image_service_register.py
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# coding=utf-8
#author: 4N
#createtime: 2021/7/19
#email: nheweijun@sina.com
from ..models import db,Service,ImageService,Image,ServiceFunction
from app.util.component.ApiTemplate import ApiTemplate
import uuid
import os
import json
import datetime
from .image_wms import Api as RealApi
import cv2
import configure
class Api(ApiTemplate):
api_name = "注册影像服务"
def para_check(self):
if not self.para.get("function_types"):
raise Exception("缺乏影像服务类型！")
if self.para.get("function_types").__contains__("WMTS") and (not self.para.get("scheme_guid")):
raise Exception("选择WMTS功能，但是缺乏切片方案！")
def process(self):
# 返回结果
res = {}
try:
guids = self.para.get("guids").split(",")
name = self.para.get("name")
functions = self.para.get("functions")
image_service_guid = uuid.uuid1().__str__()
service_guid = uuid.uuid1().__str__()
service_function_guid = uuid.uuid1().__str__()
this_time = datetime.datetime.now()
image_service = ImageService(guid=image_service_guid,
name=name,
create_time=this_time,
scheme_guid=self.para.get("scheme_guid"),
crs = self.para.get("crs"),
service_guid=service_guid)
image_service_exetent = []
for g in guids:
image = Image.query.filter_by(guid=g).one_or_none()
if image:
image_extent = json.loads(image.extent)
if not image_service_exetent:
image_service_exetent = image_extent
else:
image_service_exetent[0] = min(image_extent[0],image_service_exetent[0])
image_service_exetent[1] = min(image_extent[1], image_service_exetent[1])
image_service_exetent[2] = max(image_extent[2], image_service_exetent[2])
image_service_exetent[3] = max(image_extent[3], image_service_exetent[3])
image_service.images.append(image)
image_service.extent = json.dumps(image_service_exetent)
service = Service(
guid = service_guid,
name = name,
title = self.para.get("title"),
state = 1,
create_time = this_time,
update_time = this_time,
description = self.para.get("description"),
#node = Column(Integer),
type = self.para.get("type"),
catalog_guid = self.para.get("catalog_guid")
)
for type in functions.split(","):
service_function = ServiceFunction(guid=service_function_guid,
service_guid=service_guid,
type=type)
db.session.add(service_function)
db.session.add(service)
db.session.add(image_service)
#获得overview
overview_file = self.get_overview(service,image_service)
service.overview="http://{}/API/Service/Overview/{}".format(
configure.deploy_ip_host,overview_file)
db.session.commit()
res["data"] = service_guid
res["result"] = True
except Exception as e:
db.session.rollback()
raise e
return res
def get_overview(self,service,image_service):
api = RealApi(service.name)
query_extent = json.loads(image_service.extent)
if query_extent[2] - query_extent[0] > query_extent[3] - query_extent[1]:
offset = ((query_extent[2] - query_extent[0]) - (query_extent[3] - query_extent[1])) / 2.0
query_extent = [query_extent[0], query_extent[1] - offset, query_extent[2], query_extent[3] + offset]
else:
offset = ((query_extent[3] - query_extent[1]) - (query_extent[2] - query_extent[0])) / 2.0
query_extent = [query_extent[0] - offset, query_extent[1], query_extent[2] + offset, query_extent[3]]
bbox = ",".join([str(x) for x in query_extent])
api.para = {"service_name":service.name,"bbox":bbox,"overview":1,"width":512,"height":512}
res = api.process()
dir_path = os.path.join(os.path.dirname(os.path.dirname(os.path.realpath(__file__))), "overview")
gid = uuid.uuid1().__str__()
store_file = os.path.join(dir_path, "{}.jpg".format(gid))
cv2.imwrite(store_file, res, [cv2.IMWRITE_JPEG_QUALITY, 30])
return "{}.jpg".format(gid)
api_doc = {
"tags": ["影像接口"],
"parameters": [
# 通用参数
{"name": "name",
"in": "formData",
"type": "string",
"required": "true",
"description": "[地图服务，切片服务，影像服务]"},
{"name": "title",
"in": "formData",
"type": "string",
"description": "[地图服务，切片服务，影像服务]"},
{"name": "description",
"in": "formData",
"type": "string",
"description": "[地图服务，切片服务，影像服务]"},
{"name": "type",
"in": "formData",
"type": "string",
"enum": ["地图服务","切片服务","影像服务"],
"required": "true",
"description": "[地图服务，切片服务，影像服务]"},
{"name": "catalog_guid",
"in": "formData",
"type": "string",
"description": "[地图服务，切片服务，影像服务]"},
# 影像参数
{"name": "guids",
"in": "formData",
"type": "string",
"description": "[影像服务]影像guids，以英文逗号相隔"},
{"name": "scheme_guid",
"in": "formData",
"type": "string",
"description": "[影像服务]切片方案"},
{"name": "functions",
"in": "formData",
"type": "string",
"description": "[影像服务]功能类型，以逗号相隔，可选WMTS，WMS"},
],
"responses": {
200: {
"schema": {
"properties": {
}
}
}
}
}