# 背景
* 每日线上会收集回来很多的崩溃信息，但我们往往关心的是有多少类，及该类崩溃信息对应的系统、硬件分布、崩溃pv、uv等情况
* 版本间崩溃对比，top20问题是否有变动，历史版本崩溃是否被修复，线上版本是否有新增崩溃
# 分析崩溃
### 第一步、符号化崩溃日志
### 第二步、获取单个崩溃日志的各项信息
* 获取崩溃线程，然后对线程信息做处理得出崩溃唯一标识
```
# 这块暂时不做容错，默认crash均是完整
lastExceptionBacktrace = re.search(r"Last Exception Backtrace:(.+?)Thread ", c_content, re.S)
if lastExceptionBacktrace:
crash_info["crash_thread_detial"] = lastExceptionBacktrace.group(1).strip()
else:
try:
crash_info["crash_thread_detial"] = re.search(r'Crashed:(.+?)Thread ',c_content ,re.S).group(1).strip()
except:
print "no Crashed word:",crashPath
return None
```
* 获取系统版本
`crash_info["os_version"] = re.search(r"OS Version:(.+)", c_content).group(1).strip()`
* 获取设备硬件信息
- `crash_info["hardware"] = re.search(r"Hardware Model:(.+)", c_content).group(1).strip()`
- 一般需要做一个映射关系
```
INTERNAL_NAME = {
# iPhone 映射关系
"iPhone1,1": "iPhone",
"iPhone1,2": "iPhone 3G",
"iPhone2,1": "iPhone 3GS",
"iPhone3,1": "iPhone 4",
"iPhone3,2": "iPhone 4",
"iPhone3,3": "iPhone 4",
"iPhone4,1": "iPhone 4S",
"iPhone5,1": "iPhone 5",
"iPhone5,2": "iPhone 5",
"iPhone5,3": "iPhone 5c",
"iPhone5,4": "iPhone 5c",
"iPhone6,1": "iPhone 5s",
"iPhone6,2": "iPhone 5s",
"iPhone7,2": "iPhone 6",
"iPhone7,1": "iPhone 6 Plus",
"iPhone8,1": "iPhone 6s",
"iPhone8,2": "iPhone 6s Plus",
# iPad 映射关系
"iPad1,1": "iPad",
"iPad2,1": "iPad 2",
"iPad2,2": "iPad 2",
"iPad2,3": "iPad 2",
"iPad2,4": "iPad 2",
"iPad3,1": "iPad 3",
"iPad3,2": "iPad 3",
"iPad3,3": "iPad 3",
"iPad3,4": "iPad 4",
"iPad3,5": "iPad 4",
"iPad3,6": "iPad 4",
"iPad4,1": "iPad Air",
"iPad4,2": "iPad Air",
"iPad4,3": "iPad Air",
"iPad5,3": "iPad Air 2",
"iPad5,4": "iPad Air 2",
"iPad6,7": "iPad Pro",
"iPad6,8": "iPad Pro"
}
```
* 获取app版本
`crash_info["app_version"] = re.search(r"Version:(.+)", c_content).group(1).strip()`
### 第三步、根据上述获取到的信息做聚类即可