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Ethereum on Mac OS

These are some installation and update tips for Ethereum tools on Mac OS.

Geth

First and foremost is Geth, the Go ETHereum node. The download site is

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# Presents hcidbdump -l output one entry per line.
#
# Usage: hcidbdump -e -l -O i | awk -f errdbtimes.awk
#
# This is useful because the raw output spreads each entry across
# several lines.  This makes the output difficult to script and
# overly verbose.  Here is a sample
#
#------- Begin Sample Raw Output -----------------
#

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console.log <- function(fmt,...) {
   print(paste(format(Sys.time(), "%H:%M:%S"), sprintf(fmt, ...)))
}

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This Gist is a small collection of regular expressions used to parse DataPower latency log entries. It only works for basic latency entries, not extended latency entries. Also, it may only work for MPGS; this hasn't been tested for WSPs.

reg = re.compile(r'\w\w\w (\w\w\w \d\d \d\d\d\d \d\d:\d\d:\d\d) \[0x80e00073\]\[latency\]\[info\] \w+\(([^)]+)\): tid\((\d+)\).+ Latency:\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+\[(https?://[^/]+)([^?]+)?(\?.+)?\]')

Here is a description by groupings.

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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:dp="http://www.datapower.com/extensions"
   xmlns:sp="urn:oasis:names:tc:SAML:2.0:protocol"
   xmlns:sa="urn:oasis:names:tc:SAML:2.0:assertion"
   xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata"
   exclude-result-prefixes="dp"
   extension-element-prefixes="dp"
   version="1.0">

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The code sample below demonstrates how to implement a dynamic routing scheme in DataPower. It uses the inbound URI as the routing criterion. The routing logic is contained in the XSLT named computeRoute.xsl. The XSLT reads the route configuration from an XML file named routes.xsl.

All matches are logged to a log category named route-<domain> where represents the name of the application domain. Defining a log category with this name will enable you to fine tune the destination

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The code sample below demonstrates how to obtain user and group information for an authenticated user from within WebSphere Application Server. It uses the WAS security API as documented in the Programming API section of the WAS 8.5.5 Knowledge Center (see packages starting with com.ibm.websphere.security.auth and com.ibm.websphere.security.cred.)

For more details on the WAS authentication model, please see Advanced WAS Authentication on IBM developerWorks. Yes, it's old; but most of it still applies.