CLI

This fixes a couple known issues with the way that we present errors
from the Pulumi CLI:
    1. Any errors from RPC endpoints were bubbling up as they were to
    the top-level, which was unfortunate because they contained
    RPC-specific noise that we don't want to present to the user. This
    commit unwraps errors from resource providers.
    2. The "catastrophic error" message often got printed twice
    3. Fatal errors are often printed twice, because our CLI top-level
    prints out the fatal error that it receives before exiting. A lot of
    the time this error has already been printed.
    4. Errors were prefixed by PU####.

* Feedback: Omit the 'catastrophic' error message and use a less verbose error message as the final error

* Code review feedback: interpretRPCError -> resourceStateAndError

* Code review feedback: deleting some commented-out code, error capitalization

* Cleanup after rebase
2018-03-09 15:43:16 -08:00
Matt Ellis 8c7ba437a4 Fix some small display issues
We were not colorizing a summary in one case. Also, there were
codepaths that would print to the console without first calling
spinner.Reset(), so the spinner would not be cleared from the screen.
2018-03-09 13:46:54 -08:00
Matt Ellis 225975ae2d Respond to some Pull Request feedback 2018-03-09 13:23:25 -08:00
Matt Ellis db079b1b0a Emit richer events for resource steps
The engine now emits events with richer metadata during the
ResourceOutputs and ResourcePre callbacks. The CLI can then use this
information to decide if it should display the event or not and how
much of the event to display.

Options dealing with what to display and how to display it have moved
into the CLI and the engine now emits all information for each event.
2018-03-09 13:11:42 -08:00
Matt Ellis 02c45f9f10 Move summary printing out of the engine
The engine now emits a special type of summary event, which the CLI
displays.
2018-03-09 11:13:06 -08:00
Matt Ellis 4e2f94df95 Remove UpdateOptions.ShowConfig
The engine now unconditionally emits a new type of event, a
PreludeEvent, which contains the configuration for a stack as well as
an indication if the stack is being previewed or updated. The
responsibility for interpreting the --show-config flag on the command
line is now handled by the CLI, which uses this to decide if it should
print the configuration or not, and then writes the "Previewing
changes" or "Deploying chanages" header.
2018-03-09 11:13:06 -08:00
Matt Ellis d58bc719c4
Merge pull request #995 from pulumi/fix-923
Eliminate the superfluous ":config" part of config keys
2018-03-09 10:14:51 -08:00
Joe Duffy 96d4cca4c8
Add deployment to UpdateInfo (#1013)
This change prepares to add optional full deployment checkpoints to
the UpdateInfo payloads returned by the service.
2018-03-08 13:56:59 -08:00
Matt Ellis 7c39620e9a Introduce config.Key
Right now, config.Key is a type alias for tokens.ModuleMember. I did a
pass over the codebase such that we use config.Key everywhere it
looked like the value did not leak to some external process (e.g a
resource provider or a langhost).

Doing this makes it a little clearer (hopefully) where code is
depending on a module member structure (e.g. <package>:config:<value>)
instead of just an opaque type.
2018-03-08 10:52:25 -08:00
Joe Duffy caceeea290
Reintroduce untyped deployments (#996)
By using untyped deployment structures via `json.RawMessage`, we can
support round-tripping between old CLI clients and newer servers, without
dropping possibly-important information on the floor.  I hadn't realized
this design goal with the original system, and after talking to @pgavlin,
I better realized the intent and that we want to preserve this.
2018-03-03 12:12:54 -08:00
Matt Ellis 96d7f9307a
Merge pull request #986 from pulumi/config-refactor
Rework config storage
2018-03-02 13:46:49 -08:00
Matt Ellis cdcee76abd Fix flaky update history test
The filenames we used to store history data locally only had second
level precision. On my machine, the test history test is able to run
multiple `pulumi update` commands in the same second, which causes a
newer history file to overwrite an older one.

This change moves to using a nanosecond precision timestamp when
writing config. In addition, the CLI was trying to sort the updates
that came back from the backend (instead of just trusting them to be
in newest first order, as we documented) so I removed that code as
well.
2018-03-01 16:20:09 -08:00
Matt Ellis 207a9755d8 Rework configuration model
This change updates our configuration model to make it simpler to
understand by removing some features and changing how things are
persisted in files.

Notable changes:

- We've removed the notion of "workspace" vs "project"
  config. Now, configuration is always stored in a file next to
  `Pulumi.yaml` named `Pulumi.<stack-name>.yaml` (the same file we'd
  use for an other stack specific information we would need to persist
  in the future).
- We've removed the notion of project wide configuration. Every new
  stack gets a completely empty set of configuration and there's no
  way to share common values across stacks, instead the common value
  has to be set on each stack.

