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mitogen-0.3.9/mitogen/kubectl.py

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+# Copyright 2018, Yannig Perre
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+#
+# 3. Neither the name of the copyright holder nor the names of its contributors
+# may be used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+# !mitogen: minify_safe
+
+import mitogen.parent
+
+
+class Options(mitogen.parent.Options):
+    pod = None
+    kubectl_path = 'kubectl'
+    kubectl_args = None
+
+    def __init__(self, pod, kubectl_path=None, kubectl_args=None, **kwargs):
+        super(Options, self).__init__(**kwargs)
+        assert pod
+        self.pod = pod
+        if kubectl_path:
+            self.kubectl_path = kubectl_path
+        self.kubectl_args = kubectl_args or []
+
+
+class Connection(mitogen.parent.Connection):
+    options_class = Options
+    child_is_immediate_subprocess = True
+
+    # TODO: better way of capturing errors such as "No such container."
+    create_child_args = {
+        'merge_stdio': True
+    }
+
+    def _get_name(self):
+        return u'kubectl.%s%s' % (self.options.pod, self.options.kubectl_args)
+
+    def get_boot_command(self):
+        bits = [
+            self.options.kubectl_path
+        ] + self.options.kubectl_args + [
+            'exec', '-it', self.options.pod
+        ]
+        return bits + ["--"] + super(Connection, self).get_boot_command()