feat(mattermost): new Mattermost ChatOps integration

Mattermost REST API v4, 6 commands: create post, get channel by name, search
posts, create channel, get user. Bearer-token auth, stdlib-only.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

integrations/mattermost/scripts/create_channel.py

@@ -0,0 +1,64 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, path, cfg, body=None, params=None):
+    url = str(cfg.get("base_url", "")).rstrip("/") + "/api/v4" + path
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": "Bearer " + str(cfg.get("token", "")), "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+def main(cfg, inputs):
+    team_id = inputs.get("team_id")
+    name = inputs.get("name")
+    display_name = inputs.get("display_name")
+    channel_type = inputs.get("channel_type")
+    if not team_id:
+        raise Exception("team_id is required")
+    if not name:
+        raise Exception("name is required")
+    if not display_name:
+        raise Exception("display_name is required")
+
+    return request(
+        "POST",
+        "/channels",
+        cfg,
+        body={
+            "team_id": team_id,
+            "name": name,
+            "display_name": display_name,
+            "type": (channel_type or "O"),
+        },
+    )
+
+
+_run(main)

integrations/mattermost/scripts/create_post.py

@@ -0,0 +1,50 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, path, cfg, body=None, params=None):
+    url = str(cfg.get("base_url", "")).rstrip("/") + "/api/v4" + path
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": "Bearer " + str(cfg.get("token", "")), "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+def main(cfg, inputs):
+    channel_id = inputs.get("channel_id")
+    message = inputs.get("message")
+    if not channel_id:
+        raise Exception("channel_id is required")
+    if not message:
+        raise Exception("message is required")
+
+    return request("POST", "/posts", cfg, body={"channel_id": channel_id, "message": message})
+
+
+_run(main)

integrations/mattermost/scripts/get_channel_by_name.py

@@ -0,0 +1,51 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, path, cfg, body=None, params=None):
+    url = str(cfg.get("base_url", "")).rstrip("/") + "/api/v4" + path
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": "Bearer " + str(cfg.get("token", "")), "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+def main(cfg, inputs):
+    team_name = inputs.get("team_name")
+    channel_name = inputs.get("channel_name")
+    if not team_name:
+        raise Exception("team_name is required")
+    if not channel_name:
+        raise Exception("channel_name is required")
+
+    q = lambda v: urllib.parse.quote(str(v), safe="")
+    return request("GET", "/teams/name/" + q(team_name) + "/channels/name/" + q(channel_name), cfg)
+
+
+_run(main)

integrations/mattermost/scripts/get_user.py

@@ -0,0 +1,48 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, path, cfg, body=None, params=None):
+    url = str(cfg.get("base_url", "")).rstrip("/") + "/api/v4" + path
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": "Bearer " + str(cfg.get("token", "")), "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+def main(cfg, inputs):
+    username = inputs.get("username")
+    if not username:
+        raise Exception("username is required")
+
+    q = lambda v: urllib.parse.quote(str(v), safe="")
+    return request("GET", "/users/username/" + q(username), cfg)
+
+
+_run(main)

integrations/mattermost/scripts/search_posts.py

@@ -0,0 +1,56 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, path, cfg, body=None, params=None):
+    url = str(cfg.get("base_url", "")).rstrip("/") + "/api/v4" + path
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": "Bearer " + str(cfg.get("token", "")), "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+def main(cfg, inputs):
+    team_id = inputs.get("team_id")
+    terms = inputs.get("terms")
+    if not team_id:
+        raise Exception("team_id is required")
+    if not terms:
+        raise Exception("terms is required")
+
+    q = lambda v: urllib.parse.quote(str(v), safe="")
+    return request(
+        "POST",
+        "/teams/" + q(team_id) + "/posts/search",
+        cfg,
+        body={"terms": terms, "is_or_search": True},
+    )
+
+
+_run(main)

integrations/mattermost/scripts/test_connection.py

@@ -0,0 +1,44 @@
+import json, os, sys, urllib.parse, urllib.request, urllib.error
+
+
+def _cfg():
+    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
+
+
+def _inputs():
+    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
+
+
+def request(method, path, cfg, body=None, params=None):
+    url = str(cfg.get("base_url", "")).rstrip("/") + "/api/v4" + path
+    if params:
+        clean = {k: v for k, v in params.items() if v not in (None, "")}
+        if clean:
+            url += "?" + urllib.parse.urlencode(clean)
+    data = json.dumps(body).encode("utf-8") if body is not None else None
+    headers = {"Authorization": "Bearer " + str(cfg.get("token", "")), "Accept": "application/json"}
+    if data is not None:
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, data=data, headers=headers, method=method)
+    with urllib.request.urlopen(req, timeout=60) as r:
+        raw = r.read()
+        return json.loads(raw) if raw else {}
+
+
+def _run(fn):
+    try:
+        print(json.dumps(fn(_cfg(), _inputs())))
+    except urllib.error.HTTPError as e:
+        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
+        sys.exit(1)
+    except Exception as e:
+        print(json.dumps({"error": str(e)}))
+        sys.exit(1)
+
+
+def main(cfg, inputs):
+    resp = request("GET", "/users/me", cfg)
+    return {"ok": True, "user": resp.get("username")}
+
+
+_run(main)