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https://github.com/seamia/protodot

transforming your .proto files into .dot files (and .svg, .png if you happen to have graphviz installed)
https://github.com/seamia/protodot

cli dependency-graph dot go golang graph graphviz graphviz-dot-language grpc png portable-network-graphics proto3 protobuf protoc protocol-buffers scalable-vector-graphics svg visualization

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transforming your .proto files into .dot files (and .svg, .png if you happen to have graphviz installed)

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# protodot

transforming your `.proto` files into `.dot` files (and `.svg`, `.png` if you happen to have `graphviz` installed)



## online demo

you can find an online demo of this tool [here](https://protodot.seamia.net)



## data pipeline




## installation

you can download the sources (from this page) and build `protodot` yourself, or

you can download pre-built binaries for a few selected environments (or from [here](https://github.com/seamia/protodot/tree/master/binaries)):



   * Darwin ([x86](https://protodot.seamia.net/binaries/darwin), [arm](https://protodot.seamia.net/binaries/darwin.arm))

   * [Linux](https://protodot.seamia.net/binaries/linux)

   * [Wasm](https://protodot.seamia.net/binaries/wasm)

   * [Windows](https://protodot.seamia.net/binaries/windows)



`protodot` output is highly customizable through its configuration file and a set of templates files.

if you installed `protodot` from the binary distribution - you may want to extract aforementioned files by running:



```

   ./protodot -install

```



## command line arguments



   * `-src what.proto` - location and name of the source file, required

   * `-config config.json` - location and name of the configuration file, optional

   * `-select .one.two;three.four` - name(s) of the selected elements to show, optional, explained later in this document

   * `-output save-it-here` - name of the output file, optional

   * `-inc /abc/def;/xyz` - (semicolon separated) list of the include directories, optional



## configuration file

tbd



## selected output

sometimes the resulting diagram can be overwhelming.

you have an option to limit the output to the elements that interest you the most, hence `-select args` command line option.

so far, `args` in `-select args` can take one of the three available forms:

   * list of the elements (and their dependencies) that you want to see included (separated by `;`). the elements can be `enums`, `messages`, `rpc` methods and `services`.

   * if you specify `*` as an argument - this will result in the inclusion of the elements declared in the **main** `.proto` file (specified in `-src` argument) and their dependencies. in other words: all the **unused** elements declared in all the **included** `.proto` files will not be shown.

   * if you specify `imports` as an argument - `protodot` will generate import dependency graph (see an example below)



## an example of output




## an illustration of effects of different `-select` options

using `https://github.com/googleapis/googleapis/blob/master/google/privacy/dlp/v2/dlp.proto` as the source



### not using `-select`

everything declared in the root `.proto` file and all the `imports` will be produced:




### using `-select *`

only elements declared in the root `.proto` file and their dependencies will be produced:




### using `-select imports`

only `imports` dependency graph will be produced:




### using `-select .ListDlpJobs`

in this particular case, the name of the `rpc` method was specified: this will result in production of the requested `rpc` method, it's encompasing `service` element and all the dependencied of the method:




### using `-select .AnalyzeDataSourceRiskDetails`

same as above, but instead of `rpc` method, name of the `message` was specified:




## how to (automatically) generate `.svg` and/or `.png` images from produced `.dot` file

1. install `graphviz` (see https://graphviz.gitlab.io/download/ for the instructions)

2. specify the location of the `dot` utility (which is a part of `graphviz)` in your version of configuration file, e.g.

```

{

	"locations": {

		"graphviz":	"/path/to/dot",

```

3. set approptiate `options` in your version of configuration file, e.g.

```

{

	"options" : {

		"generate .png file":		false,

		"generate .svg file":		true,



```