Ubuntu Jammy support. (#96)

* Ubuntu Jammy support.

* Add build instructions to README.md

README.md

@@ -91,6 +91,21 @@ To monitor additional applications, simply relate the filebeat subordinate:
 
     juju add-relation filebeat:beats-host my-charm
 
+## Build and publish new versions
+
+This charm uses the reactive framework. `charm pack` is used to build a
+deployable charm. In order to publish new versions of the charm, the following
+commands need to be run:
+
+**Note:** Use appropriate revision number in `charmcraft release` command.
+
+```
+charmcraft pack
+charmcraft upload filebeat_ubuntu-22.04-amd64_ubuntu-20.04-amd64_ubuntu-18.04-amd64.charm
+charmcraft release filebeat --revision=34 --channel=edge
+charmcraft status filebeat
+```
+
 ## Contact Information
 
 - <[email protected]>

charmcraft.yaml

@@ -0,0 +1,32 @@
+# Learn more about charmcraft.yaml configuration at:
+# https://juju.is/docs/sdk/charmcraft-config
+# This is a template `charmcraft.yaml` file for reactive charms
+# This file is managed by bootstack-charms-spec and should not be modified
+# within individual charm repos. https://launchpad.net/bootstack-charms-spec
+
+type: charm
+
+parts:
+  charm:
+    source: ./
+    plugin: reactive
+    build-snaps: [ charm ]
+
+bases:
+  - build-on:
+    - name: ubuntu
+      channel: "20.04"
+      architectures: ["amd64"]
+    run-on:
+      - name: ubuntu
+        channel: "22.04"
+        architectures:
+          - amd64
+      - name: ubuntu
+        channel: "20.04"
+        architectures:
+          - amd64
+      - name: ubuntu
+        channel: "18.04"
+        architectures:
+          - amd64

reactive/filebeat.py

@@ -6,7 +6,6 @@
 from charms.reactive import remove_state
 from charms.reactive import hook
 from charms.reactive.helpers import data_changed
-from charms.templating.jinja2 import render
 
 from charmhelpers.core import unitdata
 from charmhelpers.core.hookenv import config, log
@@ -108,13 +107,13 @@ def manage_filebeat_logstash_ssl():
         key = base64.b64decode(logstash_ssl_key).decode('utf8')
 
         if data_changed('logstash_cert', cert):
-            render(template='{{ data }}',
-                   context={'data': cert},
-                   target=LOGSTASH_SSL_CERT, perms=0o444)
+            with open(LOGSTASH_SSL_CERT, "w") as cert_file:
+                cert_file.write(cert)
+            os.chmod(LOGSTASH_SSL_CERT, 0o444)
         if data_changed('logstash_key', key):
-            render(template='{{ data }}',
-                   context={'data': key},
-                   target=LOGSTASH_SSL_KEY, perms=0o400)
+            with open(LOGSTASH_SSL_KEY, "w") as key_file:
+                key_file.write(key)
+            os.chmod(LOGSTASH_SSL_KEY, 0o400)
     else:
         if not logstash_ssl_cert and os.path.exists(LOGSTASH_SSL_CERT):
             os.remove(LOGSTASH_SSL_CERT)

templates/filebeat-6.yml

@@ -133,3 +133,9 @@ output:
 {% if juju_principal_unit -%}
 name: {{ juju_principal_unit }}
 {%- endif %}
+seccomp:
+  default_action: errno
+  syscalls:
+    - action: allow
+      names:
+        - clone3