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## Architecture Diagram | ||
```mermaid | ||
architecture-beta | ||
service left_disk(disk)[Disk] | ||
service top_disk(disk)[Disk] | ||
service bottom_disk(disk)[Disk] | ||
service top_gateway(internet)[Gateway] | ||
service bottom_gateway(internet)[Gateway] | ||
junction junctionCenter | ||
junction junctionRight | ||
left_disk:R -- L:junctionCenter | ||
top_disk:B -- T:junctionCenter | ||
bottom_disk:T -- B:junctionCenter | ||
junctionCenter:R -- L:junctionRight | ||
top_gateway:B -- T:junctionRight | ||
bottom_gateway:T -- B:junctionRight | ||
``` |
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//go:build linux || darwin | ||
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// Package main is generating mermaid sequence diagram. | ||
package main | ||
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import ( | ||
"io" | ||
"os" | ||
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"github.com/nao1215/markdown" | ||
"github.com/nao1215/markdown/mermaid/arch" | ||
) | ||
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//go:generate go run main.go | ||
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func main() { | ||
f, err := os.Create("generated.md") | ||
if err != nil { | ||
panic(err) | ||
} | ||
defer f.Close() | ||
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diagram := arch.NewArchitecture(io.Discard). | ||
Service("left_disk", arch.IconDisk, "Disk"). | ||
Service("top_disk", arch.IconDisk, "Disk"). | ||
Service("bottom_disk", arch.IconDisk, "Disk"). | ||
Service("top_gateway", arch.IconInternet, "Gateway"). | ||
Service("bottom_gateway", arch.IconInternet, "Gateway"). | ||
Junction("junctionCenter"). | ||
Junction("junctionRight"). | ||
LF(). | ||
Edges( | ||
arch.Edge{ | ||
ServiceID: "left_disk", | ||
Position: arch.PositionRight, | ||
Arrow: arch.ArrowNone, | ||
}, | ||
arch.Edge{ | ||
ServiceID: "junctionCenter", | ||
Position: arch.PositionLeft, | ||
Arrow: arch.ArrowNone, | ||
}). | ||
Edges( | ||
arch.Edge{ | ||
ServiceID: "top_disk", | ||
Position: arch.PositionBottom, | ||
Arrow: arch.ArrowNone, | ||
}, | ||
arch.Edge{ | ||
ServiceID: "junctionCenter", | ||
Position: arch.PositionTop, | ||
Arrow: arch.ArrowNone, | ||
}). | ||
Edges( | ||
arch.Edge{ | ||
ServiceID: "bottom_disk", | ||
Position: arch.PositionTop, | ||
Arrow: arch.ArrowNone, | ||
}, | ||
arch.Edge{ | ||
ServiceID: "junctionCenter", | ||
Position: arch.PositionBottom, | ||
Arrow: arch.ArrowNone, | ||
}). | ||
Edges( | ||
arch.Edge{ | ||
ServiceID: "junctionCenter", | ||
Position: arch.PositionRight, | ||
Arrow: arch.ArrowNone, | ||
}, | ||
arch.Edge{ | ||
ServiceID: "junctionRight", | ||
Position: arch.PositionLeft, | ||
Arrow: arch.ArrowNone, | ||
}). | ||
Edges( | ||
arch.Edge{ | ||
ServiceID: "top_gateway", | ||
Position: arch.PositionBottom, | ||
Arrow: arch.ArrowNone, | ||
}, | ||
arch.Edge{ | ||
ServiceID: "junctionRight", | ||
Position: arch.PositionTop, | ||
Arrow: arch.ArrowNone, | ||
}). | ||
Edges( | ||
arch.Edge{ | ||
ServiceID: "bottom_gateway", | ||
Position: arch.PositionTop, | ||
Arrow: arch.ArrowNone, | ||
}, | ||
arch.Edge{ | ||
ServiceID: "junctionRight", | ||
Position: arch.PositionBottom, | ||
Arrow: arch.ArrowNone, | ||
}).String() //nolint | ||
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err = markdown.NewMarkdown(f). | ||
H2("Architecture Diagram"). | ||
CodeBlocks(markdown.SyntaxHighlightMermaid, diagram). | ||
Build() | ||
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if err != nil { | ||
panic(err) | ||
} | ||
} |
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// Package arch is mermaid architecture diagram builder. | ||
// The building blocks of an architecture are groups, services, edges, and junctions. | ||
// The arch package incorporates beta features of Mermaid, so the specifications are subject to significant changes. | ||
package arch | ||
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import ( | ||
"fmt" | ||
"io" | ||
"strings" | ||
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"github.com/nao1215/markdown/internal" | ||
) | ||
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// Architecture is a architecture diagram builder. | ||
type Architecture struct { | ||
// body is architecture diagram body. | ||
body []string | ||
// config is the configuration for the architecture diagram. | ||
config *config | ||
// dest is output destination for architecture diagram body. | ||
dest io.Writer | ||
// err manages errors that occur in all parts of the architecture building. | ||
err error | ||
} | ||
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// NewArchitecture returns a new Architecture. | ||
func NewArchitecture(w io.Writer, opts ...Option) *Architecture { | ||
c := newConfig() | ||
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for _, opt := range opts { | ||
opt(c) | ||
} | ||
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return &Architecture{ | ||
body: []string{"architecture-beta"}, | ||
dest: w, | ||
config: c, | ||
} | ||
} | ||
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// String returns the architecture diagram body. | ||
func (a *Architecture) String() string { | ||
return strings.Join(a.body, internal.LineFeed()) | ||
} | ||
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// Build writes the architecture diagram body to the output destination. | ||
func (a *Architecture) Build() error { | ||
if _, err := a.dest.Write([]byte(a.String())); err != nil { | ||
if a.err != nil { | ||
return fmt.Errorf("failed to write: %w: %s", err, a.err.Error()) //nolint:wrapcheck | ||
} | ||
return fmt.Errorf("failed to write: %w", err) | ||
} | ||
return nil | ||
} | ||
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// Error returns the error that occurred during the architecture diagram building. | ||
func (a *Architecture) Error() error { | ||
return a.err | ||
} | ||
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// LF add a line feed to the architecture diagram body. | ||
func (a *Architecture) LF() *Architecture { | ||
a.body = append(a.body, "") | ||
return a | ||
} |
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