Adding datasourceReachable function

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/docs/content/functions/data.md b/docs/content/functions/data.md
index 654e45af..277daafb 100644
--- a/docs/content/functions/data.md
+++ b/docs/content/functions/data.md
@@ -319,13 +319,24 @@ defined.
 
 Note: this does _not_ verify if the datasource is reachable.
 
-Useful when used in an `if`/`else` block
+Useful when used in an `if`/`else` block.
 
 ```console
 $ echo '{{if (datasourceExists "test")}}{{datasource "test"}}{{else}}no worries{{end}}' | gomplate
 no worries
 ```
 
+## `datasourceReachable`
+
+Tests whether or not a given datasource is defined and reachable, where the definition of "reachable" differs by datasource, but generally means the data is able to be read successfully.
+
+Useful when used in an `if`/`else` block.
+
+```console
+$ gomplate -i '{{if (datasourceReachable "test")}}{{datasource "test"}}{{else}}no worries{{end}}' -d test=https://bogus.example.com/wontwork.json
+no worries
+```
+
 ## `ds`
 
 Alias to [`datasource`](#datasource)