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Add basic REST API support #33

Merged
merged 9 commits into from May 17, 2016
Merged

Add basic REST API support #33

merged 9 commits into from May 17, 2016

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tsandall
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@tsandall tsandall commented May 13, 2016 •
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This PR adds basic REST API support.

One note about this PR:

  • For now, PolicyStore doesn’t rollback failed add/remove operations. E.g,. if a remove operation fails to delete the persisted definition, it will not rollback the removal of rules from the data store. As a result, add/remove are both made to be idempotent. Until we have transaction support in the data store, callers can just retry their add/remove operations in presence of failure (or restart OPA and clean the —policy-dir if necessary).

EDIT: Removed previous comments as they've been addressed in the latest commits.

@tsandall
Add router dependency
abb7639
@tsandall
Refactor compiler interface slightly
1f25d9c
@tsandall
Add basic REST API support to server mode
12dad37 
- REST APIs

    * CRUDL on policy modules
    * Ad-hoc queries
    * Query and patch base documents
    * Query virtual documents

- Add PolicyStore to manage policy definition/module CRUDL operations.

    * Supports persistence of policy definitons.
    * Serve REST API CRUDL operations.
    * Manage install/uninstall of rules into data store.
    * Manage persistence of policy definitions.

- Misc. refactoring

    * Move storage creation into runtime Init.
    * Make AST types JSON serializable. Tweaked ast.Import to use Term instead
    of Value for the path.
@tsandall
Move compare.go into util package
3dc5a3e
@tsandall
Move storage code into storage package
5152739 
- Move storage-related code out of eval
- Rename old Storage type to DataStore
- A few miscellaneous renamings for store pointers
@tsandall
Fix array access in Data API
1b982bc 
Assume that numbers in the Data API paths refer to indices.
@tsandall
Add github.com/golang/glog dependency
be7aa19
@tsandall
Integrate github.com/golang/glog
9333034
@tsandall
Add basic access logs
12e299f 
Wrap the router so to capture response latency and implement an interceptor
that captures status codes and number of bytes written. Log the information
once the inner route completes.
tim-styra
tim-styra reviewed May 17, 2016
View reviewed changes
runtime/server.go
s.registerHandlerV1("/policies/{id}/raw", "GET", s.v1PoliciesRawGet)
s.registerHandlerV1("/policies/{id}", "PUT", s.v1PoliciesPut)
s.registerHandlerV1("/query", "GET", s.v1QueryGet)

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Looks like we decided on manually writing the API instead of using a tool like swagger. Is swagger/etc. an option for the future, or is there something stopping us from using it?

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Swagger is an option in the future.

Before I implemented the server I surveyed Go HTTP frameworks and Swagger support. As far as Swagger support goes, there is not too much available.

The best project I found was go-swagger. This would allow us to define the API in JSON/YAML/etc. and then generate the server code (i.e., models, handler boilerplate, etc.) The main reason for avoiding go-swagger for now is the lack of community behind it. It seems only a single person is working on it at the moment.

At the same time, we will need to have reference docs for the APIs soon. I'm still thinking about how to handle this.

One option would be to generate the Swagger spec (i.e., swagger.json) from annotations in our code (comments, etc.). This is not as nice as generating the code from the spec, but many projects work like this. Unfortunately, the tooling for this is not great. github.com/yvasiyarov/swagger exists but it was abandoned. It's been picked up by the go-swagger maintainer, so perhaps it will see improvement.

I think for now, it's OK to maintain the server code by hand. Swagger is great if you have a large number of endpoints and models to maintain. E.g., if your API is very domain specific, this is often the case. In our case, the APIs are fairly generic so I think there's less to gain from generating client code, etc.

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I spent some time digging around the core commit. Looks good to me.