We retain some of the old code for the configuration system so we can
support upgrading a project in place. That will happen with the next
change.

This change fixes some issues and allows us to close some
others (since they are no longer possible).

Fixes #866
Closes #872
Closes #731
2018-02-28 17:30:50 -08:00
Matt Ellis d99f9457b0 Deprecate old configuration model
We are going to be changing the configuration model. To begin, let's
take most of the existing stuff and mark it as "deprecated" so we can
keep the existing behavior (to help transition newer code forward)
while making it clear what APIs should not be called in the
implementation of `pulumi` itself.
2018-02-28 17:25:09 -08:00
joeduffy 2362d45a5c Eliminate type redundancy
Despite our good progress moving towards having an apitype package,
where our exchange types live and can be shared among the engine and
our services, there were a few major types that were still duplciated.
Resource was the biggest example -- and indeed, the apitype varirant
was missing the new Dependencies property -- but there were others,
like Manfiest, PluginInfo, etc.  These too had semi-random omissions.

This change merges all of these types into the apitype package.  This
not only cleans up the redundancy and missing properties, but will
"force the issue" with respect to keeping them in sync and properly
versioning the information in a backwards compatible way.

The resource/stack package still exists as a simple marshaling layer
to and from the engine's core data types.

Finally, I've made the controversial change to share the actual
Deployment data structure at the apitype layer also.  This will force
us to confront differences in that data structure similarly, and will
allow us to leverage the strong typing throughout to catch issues.
2018-02-28 12:44:55 -08:00
Joe Duffy 811759fb77
Fix missing emojis on Windows (#966)
I was reminded of this yesterday with unprintable characters as I
debugged some things on Windows.  Inspired by Yarn, this change adds
a new flag --emoji (-e for short) that can be used to control whether
we show ASCII-only characters or not in the console.  On Mac, it
defaults to true, and on Windows and Linux, it defaults to false.

This also brings back the retro ASCII-friendly progress spinner
when --emoji is disabled.
2018-02-21 09:42:06 -08:00
Justin Van Patten ed9716f6ef
Create backups of all local stack checkpoint files (#949)
Backup copies of local stack checkpoints are now saved to the
user's home directory (`~/.pulumi/backups`) by default.

This enables users to recover after accidentally deleting their
local `.pulumi` directory (e.g. via `git clean`).

The behavior can be disabled by setting the
PULUMI_DISABLE_CHECKPOINT_BACKUPS environment variable, which
we use to disable backups when running all tests other than the
test for this functionality.
2018-02-20 21:05:57 -08:00
Joe Duffy 776a76dffd
Make some stack-related CLI improvements (#947)
This change includes a handful of stack-related CLI formatting
improvements that I've been noodling on in the background for a while,
based on things that tend to trip up demos and the inner loop workflow.

This includes:

* If `pulumi stack select` is run by itself, use an interactive
  CLI menu to let the user select an existing stack, or choose to
  create a new one.  This looks as follows

      $ pulumi stack select
      Please choose a stack, or choose to create a new one:
        abcdef
        babblabblabble
      > currentlyselected
        defcon
        <create a new stack>

  and is navigated in the usual way (key up, down, enter).

* If a stack name is passed that does not exist, prompt the user
  to ask whether s/he wants to create one on-demand.  This hooks
  interesting moments in time, like `pulumi stack select foo`,
  and cuts down on the need to run additional commands.

* If a current stack is required, but none is currently selected,
  then pop the same interactive menu shown above to select one.
  Depending on the command being run, we may or may not show the
  option to create a new stack (e.g., that doesn't make much sense
  when you're running `pulumi destroy`, but might when you're
  running `pulumi stack`).  This again lets you do with a single
  command what would have otherwise entailed an error with multiple
  commands to recover from it.

* If you run `pulumi stack init` without any additional arguments,
  we interactively prompt for the stack name.  Before, we would
  error and you'd then need to run `pulumi stack init <name>`.

* Colorize some things nicely; for example, now all prompts will
  by default become bright white.
2018-02-16 15:03:54 -08:00
Joe Duffy 55e4dbe835
Update spinner to use modern ASCII/emoji art (#942) 2018-02-15 18:22:17 -08:00
Joe Duffy 902d646215
Rename package to project (#935)
This addresses pulumi/pulumi#446: what we used to call "package" is
now called "project".  This has gotten more confusing over time, now
that we're doing real package management.

