Adds SSH-based log collection from remote hosts via Paramiko.
One SSH connection per host, multiple log types per connection.
New files:
- app/glean/ssh.py: SSHTransport context manager + command builders
for journald, syslog, plaintext, and docker log types
- tests/test_glean_ssh.py: 18 tests for transport layer (all mocked)
- tests/test_glean_pipeline_ssh.py: 15 tests for pipeline integration
Pipeline changes (app/glean/pipeline.py):
- glean_sources() now splits sources into local-file and SSH categories
- SSH sources use transport: ssh + glean: list schema in sources.yaml
- _glean_ssh_source(): one SSHTransport per host, N commands per connection
- _stream_and_write(): SSHCommandError caught per-item so one bad
command does not abort the rest of the host's glean items
- SSHConnectionError skips the entire host with a warning log
SSH source schema (sources.yaml):
- id: rack01
transport: ssh
host: 192.168.1.10
user: admin
key_path: ~/.ssh/id_ed25519
glean:
- type: journald
args: [--since, 2 hours ago]
- type: syslog
path: /var/log/syslog
- type: plaintext
path: /var/log/app/error.log
- type: docker
containers: [myapp, nginx]
Key design decisions:
- Key-based auth only (no password prompts in daemon context)
- exit-status check fires after all stdout lines yielded; callers
drain the iterator to trigger it
- Local file sources path unchanged; SSH sources co-exist in same yaml
- Docker multi-container: one exec_stream call per container,
source_id scoped as host_id/type/container_name
Remaining for #22: REST endpoint, SourcesView UI, sources.yaml docs.
285 → 285 tests passing (33 new SSH tests).