@tsandall tsandall merged commit 9a2fa09 into open-policy-agent:master May 17, 2016
damienjburks added a commit to damienjburks/opa that referenced this pull request May 18, 2022
@damienjburks
# This is a combination of 38 commits.
d208414 
# This is the 1st commit message:

finalizing changes for formatting with sprintf

Signed-off-by: Damien Burks <damien@damienjburks.com>

# This is the commit message open-policy-agent#2:

updating changes to allow for multiple format strings

Signed-off-by: Damien Burks <damien@damienjburks.com>

# This is the commit message open-policy-agent#3:

fixing golint issues

Signed-off-by: Damien Burks <damien@damienjburks.com>

# This is the commit message open-policy-agent#4:

fixing golint issues

Signed-off-by: Damien Burks <damien@damienjburks.com>

# This is the commit message open-policy-agent#5:

making recommended change: package level variable

Signed-off-by: Damien Burks <damien@damienjburks.com>

# This is the commit message open-policy-agent#6:

adding support for explicit argument indexes

Signed-off-by: Damien Burks <damien@damienjburks.com>

# This is the commit message open-policy-agent#7:

format: don't add 'in' keyword import when 'every' is there (open-policy-agent#4607)

Also ensure that added imports have a location set.

Previously, `opa fmt` on the added test file would have panicked
because the import hadn't had a location.

Fixes open-policy-agent#4606.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#8:

ast+topdown+planner: allow for mocking built-in functions via "with" (open-policy-agent#4540)

With this change, we can replace calls to built-in functions via `with`. The replacement
can either be a value -- which will be used as the return value for every call to the
mocked built-in -- or a reference to a non-built-in function -- when the results need
to depend on the call's arguments.

Compiler, topdown, and planner have been adapted in this change. The included
docs changes describe the replacement options further.

Fixes first part of open-policy-agent#4449. (Missing are non-built-in functions as mock targets.)

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#9:

build(deps): bump google.golang.org/grpc from 1.45.0 to 1.46.0 (open-policy-agent#4617)


# This is the commit message open-policy-agent#10:

docs/policy-testing: use assignment operator in mocks (open-policy-agent#4618)

Additionally, simplify one test example.

Signed-off-by: Anders Eknert <anders@eknert.com>
# This is the commit message open-policy-agent#11:

cmd/capabilities: expose capabilities through CLI (open-policy-agent#4588)

There is a new command argument "capabilities". With this, it is
possible to print the current capabilities version, show all
capabilities versions & print any capabilities version, without the need
of a file. Moreover, for the other commands which use the --capabilities
flag, it is possible to give only the version number, without specifying
a file. However, there are no breaking changes for those who use the
capabilities file as an input for the flag. Unit tests were also
written, in order to test the new argument and the changes made in ast.

Fixes: open-policy-agent#4236

Signed-off-by: IoannisMatzaris <matzarisioannis@gmail.com>
# This is the commit message open-policy-agent#12:

format,eval: don't use source locations when formatting PE output (open-policy-agent#4611)

* format: allow ignoreing source locations
* cmd/eval: format disregarding source locations for partial result

Before, we'd see this output:
```
$ opa eval -p -fsource 'time.clock(input.x)==time.clock(input.y)'
# Query 1
time.clock(time.clock(input.x), input.y)
```

Now, we get the proper answer: `time.clock(input.y, time.clock(input.x))`.

Note that it's a _display_ issue; the JSON output of PE has not been affected.

Fixes open-policy-agent#4609.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#13:

build(deps): bump github/codeql-action from 1 to 2 (open-policy-agent#4621)

Bumps [github/codeql-action](https://github.com/github/codeql-action) from 1 to 2.
- [Release notes](https://github.com/github/codeql-action/releases)
- [Changelog](https://github.com/github/codeql-action/blob/main/CHANGELOG.md)
- [Commits](github/codeql-action@v1...v2)

---
updated-dependencies:
- dependency-name: github/codeql-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
# This is the commit message open-policy-agent#14:

status: Remove activeRevision label on all but one metric (open-policy-agent#4600)

Having one activeRevision label on each of the prometheus metrics emitted
by the status plugin has proven to be problematic with a large number of
bundles. So with this change,

1. we keep the activeRevision label (just on) the last_success_bundle_activation metric.
2. the gauge gets reset, so we only keep the last active_revision (instead of keeping
   them all and therefore avoiding the situation where the /metrics output grows indefinitely)

Fixes open-policy-agent#4584.

