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https://github.com/tubearchivist/tubearchivist-frontend.git
synced 2024-11-22 03:40:14 +00:00
refactor ElasticIndex and ElasticBackup to use ElasticWrap and IndexPaginate
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@ -10,7 +10,7 @@ import os
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import zipfile
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from datetime import datetime
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import requests
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from home.src.es.connect import ElasticWrap, IndexPaginate
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from home.src.ta.config import AppConfig
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from home.src.ta.helper import ignore_filelist
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@ -20,11 +20,6 @@ class ElasticIndex:
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handle mapping and settings on elastic search for a given index
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"""
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CONFIG = AppConfig().config
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ES_URL = CONFIG["application"]["es_url"]
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ES_AUTH = CONFIG["application"]["es_auth"]
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HEADERS = {"Content-type": "application/json"}
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def __init__(self, index_name, expected_map, expected_set):
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self.index_name = index_name
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self.expected_map = expected_map
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@ -33,15 +28,9 @@ class ElasticIndex:
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def index_exists(self):
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"""check if index already exists and return mapping if it does"""
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index_name = self.index_name
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url = f"{self.ES_URL}/ta_{index_name}"
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response = requests.get(url, auth=self.ES_AUTH)
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exists = response.ok
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if exists:
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details = response.json()[f"ta_{index_name}"]
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else:
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details = False
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response, status_code = ElasticWrap(f"ta_{self.index_name}").get()
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exists = status_code == 200
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details = response.get(f"ta_{self.index_name}", False)
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return exists, details
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@ -110,63 +99,41 @@ class ElasticIndex:
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def rebuild_index(self):
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"""rebuild with new mapping"""
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# backup
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self.reindex("backup")
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# delete original
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self.delete_index(backup=False)
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# create new
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self.create_blank()
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self.reindex("restore")
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# delete backup
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self.delete_index()
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def reindex(self, method):
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"""create on elastic search"""
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index_name = self.index_name
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if method == "backup":
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source = f"ta_{index_name}"
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destination = f"ta_{index_name}_backup"
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source = f"ta_{self.index_name}"
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destination = f"ta_{self.index_name}_backup"
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elif method == "restore":
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source = f"ta_{index_name}_backup"
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destination = f"ta_{index_name}"
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source = f"ta_{self.index_name}_backup"
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destination = f"ta_{self.index_name}"
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query = {"source": {"index": source}, "dest": {"index": destination}}
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data = json.dumps(query)
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url = self.ES_URL + "/_reindex?refresh=true"
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response = requests.post(
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url=url, data=data, headers=self.HEADERS, auth=self.ES_AUTH
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)
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if not response.ok:
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print(response.text)
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data = {"source": {"index": source}, "dest": {"index": destination}}
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_, _ = ElasticWrap("_reindex?refresh=true").post(data=data)
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def delete_index(self, backup=True):
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"""delete index passed as argument"""
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path = f"ta_{self.index_name}"
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if backup:
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url = f"{self.ES_URL}/ta_{self.index_name}_backup"
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else:
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url = f"{self.ES_URL}/ta_{self.index_name}"
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response = requests.delete(url, auth=self.ES_AUTH)
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if not response.ok:
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print(response.text)
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path = path + "_backup"
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_, _ = ElasticWrap(path).delete()
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def create_blank(self):
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"""apply new mapping and settings for blank new index"""
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expected_map = self.expected_map
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expected_set = self.expected_set
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# stich payload
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payload = {}
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if expected_set:
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payload.update({"settings": expected_set})
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if expected_map:
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payload.update({"mappings": {"properties": expected_map}})
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# create
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url = f"{self.ES_URL}/ta_{self.index_name}"
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data = json.dumps(payload)
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response = requests.put(
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url=url, data=data, headers=self.HEADERS, auth=self.ES_AUTH
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)
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if not response.ok:
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print(response.text)
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data = {}
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if self.expected_set:
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data.update({"settings": self.expected_set})
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if self.expected_map:
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data.update({"mappings": {"properties": self.expected_map}})
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_, _ = ElasticWrap(f"ta_{self.index_name}").put(data)
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class ElasticBackup:
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@ -174,52 +141,21 @@ class ElasticBackup:
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def __init__(self, index_config, reason):
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self.config = AppConfig().config
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self.cache_dir = self.config["application"]["cache_dir"]
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self.index_config = index_config
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self.reason = reason
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self.timestamp = datetime.now().strftime("%Y%m%d")
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self.backup_files = []
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def get_all_documents(self, index_name):
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@staticmethod
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def get_all_documents(index_name):
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"""export all documents of a single index"""
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headers = {"Content-type": "application/json"}
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es_url = self.config["application"]["es_url"]
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es_auth = self.config["application"]["es_auth"]
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# get PIT ID
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url = f"{es_url}/ta_{index_name}/_pit?keep_alive=1m"
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response = requests.post(url, auth=es_auth)
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json_data = json.loads(response.text)
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pit_id = json_data["id"]
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# build query
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data = {
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"query": {"match_all": {}},
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"size": 100,
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"pit": {"id": pit_id, "keep_alive": "1m"},
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"sort": [{"_id": {"order": "asc"}}],
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"sort": [{"_doc": {"order": "desc"}}],
