Introduce LogJuicer roles

This change adds new roles to run logjuicer in zuul jobs:
  https://github.com/logjuicer/logjuicer

Change-Id: I02824a18285a16c8f0be6bb96b5404aa0d601c16

doc/source/logjuicer-roles.rst

@@ -0,0 +1,18 @@
+LogJuicer Roles
+===============
+
+`LogJuicer <https://github.com/logjuicer/logjuicer>`_ extracts anomalies from log files.
+
+You have two options to integrate LogJuicer in your Zuul job post-run phase:
+
+#. Deploy the `web-service <https://github.com/logjuicer/logjuicer/tree/main/crates/web-service>`_ and use the :zuul:role:`report-logjuicer`.
+
+#. Use the :zuul:role:`run-logjuicer` to create the report locally:
+
+  * For single-node job, the role can be used in untrusted playbooks.
+  * For multi-node job, the role must be used on localhost (the executor) between the :zuul:role:`fetch-output` and the log upload. Note that a future version may support merging reports produced on multi nodes through an untrusted playbooks.
+
+In both case, a new artifact named "LogJuicer Report" will be provided to access the build report.
+
+.. zuul:autorole:: report-logjuicer
+.. zuul:autorole:: run-logjuicer

doc/source/roles.rst

@@ -29,3 +29,4 @@ Roles
    rust-roles
    system-roles
    translation-roles
+   logjuicer-roles

roles/report-logjuicer/README.rst

@@ -0,0 +1,25 @@
+Create a LogJuicer report link
+
+This role emits an artifact to create a report through a LogJuicer web service.
+Add the following task to your job post-run phase:
+
+.. code-block:: yaml
+
+   - when: not zuul_success | bool
+     include_role:
+       name: report-logjuicer
+     vars:
+       logjuicer_web_url: https://softwarefactory-project.io/logjuicer
+       zuul_web_url: https://zuul.opendev.org/t/{{ zuul.tenant }}
+
+
+**Role Variables**
+
+.. zuul:rolevar:: logjuicer_web_url
+
+   The http url of the LogJuicer web service.
+
+.. zuul:rolevar:: zuul_web_url
+
+   The http url of zuul-web.
+   For multi-tenant deployment, add ``/t/{{ zuul.tenant }}``.

roles/report-logjuicer/tasks/main.yaml

@@ -0,0 +1,8 @@
+---
+- name: Return LogJuicer report url
+  zuul_return:
+    data:
+      zuul:
+        artifacts:
+          - name: "LogJuicer Report"
+            url: "{{ logjuicer_web_url }}/report/new?target={{ zuul_web_url }}/build/{{ zuul.build }}"

roles/run-logjuicer/README.rst

@@ -0,0 +1,28 @@
+Create a LogJuicer report
+
+This role runs the `LogJuicer <https://github.com/logjuicer/logjuicer>`_ tool
+to create a report of the current build.
+For single-node jobs, the role can be used on the test instance in the job post-run phase.
+
+.. code-block:: yaml
+
+   - when: not zuul_success | bool
+     include_role:
+       name: run-logjuicer
+     vars:
+       zuul_web_url: https://zuul.opendev.org/
+
+For multi-node jobs, the role must be used on localhost (the executor)
+between the :zuul:role:`fetch-output` and the log upload.
+
+
+**Role Variables**
+
+.. zuul:rolevar:: zuul_web_url
+
+   The zuul-web URL, to lookup baselines.
+
+.. zuul:rolevar:: logjuicer_max_run_time
+   :default: 900
+
+   Maximum runtime in seconds.

