Merge pull request #224 from knu/graphviz_dot
Add a setting for using locally installed Graphviz for generating diagrams.
Andrew Cantino
3 changed files with 21 additions and 2 deletions
+ 5
- 0
.env.example
@@ -77,3 +77,8 @@ AWS_ACCESS_KEY="your aws access key" |
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| 77 | 77 |
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# Set AWS_SANDBOX to true if you're developing Huginn code. |
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AWS_SANDBOX=false |
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+ |
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+# Use Graphviz for generating diagrams instead of using Google Chart |
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+# Tools. Specify a dot(1) command path built with SVG support |
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+# enabled. |
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+#USE_GRAPHVIZ_DOT=dot |
+ 15
- 0
app/helpers/application_helper.rb
@@ -14,4 +14,19 @@ module ApplicationHelper |
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| 14 | 14 |
link_to '<span class="label label-warning">No</span>'.html_safe, agent_path(agent, :tab => (agent.recent_error_logs? ? 'logs' : 'details')) |
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end |
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end |
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+ |
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+ def render_dot(dot_format_string) |
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+ if (command = ENV['USE_GRAPHVIZ_DOT']) && |
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+ (svg = IO.popen([command, *%w[-Tsvg -q1 -o/dev/stdout /dev/stdin]], 'w+') { |dot|
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+ dot.print dot_format_string |
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+ dot.close_write |
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+ dot.read |
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+ } rescue false) |
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+ svg.html_safe |
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+ else |
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+ tag('img', src: URI('https://chart.googleapis.com/chart').tap { |uri|
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+ uri.query = URI.encode_www_form(cht: 'gv', chl: dot_format_string) |
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+ }) |
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+ end |
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+ end |
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end |
+ 1
- 2
app/views/agents/diagram.html.erb
@@ -19,8 +19,7 @@ |
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| 19 | 19 |
end |
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dot_format_string = dot_format_string + "}" |
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%> |
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- |
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- <img src="https://chart.googleapis.com/chart?cht=gv&chl=<%= CGI::escape dot_format_string %>" /> |
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+ <%= render_dot(dot_format_string) %> |
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</div> |
| 25 | 24 |
</div> |
| 26 | 25 |
</div> |