depth is tool to retrieve and visualize Go source code dependency trees.
Download the appropriate binary for your platform from the Releases page, or:
go get github.com/KyleBanks/depth/cmd/depthdepth can be used as a standalone command-line application, or as a package within your own project.
Simply execute depth with one or more package names to visualize. You can use the fully qualified import path of the package, like so:
$ depth github.com/KyleBanks/depth/cmd/depth
github.com/KyleBanks/depth/cmd/depth
├ encoding/json
├ flag
├ fmt
├ io
├ log
├ os
├ strings
└ github.com/KyleBanks/depth
├ fmt
├ go/build
├ path
├ sort
└ strings
12 dependencies (11 internal, 1 external, 0 testing).Or you can use a relative path, for example:
$ depth .
$ depth ./cmd/depth
$ depth ../You can also use depth on the Go standard library:
$ depth strings
strings
├ errors
├ internal/bytealg
├ io
├ sync
├ unicode
├ unicode/utf8
└ unsafe
7 dependencies (7 internal, 0 external, 0 testing).Visualizing multiple packages at a time is supported by simply naming the packages you'd like to visualize:
$ depth strings github.com/KyleBanks/depth
strings
├ errors
├ internal/bytealg
├ io
├ sync
├ unicode
├ unicode/utf8
└ unsafe
7 dependencies (7 internal, 0 external, 0 testing).
github.com/KyleBanks/depth
├ bytes
├ errors
├ go/build
├ os
├ path
├ sort
└ strings
7 dependencies (7 internal, 0 external, 0 testing).By default, depth only resolves the top level of dependencies for standard library packages, however you can use the -internal flag to visualize all internal dependencies:
$ depth -internal strings
strings
├ errors
│ └ internal/reflectlite
│ ├ internal/unsafeheader
│ │ └ unsafe
│ ├ runtime
│ │ ├ internal/abi
│ │ │ └ unsafe
│ │ ├ internal/bytealg
│ │ │ ├ internal/cpu
│ │ │ └ unsafe
│ │ ├ internal/cpu
│ │ ├ internal/goexperiment
│ │ ├ runtime/internal/atomic
│ │ │ └ unsafe
│ │ ├ runtime/internal/math
│ │ │ └ runtime/internal/sys
│ │ ├ runtime/internal/sys
│ │ └ unsafe
│ └ unsafe
├ internal/bytealg
├ io
│ ├ errors
│ └ sync
│ ├ internal/race
│ │ └ unsafe
│ ├ runtime
│ ├ sync/atomic
│ │ └ unsafe
│ └ unsafe
├ sync
├ unicode
├ unicode/utf8
└ unsafe
18 dependencies (18 internal, 0 external, 0 testing).The -max flag limits the dependency tree to the maximum depth provided. For example, if you supply -max 1 on the depth package, your output would look like so:
$ depth -max 1 github.com/KyleBanks/depth/cmd/depth
github.com/KyleBanks/depth/cmd/depth
├ encoding/json
├ flag
├ fmt
├ io
├ log
├ os
├ strings
└ github.com/KyleBanks/depth
7 dependencies (6 internal, 1 external, 0 testing).
The -max flag is particularly useful in conjunction with the -internal flag which can lead to very deep dependency trees.
By default, depth ignores dependencies that are only required for testing. However, you can view test dependencies using the -test flag:
$ depth -test strings
strings
├ bytes
├ errors
├ fmt
├ internal/bytealg
├ internal/testenv
├ io
├ math/rand
├ reflect
├ strconv
├ sync
├ testing
├ unicode
├ unicode/utf8
└ unsafe
14 dependencies (14 internal, 0 external, 7 testing).The -explain flag instructs depth to print import chains in which the
target-package is found:
$ depth -explain strings github.com/KyleBanks/depth/cmd/depth
github.com/KyleBanks/depth/cmd/depth -> strings
github.com/KyleBanks/depth/cmd/depth -> github.com/KyleBanks/depth -> stringsThe -json flag instructs depth to output dependencies in JSON format:
$ depth -json github.com/KyleBanks/depth/cmd/depth
{
"name": "github.com/KyleBanks/depth/cmd/depth",
"deps": [
{
"name": "encoding/json",
"internal": true,
"deps": null
},
...
{
"name": "github.com/KyleBanks/depth",
"internal": false,
"deps": [
{
"name": "go/build",
"internal": true,
"deps": null
},
...
]
}
]
}The depth package can easily be used to retrieve the dependency tree for a particular package in your own project. For example, here's how you would retrieve the dependency tree for the strings package:
import "github.com/KyleBanks/depth"
var t depth.Tree
err := t.Resolve("strings")
if err != nil {
log.Fatal(err)
}
// Output: "'strings' has 4 dependencies."
log.Printf("'%v' has %v dependencies.", t.Root.Name, len(t.Root.Deps)) For additional customization, simply set the appropriate flags on the Tree before resolving:
import "github.com/KyleBanks/depth"
t := depth.Tree {
ResolveInternal: true,
ResolveTest: true,
MaxDepth: 10,
}
err := t.Resolve("strings")depth was developed by Kyle Banks.
depth is available under the MIT license.
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