roles/run-logjuicer/defaults/main.yaml

@@ -0,0 +1,9 @@
+---
+# Update from https://github.com/logjuicer/logjuicer/releases
+logjuicer_version: 0.9.6
+
+# Enable logjuicer debug logs
+logjuicer_debug: false
+
+# Maximum runtime in seconds
+logjuicer_max_run_time: 900

roles/run-logjuicer/tasks/install.yaml

@@ -0,0 +1,15 @@
+---
+- name: Install LogJuicer
+  shell: |
+    set -o pipefail
+    mkdir -p ~/.local/bin
+    curl -L https://github.com/logjuicer/logjuicer/releases/download/{{ logjuicer_version }}/logjuicer-x86_64-linux.tar.bz2 | tar -C ~/.local/ -xjvf -
+  tags:
+    # skip using file module to create the directory to keep this role short
+    - skip_ansible_lint
+  args:
+    executable: '/bin/bash'
+
+- name: Set logjuicer_cmd fact
+  set_fact:
+    logjuicer_cmd: "{% if logjuicer_debug %}env LOGJUICER_LOG=debug {% endif %}{{ ansible_env.HOME }}/.local/bin/logjuicer"

roles/run-logjuicer/tasks/main.yaml

@@ -0,0 +1,7 @@
+---
+- name: Detect anomalies with logjuicer
+  block:
+    - name: Install logjuicer
+      include_tasks: install.yaml
+    - name: Run logjuicer
+      include_tasks: run.yaml

roles/run-logjuicer/tasks/run.yaml

@@ -0,0 +1,44 @@
+---
+- name: Check for multi-node usages
+  when: ansible_play_hosts_all | length > 1
+  fail:
+    msg: "Run logjuicer from the executor after the fetch-output for multi-node jobs"
+
+- name: Setup multi-node fact
+  when: inventory_hostname == "localhost"
+  set_fact:
+    _logs_path: "{{ zuul.executor.log_root }}"
+
+- name: Setup single-node
+  when: inventory_hostname != "localhost"
+  block:
+    - name: Setup fact
+      set_fact:
+        _logs_path: "{{ ansible_user_dir }}/zuul-output/logs"
+
+    - name: Copy the console log and inventory for analysis on the test instance
+      copy:
+        src: "{{ zuul.executor.log_root }}/{{ zj_item }}"
+        dest: "{{ _logs_path }}/"
+      loop_control:
+        loop_var: zj_item
+      loop:
+        - "job-output.txt"
+        - "zuul-info"
+
+- name: Analyse the logs
+  command: >
+    timeout {{ logjuicer_max_run_time }}s {{ logjuicer_cmd }}
+      --report {{ _logs_path }}/logjuicer.{% if zuul_log_compress|default(false) %}gz{% else %}bin{% endif %}
+      zuul-build --api-url {{ zuul_web_url }} {{ _logs_path }}/
+  ignore_errors: true
+  register: _logjuicer_run
+
+- name: Register the output
+  when: _logjuicer_run.rc == 0
+  zuul_return:
+    data:
+      zuul:
+        artifacts:
+          - name: "LogJuicer Report"
+            url: "logjuicer.html"

test-playbooks/run-logjuicer.yaml

@@ -0,0 +1,13 @@
+---
+- hosts: all
+  tasks:
+    - name: Generate random data
+      command: "echo {{ log_line }}"
+      vars:
+        log_line: "{{ ['eventa occured today', 'eventb happened previously', 'eventc presently failed'] | random }}"
+
+    - name: Run logjuicer
+      include_role:
+        name: run-logjuicer
+      vars:
+        zuul_web_url: https://zuul.opendev.org/

zuul-tests.d/logs-jobs.yaml

@@ -15,6 +15,14 @@
       - test-playbooks/upload-logs-s3.yaml
     run: test-playbooks/upload-logs-s3.yaml
 
+- job:
+    name: zuul-jobs-test-run-logjuicer
+    description: Test the run-logjuicer role
+    files:
+      - roles/run-logjuicer/.*
+      - test-playbooks/run-loreduce.yaml
+    run: test-playbooks/run-logjuicer.yaml
+
 # -* AUTOGENERATED *-
 #  The following project section is autogenerated by
 #    tox -e update-test-platforms
@@ -25,6 +33,7 @@
       jobs: &id001
         - zuul-jobs-test-local-log-download
         - zuul-jobs-test-upload-logs-s3
+        - zuul-jobs-test-run-logjuicer
     gate:
       jobs: *id001
     periodic-weekly: