Accelerate YAML operations with LibYAML

Patch PyYAML (via the pylibyaml library) to automatically enable the
LibYAML parser and emitter, which are faster than the Python versions.

https://pypi.org/project/pylibyaml/

Change-Id: Ic48d2234ca3107404d9f883ca6038a12ca06a408

Pipfile

@@ -24,6 +24,7 @@ cryptography = "~=2.3.1"
 python-dateutil = "~=2.7.3"
 GitPython = "~=2.1.11"
 docker = ">=3.7.2"
+pylibyaml = "~=0.1"
 PyYAML = "~=5.1"
 deckhand = {git = "https://opendev.org/airship/deckhand.git",ref = "e7ba6828a0a1ca27fae596f6e0ee5a857f28001d"}
 shipyard-client = {git = "https://opendev.org/airship/shipyard.git",ref = "70410cc478e6aec4abad88c84d68684edfedb376",subdirectory = "src/bin/shipyard_client"}

Pipfile.lock

@@ -793,6 +793,13 @@
             "markers": "sys_platform != 'win32' and sys_platform != 'darwin' and sys_platform != 'sunos5'",
             "version": "==0.9.6"
         },
+        "pylibyaml": {
+            "hashes": [
+                "sha256:3b58dea061903c04689e35fab63ec149f7cf5e82f0808bd3425fb3ab3950623e"
+            ],
+            "index": "pypi",
+            "version": "==0.1.0"
+        },
         "pyparsing": {
             "hashes": [
                 "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",

pegleg/__init__.py

@@ -0,0 +1 @@
+import pylibyaml  # noqa: F401  # patch pyyaml to use libyaml bindings

requirements.txt

@@ -83,6 +83,7 @@ pycodestyle==2.0.0
 pycparser==2.20; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pyflakes==1.2.3
 pyinotify==0.9.6; sys_platform != 'win32' and sys_platform != 'darwin' and sys_platform != 'sunos5'
+pylibyaml==0.1.0
 pyparsing==2.4.7; python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pyperclip==1.8.0
 python-barbicanclient==4.7.0

tests/__init__.py

@@ -0,0 +1 @@
+import pylibyaml  # noqa: F401  # patch pyyaml to use libyaml bindings