80 lines
3.3 KiB
Markdown
80 lines
3.3 KiB
Markdown
[](https://travis-ci.com/pulumi/pulumi-fabric)
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# Pulumi Fabric
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The Pulumi Fabric ("Lumi") is a framework and toolset for creating reusable cloud services.
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If you are learning about Lumi for the first time, please see [the overview document](docs/overview.md).
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## Installing
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To install Lumi from source, simply run:
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$ go get -u github.com/pulumi/pulumi-fabric/cmd/lumi
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A `GOPATH` must be set. A good default value is `~/go`. In fact, [this is the default in Go 1.8](
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https://github.com/golang/go/issues/17262).
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This installs the `lumi` binary to `$GOPATH/bin`.
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To do anything interesting with Lumi, you will need an SDK for your language of choice. Please see
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[sdk/README.md](`sdk/`) for information about how to obtain, install, and use such an SDK.
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## Development
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This section is for Lumi developers.
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### Prerequisites
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Lumi is written in Go, uses Dep for dependency management, and GoMetaLinter for linting:
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* [Go](https://golang.org/doc/install): https://golang.org/dl
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* [Dep](https://github.com/golang/dep): `$ go get -u github.com/golang/dep/cmd/dep`
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* [GoMetaLinter](https://github.com/alecthomas/gometalinter):
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- `$ go get -u github.com/alecthomas/gometalinter`
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- `$ gometalinter --install`
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### Building and Testing
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To build Lumi, ensure `$GOPATH` is set, and clone into a standard Go workspace:
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$ git clone git@github.com:pulumi/pulumi-fabric $GOPATH/src/github.com/pulumi/pulumi-fabric
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$ cd $GOPATH/src/github.com/pulumi/pulumi-fabric
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The first time you build, you must `make configure` to install dependencies and perform other machine setup:
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$ make configure
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In the future, you can synch dependencies simply by running `dep ensure` explicitly:
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$ dep ensure
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At this point you can run `make` to build and run tests:
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$ make
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This installs the `lumi` binary into `$GOPATH/bin`, which may now be run provided `make` exited successfully.
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The Makefile also supports just running tests (`make test`), just running the linter (`make lint`), just running Govet
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(`make vet`), and so on. Please just refer to the Makefile for the full list of targets.
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### Debugging
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The Lumi tools have extensive logging built in. In fact, we encourage liberal logging in new code, and adding new
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logging when debugging problems. This helps to ensure future debugging endeavors benefit from your sleuthing.
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All logging is done using Google's [Glog library](https://github.com/golang/glog). It is relatively bare-bones, and
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adds basic leveled logging, stack dumping, and other capabilities beyond what Go's built-in logging routines offer.
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The Lumi command line has two flags that control this logging and that can come in handy when debugging problems. The
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`--logtostderr` flag spews directly to stderr, rather than the default of logging to files in your temp directory. And
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the `--verbose=n` flag (`-v=n` for short) sets the logging level to `n`. Anything greater than 3 is reserved for
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debug-level logging, greater than 5 is going to be quite verbose, and anything beyond 7 is extremely noisy.
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For example, the command
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$ lumi eval --logtostderr -v=5
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is a pretty standard starting point during debugging that will show a fairly comprehensive trace log of a compilation.
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