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}
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query_str = json.dumps(data)
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url = es_url + "/_search"
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# loop until nothing left
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all_results = []
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while True:
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response = requests.get(
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url, data=query_str, headers=headers, auth=es_auth
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)
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json_data = json.loads(response.text)
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all_hits = json_data["hits"]["hits"]
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if all_hits:
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for hit in all_hits:
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search_after = hit["sort"]
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all_results.append(hit)
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# update search_after with last hit data
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data["search_after"] = search_after
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query_str = json.dumps(data)
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else:
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break
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# clean up PIT
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query_str = json.dumps({"id": pit_id})
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requests.delete(
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es_url + "/_pit", data=query_str, headers=headers, auth=es_auth
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)
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paginate = IndexPaginate(f"ta_{index_name}", data, keep_source=True)
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all_results = paginate.get_results()
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return all_results
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@ -244,9 +180,8 @@ class ElasticBackup:
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def write_es_json(self, file_content, index_name):
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"""write nd-json file for es _bulk API to disk"""
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cache_dir = self.config["application"]["cache_dir"]
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file_name = f"es_{index_name}-{self.timestamp}.json"
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file_path = os.path.join(cache_dir, "backup", file_name)
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file_path = os.path.join(self.cache_dir, "backup", file_name)
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with open(file_path, "w", encoding="utf-8") as f:
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f.write(file_content)
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@ -254,9 +189,8 @@ class ElasticBackup:
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def write_ta_json(self, all_results, index_name):
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"""write generic json file to disk"""
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cache_dir = self.config["application"]["cache_dir"]
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file_name = f"ta_{index_name}-{self.timestamp}.json"
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file_path = os.path.join(cache_dir, "backup", file_name)
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file_path = os.path.join(self.cache_dir, "backup", file_name)
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to_write = [i["_source"] for i in all_results]
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file_content = json.dumps(to_write)
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with open(file_path, "w", encoding="utf-8") as f:
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@ -266,9 +200,8 @@ class ElasticBackup:
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def zip_it(self):
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"""pack it up into single zip file"""
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cache_dir = self.config["application"]["cache_dir"]
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file_name = f"ta_backup-{self.timestamp}-{self.reason}.zip"
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backup_folder = os.path.join(cache_dir, "backup")
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backup_folder = os.path.join(self.cache_dir, "backup")
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backup_file = os.path.join(backup_folder, file_name)
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with zipfile.ZipFile(
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@ -283,29 +216,18 @@ class ElasticBackup:
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def post_bulk_restore(self, file_name):
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"""send bulk to es"""
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cache_dir = self.config["application"]["cache_dir"]
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es_url = self.config["application"]["es_url"]
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es_auth = self.config["application"]["es_auth"]
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headers = {"Content-type": "application/x-ndjson"}
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file_path = os.path.join(cache_dir, file_name)
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file_path = os.path.join(self.cache_dir, file_name)
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with open(file_path, "r", encoding="utf-8") as f:
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query_str = f.read()
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data = f.read()
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if not query_str.strip():
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if not data.strip():
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return
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url = es_url + "/_bulk"
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request = requests.post(
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url, data=query_str, headers=headers, auth=es_auth
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)
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if not request.ok:
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print(request.text)
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_, _ = ElasticWrap("_bulk").post(data=data, ndjson=True)
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def get_all_backup_files(self):
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"""build all available backup files for view"""
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cache_dir = self.config["application"]["cache_dir"]
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backup_dir = os.path.join(cache_dir, "backup")
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backup_dir = os.path.join(self.cache_dir, "backup")
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backup_files = os.listdir(backup_dir)
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all_backup_files = ignore_filelist(backup_files)
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all_available_backups = [
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@ -336,8 +258,7 @@ class ElasticBackup:
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def unpack_zip_backup(self, filename):
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"""extract backup zip and return filelist"""
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cache_dir = self.config["application"]["cache_dir"]
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backup_dir = os.path.join(cache_dir, "backup")
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backup_dir = os.path.join(self.cache_dir, "backup")
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file_path = os.path.join(backup_dir, filename)
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with zipfile.ZipFile(file_path, "r") as z:
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@ -348,9 +269,7 @@ class ElasticBackup:
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def restore_json_files(self, zip_content):
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"""go through the unpacked files and restore"""
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cache_dir = self.config["application"]["cache_dir"]
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backup_dir = os.path.join(cache_dir, "backup")
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backup_dir = os.path.join(self.cache_dir, "backup")
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for json_f in zip_content:
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@ -364,14 +283,13 @@ class ElasticBackup:
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self.post_bulk_restore(file_name)
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os.remove(file_name)
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def index_exists(self, index_name):
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@staticmethod
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def index_exists(index_name):
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"""check if index already exists to skip"""
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es_url = self.config["application"]["es_url"]
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es_auth = self.config["application"]["es_auth"]
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url = f"{es_url}/ta_{index_name}"
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response = requests.get(url, auth=es_auth)
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_, status_code = ElasticWrap(f"ta_{index_name}").get()
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exists = status_code == 200
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return response.ok
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return exists
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def rotate_backup(self):
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"""delete old backups if needed"""
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@ -386,8 +304,7 @@ class ElasticBackup:
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print("no backup files to rotate")
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return
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cache_dir = self.config["application"]["cache_dir"]
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backup_dir = os.path.join(cache_dir, "backup")
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backup_dir = os.path.join(self.cache_dir, "backup")
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all_to_delete = auto[rotate:]
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for to_delete in all_to_delete:
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