fixes saltstack#63545 file.keyvalue should allow creating a file if i…

…t doesn't exist

changelog/63545.added.md

@@ -0,0 +1 @@
+Add ability for file.keyvalue to create a file if it doesn't exist

salt/states/file.py

@@ -5418,6 +5418,7 @@ def keyvalue(
     uncomment=None,
     key_ignore_case=False,
     value_ignore_case=False,
+    create_if_missing=False,
 ):
     """
     Key/Value based editing of a file.
@@ -5491,6 +5492,11 @@ def keyvalue(
         the current value is 'yes', will not result in changes when
         ``value_ignore_case`` is set to True.
 
+    create_if_missing
+        Create the file if the destination file is not found.
+
+        .. versionadded:: 3007.0
+
     An example of using ``file.keyvalue`` to ensure sshd does not allow
     for root to login with a password and at the same time setting the
     login-gracetime to 1 minute and disabling all forwarding:
@@ -5564,7 +5570,16 @@ def keyvalue(
     try:
         with salt.utils.files.fopen(name, "r") as fd:
             file_contents = fd.readlines()
-    except OSError:
+            fd.close()
+    except FileNotFoundError as exc:
+        if create_if_missing:
+            append_if_not_found = True
+            file_contents = []
+        else:
+            ret["comment"] = "unable to open {n}".format(n=name)
+            ret["result"] = True if ignore_if_missing else False
+            return ret
+    except OSError as exc:
         ret["comment"] = "unable to open {n}".format(n=name)
         ret["result"] = True if ignore_if_missing else False
         return ret
@@ -5692,8 +5707,6 @@ def keyvalue(
         # keys needed searching), the line can be added to the content to be
         # written once the last checks have been performed
         content.append(line)
-    # finally, close the file
-    fd.close()
 
     # if append_if_not_found was requested, then append any key/value pairs
     # still having a count left on them

tests/pytests/unit/states/file/test_keyvalue.py

@@ -120,3 +120,30 @@ def test_file_keyvalue_not_dict(tmp_path):
         f_contents = tempfile.read_text()
         assert "PermitRootLogin yes" not in f_contents
         assert "#StrictMode yes" in f_contents
+
+
+def test_file_keyvalue_create_if_missing(tmp_path):
+    tempfile = tmp_path / "tempfile"
+    assert not tempfile.exists()
+
+    ret = filestate.keyvalue(
+        name=str(tempfile),
+        key="myKey",
+        value="likesIt",
+        create_if_missing=False,
+    )
+    assert ret["result"] is False
+    assert not tempfile.exists()
+
+    ret = filestate.keyvalue(
+        name=str(tempfile),
+        key="myKey",
+        value="likesIt",
+        create_if_missing=True,
+    )
+    assert ret["result"] is True
+    assert tempfile.exists()
+    f_contents = tempfile.read_text()
+    assert "myKey=likesIt" in f_contents
+
+    tempfile.unlink()