Signed-off-by: cmuraru <cmuraru@adobe.com>
# This is the commit message open-policy-agent#15:

website: add playground button to navbar (open-policy-agent#4622)

Addressing one tiny bit of open-policy-agent#4614.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#16:

topdown/net: require prefix length for IPv6 in net.cidr_merge (open-policy-agent#4613)

There are no default prefixes in IPv6, so if an IPv6 without a prefix is fed into
net.cidr_merge, we'll return a non-halt error now.

Before, we'd fail in various ways if a prefix-less IPv6 was fed into
`net.cidr_merge`. With only one, we'd return `[ "<nil>" ]`, with two,
we'd panic.

Fixes open-policy-agent#4596.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#17:

Dockerfile: add source annotation (open-policy-agent#4626)

`org.opencontainers.image.source` URL to get source code for building the image (string)

https://github.com/opencontainers/image-spec/blob/main/annotations.md

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#18:

build(deps): bump github.com/fsnotify/fsnotify v1.5.2 -> v1.5.4 (open-policy-agent#4628)

https://github.com/fsnotify/fsnotify/releases/tag/v1.5.4

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#19:

docs: update version in kubernetes examples (open-policy-agent#4627)

Signed-off-by: yongen.pan <yongen.pan@daocloud.io>
# This is the commit message open-policy-agent#20:

bundle/status: Include bundle type in status information

OPA has support for Delta Bundles. The status object already
contains valuable information such as last activation timestamp but
does not specify if the bundle was a canonical snapshot or delta.

This change updates the bundle.Status object to include the
bundle type string: either "snapshot" or "delta". This can be useful
for status endpoints to differentiate between the bundle types.

Issue: 4477

Signed-off-by: Bryan Fulton <bryan@styra.com>

# This is the commit message open-policy-agent#21:

ast+topdown+planner: replacement of non-built-in functions via 'with' (open-policy-agent#4616)

Follow-up to open-policy-agent#4540

We can now mock functions that are user-defined:

    package test

    f(_) = 1 {
        input.x = "x"
    }
    p = y {
        y := f(1) with f as 2
    }

...following the same scoping rules as laid out for built-in mocks.
The replacement can be a value (replacing all calls), or a built-in,
or another non-built-in function.

Also addresses bugs in the previous slice:
* topdown/evalCall: account for empty rules result from indexer
* topdown/eval: capture value replacement in PE could panic

Note: in PE, we now drop 'with' for function mocks of any kind:

These are always fully replaced in the saved support modules, so
this should be OK.

When keeping them, we'd also have to either copy the existing definitions
into the support module; or create a function stub in it.

Fixes open-policy-agent#4449.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#22:

format: keep whitespaces for multiple indented same-line withs (open-policy-agent#4635)

Fixes open-policy-agent#4634.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#23:

downloader: support for downloading bundles from an OCI registry (open-policy-agent#4558)

Initial support for open-policy-agent#4518.

Configuration uses the 'services' config for registries, via the "type: oci" field.
Bundles configured to pull from that service will then use OCI.

```
services:
  ghcr-registry:
    url: https://ghcr.io
    type: oci
bundles:
  authz:
    service: ghcr-registry
    resource: ghcr.io/${ORGANIZATION}/${REPOSITORY}:${TAG}
    persist: true
    polling:
      min_delay_seconds: 60
      max_delay_seconds: 120
persistence_directory: ${PERSISTENCE_PATH}
```

Service credentials are supported: if you want to pull from a private registry,
use
```
services:
  ghcr-registry:
    url: https://ghcr.io
    type: oci
    credentials:
      bearer:
        token: ${GH_PAT}
```

If no `persistence_directory` is configured, the data is stored in a directory under /tmp.

See docs/devel/OCI.md for manual steps to test this feature with some
OCI registry (like ghcr.io).