Also fixes pulumi/pulumi#426, while in here.
2018-02-14 13:56:16 -08:00
Matt Ellis 39dbdc98e9 Clean up colorization logic
The existing logic would flow colorization information into the
engine, so depending on the settings in the CLI, the engine may or may
not have emitted colorized events. This coupling is not great and we
want to start moving to a world where the presentation happens
exclusively at the CLI level.

With this change, the engine will always produce strings that have the
colorization formatting directives (i.e. the directives that
reconquest/loreley understands) and the CLI will apply
colorization (which could mean either running loreley to turn the
directives into ANSI escape codes, or drop them or retain them, for
debuging purposes).

Fixes #742
2018-01-31 15:46:14 -08:00
Chris Smith 4c217fd358
Add "pulumi history" command (#826)
This PR adds a new `pulumi history` command, which prints the update history for a stack.

The local backend stores the update history in a JSON file on disk, next to the checkpoint file. The cloud backend simply provides the update metadata, and expects to receive all the data from a (NYI) `/history` REST endpoint.

`pkg/backend/updates.go` defines the data that is being persisted. The way the data is wired through the system is adding a new `backend.UpdateMetadata` parameter to a Stack/Backend's `Update` and `Destroy` methods.

I use `tests/integration/stack_outputs/` as the simple app for the related tests, hence the addition to the `.gitignore` and fixing the name in the `Pulumi.yaml`.

Fixes #636.
2018-01-24 18:22:41 -08:00
Matt Ellis ce05cce77f Provide a rudimentary progress spinner
Previously, the `pulumi` tool did not show any indication of progress
when doing a deployment. Combined with the fact that we do not create
resources in parallel it meant that sometime `pulumi` would appear to
hang, when really it was just waiting on some resource to be created
in AWS. In addition, some AWS resources take a long time to create and
CI systems like travis will kill the job if there is no output. This
causes us (and our customers) to have to do crazy dances where we
launch shell scripts that write a dot to the console every once in a
while so we don't get killed. While we plan to overhaul the output
logic (see #617), we take a first step towards interactivity by simply
having a nice little spinner (in the interactive case) and when run
non interactive have `pulumi` print a message that it is still
working.

Fixes #794
2018-01-22 14:21:08 -08:00
Chris Smith 7a5ac5ce06 Export resource change counts from engine 2018-01-20 12:07:03 -08:00
Matt Ellis cc04cd6581 Use per stack key for local stacks instead of per project
In the Pulumi Cloud, there is no guarantee that two stacks will share
the same encryption key. This means that encrypted config can not be
shared across stacks (in the Pulumi.yaml) file. To mimic this behavior
in the local experience, we now use a unique key per stack.

When upgrading an existing project, for any stack with existing
secrets, we copy the existing key into this stack. Future stacks will
get thier own encryption key. This strikes a balance between
expediency of implementation, the end user UX and not having to make a
breaking change.

As part of this change, I have introduced a CHANGELOG.md file in the
root of the repository and added a small note about the change to it.

Fixes #769
2018-01-19 00:50:59 -08:00
Chris Smith 3a3d0698ae
Surface update options to the service (#806)
This PR surfaces the configuration options available to updates, previews, and destroys to the Pulumi Service. As part of this I refactored the options to unify them into a single `engine.UpdateOptions`, since they were all overlapping to various degrees.

With this PR we are adding several new flags to commands, e.g. `--summary` was not available on `pulumi destroy`.

There are also a few minor breaking changes.

- `pulumi destroy --preview` is now `pulumi destroy --dry-run` (to match the actual name of the field).
- The default behavior for "--color" is now `Always`. Previously it was `Always` or `Never` based on the value of a `--debug` flag. (You can specify `--color always` or `--color never` to get the exact behavior.)

Fixes #515, and cleans up the code making some other features slightly easier to add.
2018-01-18 11:10:15 -08:00
pat@pulumi.com 5f28d52e00 Remove the Engine type entirely.
It no longer carries any state. All of its methods are now package-level
functions.
2018-01-08 14:20:51 -08:00
pat@pulumi.com c56e716c31 Refactor the engine's entrypoints.
These changes refactor the engine's entrypoints--Deploy, Destroy, and
Preview--to be update-centric rather than stack-centric. Each of these
methods now takes a value of a new type, Update, that abstracts away the
vagaries of fetching and maintaining the update's state. This
refactoring also reinforces Pulumi.yaml as a CLI concept rather than an
engine concept; the CLI is now the only reader/writer of this format.

These changes will smooth the way for a few refactorings on the service
side that will aid in update isolation.
2018-01-08 14:15:16 -08:00
Matthew Riley 9e3976513c AssertNoError instead of Assert(err == nil)
This may not be exhaustive, but I replaced all instances I could find.
2018-01-08 13:46:21 -08:00
pat@pulumi.com b96217341f Add the ability to {ex,im}port a stack's deployment.
These changes add the ability to export a stack's latest deployment or
import a new deployment to a stack via the Pulumi CLI. These
capabilities are exposed by two new verbs under `stack`:
- export, which writes the current stack's latest deployment to stdout
- import, which reads a new deployment from stdin and applies it to the
  current stack.

In the local case, this simply involves reading/writing the stack's
latest checkpoint file. In the cloud case, this involves hitting two new
endpoints on the service to perform the export or import.
2018-01-05 16:22:31 -08:00
Pat Gavlin e4d9eb6fd3 Support secrets for cloud stacks.
Use the new {en,de}crypt endpoints in the Pulumi.com API to secure
secret config values. The ciphertext for a secret config value is bound
to the stack to which it applies and cannot be shared with other stacks
(e.g. by copy/pasting it around in Pulumi.yaml). All secrets will need
to be encrypted once per target stack.
2017-12-22 07:59:27 -08:00
Joe Duffy bc2cf55463
Implement resource protection (#751)
This change implements resource protection, as per pulumi/pulumi#689.
The overall idea is that a resource can be marked as "protect: true",
which will prevent deletion of that resource for any reason whatsoever
(straight deletion, replacement, etc).  This is expressed in the
program.  To "unprotect" a resource, one must perform an update setting
"protect: false", and then afterwards, they can delete the resource.

For example:

    let res = new MyResource("precious", { .. }, { protect: true });

Afterwards, the resource will display in the CLI with a lock icon, and
any attempts to remove it will fail in the usual ways (in planning or,
worst case, during an actual update).

This was done by adding a new ResourceOptions bag parameter to the
base Resource types.  This is unfortunately a breaking change, but now
is the right time to take this one.  We had been adding new settings
one by one -- like parent and dependsOn -- and this new approach will
set us up to add any number of additional settings down the road,
without needing to worry about breaking anything ever again.

This is related to protected stacks, as described in
pulumi/pulumi-service#399.  Most likely this will serve as a foundational
building block that enables the coarser grained policy management.
2017-12-20 14:31:07 -08:00
Joe Duffy 662ebcbd94
Merge pull request #666 from pulumi/add-logging-to-stack-reading
Log the error when getting a stack fails
2017-12-18 09:51:29 -08:00
CyrusNajmabadi e4946a6620
Allow users to control if and how output is colorized. (#718)
Part of the work to make it easier to tests of diff output.  Specifically, we now allow users to pass --color=option for several pulumi commands.  'option' can be one of 'always', 'never', 'raw', and 'auto' (the default).  

The meaning of these flags are:

1. auto: colorize normally, unless in --debug 
2. always: always colorize no matter what
3. never: never colorize no matter what.
4. raw: colorize, but preserve the original "<{%%}>" style control codes and not the translated platform specific codes.   This is for testing purposes and ensures we can have test for this stuff across platform.
2017-12-14 11:53:02 -08:00
Joe Duffy 36ab8f0087
Make config a little less error prone
As articulated in #714, the way config defaults to workspace-local
configuration is a bit error prone, especially now with the cloud
workflow being the default.  This change implements several improvements:

* First, --save defaults to true, so that configuration changes will
  persist into your project file.  If you want the old local workspace
  behavior, you can specify --save=false.

* Second, the order in which we applied configuration was a little
  strange, because workspace settings overwrote project settings.
  The order is changed now so that we take most specific over least
  specific configuration.  Per-stack is considered more specific
  than global and project settings are considered more specific
  than workspace.

* We now warn anytime workspace local configuration is used.  This
  is a developer scenario and can have subtle effects.  It is simply
  not safe to use in a team environment.  In fact, I lost an arm
  this morning due to workspace config... and that's why you always
  issue warnings for unsafe things.
2017-12-13 10:46:54 -08:00
Matt Ellis 94b9489759 Log the error when getting a stack fails 2017-12-07 18:24:51 -08:00
pat@pulumi.com 7810c824d6 Decrypt configuration nearer to its use.
These changes push the `config.{Map,Value}` interfaces further down into
the deployment engine so that configuration can be decrypted nearer to
its use.