Signed-off-by: carabasdaniel <dani@aserto.com>
# This is the commit message open-policy-agent#24:

Prepare v0.40.0 Release (open-policy-agent#4631)

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#25:

Prepare v0.41.0 development (open-policy-agent#4636)

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#26:

docs: Adding example for `rego.metadata.role()` usage (open-policy-agent#4640)

Signed-off-by: Johan Fylling <johan.dev@fylling.se>
# This is the commit message open-policy-agent#27:

build(deps): bump oras.land/oras-go from 1.1.0 to 1.1.1 (open-policy-agent#4643)

Bumps [oras.land/oras-go](https://github.com/oras-project/oras-go) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/oras-project/oras-go/releases)
- [Commits](oras-project/oras-go@v1.1.0...v1.1.1)

---
updated-dependencies:
- dependency-name: oras.land/oras-go
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
# This is the commit message open-policy-agent#28:

build(deps): bump OpenTelemetry 1.6.3 -> 1.7.0 (open-policy-agent#4649)

https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.7.0
https://github.com/open-telemetry/opentelemetry-go-contrib/releases/tag/v1.7.0

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#29:

build(deps): bump github.com/containerd/containerd from 1.6.2 to 1.6.3 (open-policy-agent#4654)

Bumps [github.com/containerd/containerd](https://github.com/containerd/containerd) from 1.6.2 to 1.6.3.
- [Release notes](https://github.com/containerd/containerd/releases)
- [Changelog](https://github.com/containerd/containerd/blob/main/RELEASES.md)
- [Commits](containerd/containerd@v1.6.2...v1.6.3)

---
updated-dependencies:
- dependency-name: github.com/containerd/containerd
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
# This is the commit message open-policy-agent#30:

Update k8s examples to the latest schema (open-policy-agent#4655)

Signed-off-by: Víctor Martínez Bevià <vicmarbev@gmail.com>
# This is the commit message open-policy-agent#31:

Fix incorrect padding claims (open-policy-agent#4657)

Signed-off-by: Anders Eknert <anders@eknert.com>
# This is the commit message open-policy-agent#32:

build(deps): bump github.com/containerd/containerd from 1.6.3 to 1.6.4 (open-policy-agent#4662)

Bumps [github.com/containerd/containerd](https://github.com/containerd/containerd) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/containerd/containerd/releases)
- [Changelog](https://github.com/containerd/containerd/blob/main/RELEASES.md)
- [Commits](containerd/containerd@v1.6.3...v1.6.4)

---
updated-dependencies:
- dependency-name: github.com/containerd/containerd
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
# This is the commit message open-policy-agent#33:

build(deps): bump docker/setup-qemu-action from 1 to 2 (open-policy-agent#4668)


# This is the commit message open-policy-agent#34:

build(deps): bump docker/setup-buildx-action from 1 to 2 (open-policy-agent#4669)

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1 to 2.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v1...v2)

---
updated-dependencies:
- dependency-name: docker/setup-buildx-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
# This is the commit message open-policy-agent#35:

build(deps): github.com/bytecodealliance/wasmtime-go 0.35.0 -> 0.36.0 (open-policy-agent#4652)

* build(deps): bump wasmtime-go: 0.35.0 -> 0.36.0
* internal/wasm: adapt to using epoch-based interruption

Looks like we don't get frames for this.

Also, there is currentlty no better way than comparing the message,
as the trap code isn't surfaced (yet).

Fixes open-policy-agent#4663.

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>
# This is the commit message open-policy-agent#36:

ecosystem: Add Sansshell (open-policy-agent#4674)


Signed-off-by: James Chacon <james.chacon@snowflake.com>
# This is the commit message open-policy-agent#37:

topdown: Add units.parse builtin (open-policy-agent#4676)

This function works on all base decimal and binary SI units of the set:

    m, K/Ki, M/Mi, G/Gi, T/Ti, P/Pi, and E/Ei

Note: Unlike `units.parse_bytes`, this function is case sensitive.

Fixes open-policy-agent#1802.

Signed-off-by: Philip Conrad <philipaconrad@gmail.com>
# This is the commit message open-policy-agent#38:

docs/contrib-code: Add capabilities step to built-in functions tutorial (open-policy-agent#4677)

Signed-off-by: Philip Conrad <philipaconrad@gmail.com>
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