This is the first part of the fix for pulumi/pulumi-ppc#112.
2017-12-04 17:10:40 -08:00
joeduffy 2eb86b24c2 Make some updates based on CR feedback
This change implements some feedback from @ellismg.

* Make backend.Stack an interface and let backends implement it,
  enabling dynamic type testing/casting to access information
  specific to that backend.  For instance, the cloud.Stack conveys
  the cloud URL, org name, and PPC name, for each stack.

* Similarly expose specialized backend.Backend interfaces,
  local.Backend and cloud.Backend, to convey specific information.

* Redo a bunch of the commands in terms of these.

* Keeping with this theme, turn the CreateStack options into an
  opaque interface{}, and let the specific backends expose their
  own structures with their own settings (like PPC name in cloud).

* Show both the org and PPC names in the cloud column printed in
  the stack ls command, in addition to the Pulumi Cloud URL.

Unrelated, but useful:

* Special case the 401 HTTP response and make a friendly error,
  to tell the developer they must use `pulumi login`.  This is
  better than tossing raw "401: Unauthorized" errors in their face.

* Change the "Updating stack '..' in the Pulumi Cloud" message to
  use the correct action verb ("Previewing", "Destroying", etc).
2017-12-03 08:10:50 -08:00
joeduffy b59b8f2e6e Fix cloud tests 2017-12-03 06:34:06 -08:00
joeduffy 1c4e41b916 Improve the overall cloud CLI experience
This improves the overall cloud CLI experience workflow.

Now whether a stack is local or cloud is inherent to the stack
itself.  If you interact with a cloud stack, we transparently talk
to the cloud; if you interact with a local stack, we just do the
right thing, and perform all operations locally.  Aside from sometimes
seeing a cloud emoji pop-up ☁️, the experience is quite similar.

For example, to initialize a new cloud stack, simply:

    $ pulumi login
    Logging into Pulumi Cloud: https://pulumi.com/
    Enter Pulumi access token: <enter your token>
    $ pulumi stack init my-cloud-stack

Note that you may log into a specific cloud if you'd like.  For
now, this is just for our own testing purposes, but someday when we
support custom clouds (e.g., Enterprise), you can just say:

    $ pulumi login --cloud-url https://corp.acme.my-ppc.net:9873

The cloud is now the default.  If you instead prefer a "fire and
forget" style of stack, you can skip the login and pass `--local`:

    $ pulumi stack init my-faf-stack --local

If you are logged in and run `pulumi`, we tell you as much:

    $ pulumi
    Usage:
      pulumi [command]

    // as before...

    Currently logged into the Pulumi Cloud ☁️
        https://pulumi.com/

And if you list your stacks, we tell you which one is local or not:

    $ pulumi stack ls
    NAME            LAST UPDATE       RESOURCE COUNT   CLOUD URL
    my-cloud-stack  2017-12-01 ...    3                https://pulumi.com/
    my-faf-stack    n/a               0                n/a

And `pulumi stack` by itself prints information like your cloud org,
PPC name, and so on, in addition to the usuals.

I shall write up more details and make sure to document these changes.

This change also fairly significantly refactors the layout of cloud
versus local logic, so that the cmd/ package is resonsible for CLI
things, and the new pkg/backend/ package is responsible for the
backends.  The following is the overall resulting package architecture:

* The backend.Backend interface can be implemented to substitute
  a new backend.  This has operations to get and list stacks,
  perform updates, and so on.

* The backend.Stack struct is a wrapper around a stack that has
  or is being manipulated by a Backend.  It resembles our existing
  Stack notions in the engine, but carries additional metadata
  about its source.  Notably, it offers functions that allow
  operations like updating and deleting on the Backend from which
  it came.

* There is very little else in the pkg/backend/ package.

* A new package, pkg/backend/local/, encapsulates all local state
  management for "fire and forget" scenarios.  It simply implements
  the above logic and contains anything specific to the local
  experience.

* A peer package, pkg/backend/cloud/, encapsulates all logic
  required for the cloud experience.  This includes its subpackage
  apitype/ which contains JSON schema descriptions required for
  REST calls against the cloud backend.  It also contains handy
  functions to list which clouds we have authenticated with.

* A subpackage here, pkg/backend/state/, is not a provider at all.
  Instead, it contains all of the state management functions that
  are currently shared between local and cloud backends.  This
  includes configuration logic -- including encryption -- as well
  as logic pertaining to which stacks are known to the workspace.

This addresses pulumi/pulumi#629 and pulumi/pulumi#494.
2017-12-02 14:34:42 -08:00